Journal articles: 'H-bridge inverter circuit'

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Giyantara, Andhika, Risky Susanto Tjiang, and Subchan Subchan. "Desain Inverter Satu Fasa 12V DC ke 220V AC Menggunakan Rangkaian H-Bridge MOSFET." SPECTA Journal of Technology 3, no. 1 (December 3, 2019): 1–12. http://dx.doi.org/10.35718/specta.v3i1.112.

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Inverter is an electronic circuit that convert electric voltage with direct current (DC) to alternating current (AC). One of the commonly used inverter configuration is H-Bridge circuit. Inverter with H-Bridge circuit does not need voltage-balanced diode or capacitor to operate and can be cascaded to obtain multilevel output voltage. H-Bridge circuit works by adjusting the combination of switches that were enabled. One of the commonly used switches is Metal Oxide Semiconductor Field Effect Transistor (MOSFET). The advantages of MOSFET as switching components are its fast switching speed and it did not cause current tail. Therefore, the writing of this paper aims to design a 12V DC to 220V AC 50Hz single-phase inverter with H-Bridge MOSFET circuit. The design stage begins with determining the specifications of the inverter, creating a block diagram of the inverter, determining the required components, and calculating the required parameters of the inverter. The designed inverter is simulated using Proteus 8.4 software. Simulation results are in accordance with the desired specification.

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Devika, M., M. Sundaraperumal, and M. Valan Rajkumar. "Simulation of Quasi Cascaded H-Bridge Five-Level Boost Inverter." International Journal Of Engineering And Computer Science 7, no. 03 (March 16, 2018): 23727–36. http://dx.doi.org/10.18535/ijecs/v7i3.13.

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Multilevel inverters have become more attractive for researchers due to low total harmonic distortion in the output voltage and low electromagnetic interference. This paper proposes a novel single-stage quasi-cascaded H-bridge five-level boost inverter. The proposed quasi cascaded h-bridge five-level boost inverter has the advantages over the cascaded H-bridge quasi-Z-source inverter in cutting down passive components. Consequently, size, cost, and weight of the proposed inverter are reduced. A capacitor with low voltage rating is added to the proposed topology to remove an offset voltage of the output AC voltage when the input voltages of two modules are unbalanced. Besides, sinusoidal pulse width modulation techniques used here. PID controller is used to control the capacitor voltage of each module. This paper presents circuit analysis, the operating principles, and simulation results of the proposed system

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Zhang, Guo Ju, Rong Cai, Lisa Qi, Yao Chen, Rong Rong Yu, and Jiu Ping Pan. "Application of Cascade H-Bridge Inverter in Super-Capacitor Energy Storage System." Advanced Materials Research 608-609 (December 2012): 1054–57. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1054.

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This paper presents application of a CHB inverter based SESS. CHB inverter is characterized by cascade connection of multiple single-phase H-bridge (or full bridge) inverter cells. CHB inverter can make SESS flexible in circuit design, reduced voltage steps, and lower EMI. This paper presents circuit architecture design, modeling of CHB inverter based SESS, and control strategy focusing on power and energy balance control among Sub modules (SMs). The simulation results verify that the CHB inverter based SESS have a good performance in both fast power exchange and SM energy balance.

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Ramlan, N. H., N. A. Azli, and N. F. A. A. Hafidz. "Performance of Interconnection and Damping Assignment Passivity-Based Controller on Inverter Circuits." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 1 (March 1, 2017): 69. http://dx.doi.org/10.11591/ijpeds.v8.i1.pp69-80.

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This paper presents an extension work on the application of interconnection and damping assignment passivity-based controller (IDA-PBC) from the conventional H-bridge inverter to a 5-level Cascaded H-bridge Multilevel Inverter (CHMI). With the controller, the inductor current and the voltage capacitor track the desired reference of the inverter to ensure that the output voltage maintains its regulation while the Total Harmonic Distortion (THD) is kept at low levels with fast transient response. It is designed based on the Port-Control Hamiltonian theory exploiting the dissipation properties of the averaged model of inverter circuits. The results obtained have proven that the IDA-PBC previously developed for the H-bridge inverter can be easily extended and applied to the CHMI circuit. The simulation results showed that the IDA-PBC is able to maintain the output voltage regulation in both circuits in the case of no-load to full-load condition, load uncertainty, and structural uncertainty while maintaining THD of less than 5%. However, in all cases, CHMI has shown better performance in terms of THD percentage and transient response compared to the H-bridge inverter, which are 290 µs and 150 µs respectively.

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Matsushita, Yoshinori, Toshihiko Noguchi, Kazuki Shimizu, Noritaka Taguchi, and Makoto Ishii. "Control of Dual-Output DC/DC Converters Using Duty Cycle and Frequency." World Electric Vehicle Journal 11, no. 4 (November 13, 2020): 72. http://dx.doi.org/10.3390/wevj11040072.

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As part of the integration process of the auxiliary power systems of electric vehicles, plug-in hybrid vehicles and fuel cell vehicles, this study proposes a method to control two different voltage types using two control factors of the rectangular alternating waveforms contained in DC/DC converters, namely the duty cycle and frequency. A prototype circuit consisting of an H-bridge inverter, a transformer, two series resonant filters and two diode bridge circuits was constructed. The H-bridge inverter was connected to the primary side of the transformer and the diode bridge rectifier circuit was connected to the secondary side in parallel. Series resonant filters were inserted between one of the diode bridge circuits and the transformer. Thereafter, the proposed control method was applied to the transformer voltage of the prototype circuit. Although the circuit operation became complex owing to the circulating current flowing between the ground (GND) of the two output circuits, it exhibited ideal static and dynamic characteristics, thereby confirming the possibility of controlling two voltages with the duty cycle and frequency control factors. The results of the efficiency evaluation and loss analysis demonstrated a minimum efficiency of 68.3% and a maximum efficiency of 88.9%. As the output power of the circuit containing the resonant filters increased, the current peak value increased and the circuit became less efficient.

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Meraj, Sheikh Tanzim, Nor Zaihar Yahaya, Kamrul Hasan, Molla Shahadat Hossain Lipu, Ammar Masaoud, Sawal Hamid Md Ali, Aini Hussain, Muhammad Murtadha Othman, and Farhan Mumtaz. "Three-Phase Six-Level Multilevel Voltage Source Inverter: Modeling and Experimental Validation." Micromachines 12, no. 9 (September 21, 2021): 1133. http://dx.doi.org/10.3390/mi12091133.

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This research proposes a three-phase six-level multilevel inverter depending on twelve-switch three-phase Bridge and multilevel DC-link. The proposed architecture increases the number of voltage levels with less power components than conventional inverters such as the flying capacitor, cascaded H-bridge, diode-clamped and other recently established multilevel inverter topologies. The multilevel DC-link circuit is constructed by connecting three distinct DC voltage supplies, such as single DC supply, half-bridge and full-bridge cells. The purpose of both full-bridge and half-bridge cells is to provide a variable DC voltage with a common voltage step to the three-phase bridge’s mid-point. A vector modulation technique is also employed to achieve the desired output voltage waveforms. The proposed inverter can operate as a six-level or two-level inverter, depending on the magnitude of the modulation indexes. To guarantee the feasibility of the proposed configuration, the proposed inverter’s prototype is developed, and the experimental results are provided. The proposed inverter showed good performance with high efficiency of 97.59% following the IEEE 1547 standard. The current harmonics of the proposed inverter was also minimized to only 5.8%.

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Aboadla, Ezzidin Hassan, Sheroz Khan, Kushsairy Abdul Kadir, Zulkhairi Md Yusof, Mohamed Hadi Habaebi, Shabana Habib, Muhammad Islam, Mohammad Kamrul Hasan, and Eklas Hossain. "Suppressing Voltage Spikes of MOSFET in H-Bridge Inverter Circuit." Electronics 10, no. 4 (February 5, 2021): 390. http://dx.doi.org/10.3390/electronics10040390.

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Power electronics devices are made from semiconductor switches such as thyristors, MOSFETs, and diodes, along with passive elements of inductors, capacitors, and resistors, and integrated circuits. They are heavily used in power processing for applications in computing, communication, medical electronics, appliance control, and as converters in high power DC and AC transmission in what is now called harmonized AC/DC networks. A converter’s operation is described as a periodic sequencing of different modes of operation corresponding to different topologies interfaced to filters made of passive elements. The performance of converters has improved considerably using high switching frequency, which leads to a significant improvement in a power converter’s performance. However, the high dv/dt through a fast-switching transient of the MOSFET is associated with parasitic components generating oscillations and voltage spikes having adverse effects on the operation of complementary switches, thereby affecting the safe operation of the power devices. In this paper, the MOSFET gate-driver circuit performance is improved to suppress the H-Bridge inverter’s voltage spikes. The proposed technique is a simple improvement to the gate driver based on the IR2112 driver (IC) by adding a capacitor to attenuate the effect of parasitic components and the freewheeling current, suppressing the negative voltage spikes. This paper’s main contribution is to improve the gate driver circuit’s capability for suppressing the voltage spikes in the H-Bridge inverter. The improved gate driver circuit is validated experimentally and is compared with the conventional gate driver. The experimental results show that the proposed technique can effectively suppress the MOSFET’s voltage spikes and oscillations.

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Tackie, Samuel Nii, and Ebrahim Babaei. "Modified Topology for Three-Phase Multilevel Inverters Based on a Developed H-Bridge Inverter." Electronics 9, no. 11 (November 5, 2020): 1848. http://dx.doi.org/10.3390/electronics9111848.

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This paper proposes a modified three-phase inverter from the developed H-bridge structure having multilevel functionality. The proposed topology can generate 7-levels of phase voltages and 13-levels of line voltages. Simple control methods such as fundamental frequency control method can be applied to the proposed topology. By adding three single-phase transformers, galvanic isolation is created for use in three-phase Dynamic Voltage Restorer systems. The proposed three-phase inverter utilizes less number of components; dc sources, semiconductor switches and driver circuits. Lower rated power switches with reduced blocking voltages are also used. These attributes make the proposed topology less complex in-terms of architecture and control. Comprehensive analysis of the proposed three-phase multilevel inverter and other presented topologies are investigated with respect to levels of output voltage, driver circuit quantity, dc voltage count, total component quantity and standing voltage. Details of the appropriate control technique employed is explained. Finally, practicability of the proposed inverter is validated by simulation using EMTDC/PSCAD software and experimental prototype.

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Jiang, Wei, Fang Yuan, and Wen Long Hu. "Study of Nonlinear Phenomena and Chaos Control in Single-Phase SPWM H Bridge Inverter." Applied Mechanics and Materials 39 (November 2010): 1–6. http://dx.doi.org/10.4028/www.scientific.net/amm.39.1.

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This paper introduces the work principle of single-phase SPWM H bridge inverter and builds up the mathematics model according to KVL and KCL. It can easy to observe nonlinear phenomena in the circuit after simulation the model. According to the characteristics of single-phase SPWM H bridge inverter, both resonant parametric perturbation and TDFC are good ways to eliminate chaotic behavior of inverter and made the system changing from chaos to stable period. It has a very important practical value and theoretical significance for stability design of single-phase SPWM H bridge inverter.

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Chulan, Megat Azahari, Mohd Junaidi Abdul Aziz, Abdul Halim Mohammed Yatim, and Mohd Zaki Daud. "Seven Levels Symmetric H-bridge Multilevel Inverter with Less Number of Switching Devices." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 1 (March 1, 2017): 109. http://dx.doi.org/10.11591/ijpeds.v8.i1.pp109-116.

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This paper proposes a new topology of a cascaded multilevel inverter that utilises less number of switches than the conventional topology. The proposed topology maintains the performance of conventional 7-levels output multilevel inverter while reducing the loss of power, installation area, converter size as well as development cost. The circuit development consists of six switches and one diode. With less number of switching devices in the circuit, there will be a reduction in the gate driver circuits and also in effect fewer switches required for specific intervals of time. Simulation works have been conducted to validate the proposed MLI topology. It is envisaged that the proposed topology can be applied for the system that requires high efficiency and a low electromagnetic interference.

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R. Balamurugan, C., and K. Vijayalakshmi. "Comparative Analysis of Various Z-source Based Five Level Cascaded H-bridge Multilevel Inverter." Bulletin of Electrical Engineering and Informatics 7, no. 1 (March 1, 2018): 1–14. http://dx.doi.org/10.11591/eei.v7i1.656.

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Z-source based multilevel inverters are the recent topologies as they have boosting ability and near sinusoidal output waveforms. This paper proposes different inverter topologies such as Z-source multilevel inverter and quasi Z-source multilevel inverter. This paper also deals with switched inductor and improved switched inductor topologies with quasi Z-network. The proposed switched inductor system reduces the voltage stresses caused by capacitors, power devices and diodes. In addition to multilevel inverter advantages, the proposed configuration employs Z-source inverter advantages. The Z-source inverter as compared to the traditional inverter is less costly, less complex, more efficient and more reliable. The performance of the proposed configurations is analysed by varying passive elements in impedance network and is simulated in MATLAB/SIMULINK. Phase disposition (PD) pulse width modulation (PWM) technique is applied on the proposed configurations and performance parameters are measured by the fast Fourier transform FFT analysis. The object of this paper is to develop an inverter which is used for variable speed drives with increase in output voltage by eliminating transformer and filter circuit. The performance is checked with standared parameter of the inverter.

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Truong, Hoang, Chung Mai, Cao Nguyen, and Phuong Vu. "Modified Space Vector Modulation for Cascaded H-Bridge Multilevel Inverter with Open-Circuit Power Cells." Journal of Electrical and Computer Engineering 2021 (March 20, 2021): 1–14. http://dx.doi.org/10.1155/2021/6643589.

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In this research, a new space vector modulation control algorithm is proposed to increase the reliability of the cascaded H-bridge multilevel inverters in case of faulty situations, where one or several power cells do not function. Methods to detect faults ensure finding open-circuit module exactly, which is fast and easy to program. By giving a detailed analysis of the impact of the faulty power cells, optimal redundant level states are chosen such that highest possible output voltage can be achieved, while the balance of the three-phase line-to-line voltage is maintained and common-mode voltage is reduced. The proposed algorithm is generalized so that it can be applied to H-bridge inverters of any level. The validity of the method is verified by numerical simulations and experiment results with an 11-level cascaded H-bridge inverter.

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ASAHARA, HIROYUKI, and TAKUJI KOUSAKA. "BIFURCATION ANALYSIS IN A PWM CURRENT-CONTROLLED H-BRIDGE INVERTER." International Journal of Bifurcation and Chaos 21, no. 03 (March 2011): 985–96. http://dx.doi.org/10.1142/s0218127411028817.

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This paper introduces the complete bifurcation analysis in a PWM current-controlled H-Bridge inverter in a wide parameter space. First, we briefly explain the behavior of the waveform in the circuit in terms of the switched dynamical system. Then, the consecutive waveform during the duration of the clock interval is exactly discretized, and the return map is defined for the rigorous analysis. Using the map, we derive the one- and two-dimensional bifurcation diagrams, and discuss the specific property of each bifurcation phenomena in the circuit.

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Suroso, Suroso, Daru Tri Nugroho, Abdullah Nur Azis, and Toshihiko Noguchi. "Simplified five-level voltage source inverter with level-phase-shifted carriers based modulation technique." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 2 (February 1, 2019): 461. http://dx.doi.org/10.11591/ijeecs.v13.i2.pp461-468.

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A simplified circuit topology of the five-level pulse width modulation (PWM) inverter for DC-AC power conversion with no-isolated DC voltage sources and reduced switching device number is presented in this paper. The inverter circuit is based on the three-level H-bridge inverter configuration. The developed five-level inverter needs only five controlled power switches and four isolated gate drive circuits. Furthermore, the proposed topology does not require bidirectional power semiconductor controlled switches, hence a conventional discrete power MOSFETs or IGBTs can be used to build the inverter circuits. To obtain a better quality output voltage waveform, the level-phase-shifted carriers based sinusoidal pulse width modulation control was applied to produce a five-level PWM voltage waveform. The proposed inverter circuit was examined by using computer simulation with Power PSIM software. The basic principle operation of the inverter circuit was verified experimentally in laboratory using two non-isolated DC voltage sources as the inputs of the inverter’s prototype circuit. Some analysis of inverter’s output waveforms are provided and discussed.

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A., Arikesh, and A. K. Parvathy. "Modular multilevel inverter for renewable energy applications." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (February 1, 2020): 1. http://dx.doi.org/10.11591/ijece.v10i1.pp1-14.

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This paper proposes a Multilevel Inverter (MLI) which focuses on two objective , minimal voltage sources and lesser switching component. The proposed Asymmetrical Cascaded Multilevel Inverter (ACMLI) is able to achieve the objective by selectively opting the voltage level of DC sources chosen and implementing the mathematical operation of addition and subtraction on the DC sources. This system also utilizes multiple carrier sinusoidal pulse width modulation technique (MCS-PWM) for operating the switches. It is found that the number of switches required for proposed modular bridge ACMLI and modified H bridge ACMLI was lesser than the traditional Cascaded H bridge Multilevel Inverter (CHB-MLI). It is also evident that the number of DC voltage sources and filter required for smoothing the output waveform is reduced compared to the traditional MLI. The Total Harmonic Distortion (THD) for the proposed circuit was simulated and analyzed in MATLAB Simulink environment and the results are found to be very less and satisfactory. The proposed circuit can find its application in integrating Renewable Energy Sources (RES) to the utility grid, Electrical Vehicle (EV) , harmonic reduction and so on. The simulation results of the proposed circuits are tabulated and compared with the traditional cascaded MLI.

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Oskuee, Mohammad Reza Jannati, Sahar Khalilnasab, Sajad Najafi Ravadanegh, and Gevork B. Gharehpetian. "Reduction of Circuit Devices in Developed Symmetrical/Asymmetrical Multilevel Converters." Journal of Circuits, Systems and Computers 25, no. 04 (February 2, 2016): 1650020. http://dx.doi.org/10.1142/s0218126616500201.

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In this paper, a developed configuration for multilevel voltage source inverters (MVSIs) is proposed. The proposed topology can be used as symmetric and asymmetric inverters. In asymmetric mode, DC source magnitudes are defined in a way that the number of output levels gets more than the case when the symmetrical DC sources are applied. In this regard, to calculate the required magnitudes of DC voltage sources several different solutions are proposed. In multilevel inverters, the overall costs, circuit size and installation area, complexity of control scheme and reliability are directly dependent on the number of circuit devices needed. The provided comparison study among suggested inverter in all defined solutions, cascaded H-bridge (CHB) and recently proposed converters, validates that the proposed inverter uses reduced number of circuit devices. The given simulation results confirm the feasibility of the proposed modular structure. Also, to approve the practicability of the proposed inverter, a prototype of the proposed topology has been implemented. Finally, simulation and experimental results are compared with each other and the provided comparison shows that the obtained results are in good agreements.

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Rahimi A. Subki, A. Shamsul, Mohd Zaidi Mohd Tumari, Wan Norhisyam Abd Rashid, Aiman Zakwan Jidin, and Ahmad Nizammuddin Muhammad Mustafa. "Hardware implementation of single phase three-level cascaded h-bridge multilevel inverter using sinusoidal pulse width modulation." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 2 (June 1, 2019): 625. http://dx.doi.org/10.11591/ijpeds.v10.i2.pp625-635.

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In this paper a hardware implementation of single-phase cascaded H-bridge three level multilevel inverter (MLI) using sinusoidal pulse width modulation (SPWM) is presented. There are a few interesting features of using this configuration, where less component count, less switching losses, and improved output voltage/current waveform. The output of power inverter consists of three form, that is, square wave, modified square wave and pure sine wave. The pure sine wave and modified square wave are more expensive than square wave. The focus paper is to generate a PWM signal which control the switching of MOSFET power semiconductor. The sine wave can be created by using the concept of Schmitt-Trigger oscillator and low-pass filter topology followed by half of the waveform will be eliminated by using the circuit of precision half-wave rectifier. Waveform was inverted with 180º by circuit of inverting op-amp amplifier in order to compare saw-tooth waveform. Two of PWM signal were produced by circuit of PWM and used digital inverter to invert the two PWM signal before this PWM signal will be passed to 2 MOSFET driver and a 3-level output waveform with 45 Hz was produced. As a conclusion, a 3-level output waveform is produced with output voltage and current recorded at 22.5 Vrms and 4.5 Arms. The value of measured resistance is 0.015 Ω that cause voltage drop around 0.043 V. Based on the result obtained, the power for designed inverter is around 100W and efficiency recorded at 75%.

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Nagaraju, Motaparthi, and Malligunta Kiran Kumar. "Analysis of series/parallel multilevel inverter with symmetrical and asymmetrical configurations." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 1 (March 1, 2019): 300. http://dx.doi.org/10.11591/ijpeds.v10.i1.pp300-306.

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Usage of high power and medium voltage applications in domestic and industrial purpose has been increased in the recent years. Also, the penetration of renewable energy sources is increasing rapidly. To make use the renewable energy sources there is a need of using inverters. The basic inverter is conventional two level inverter which produces the square wave output voltage. The major drawback of conventional inverter is it contains more harmonics. Therefore, multilevel inverters have been introduced with staircase output voltage waveform. Lot of multilevel inverter topologies have been developed and cascaded H bridge type is the more frequently used. But, it requires more number of switches for higher output voltage level. In this paper, a novel 7 level asymmetrical multilevel inverter topology is proposed with less number of switches. This proposed topology is compared with already existing topology. The simulation of circuit and result analysis of the circuit is carried out by using Matlab/simulink software. The comparison between existing topology and proposed topology is given. The results are discussed and presented.

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Effendi, Effendi, Ira Devi Sara, and Rakhmad Syafutra Lubis. "Disain SPWM Multilevel Inverter Satu Fasa Lima Belas Level." Jurnal Rekayasa Elektrika 12, no. 2 (August 30, 2016): 60. http://dx.doi.org/10.17529/jre.v12i2.3966.

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Fifteen level single phase multilevel inverter is constructed using power circuit consist of 7 MOSFETs, seven independents DC sources, seven diodes, and an H-Bridge circuit. Switching method used in this MLI is sinusoidal pulse width modulation (SPWM) multicarrier where the reference wave in the form of a sinusoidal wave. Multicarrier SPWM circuit is designed using electronic components such as Op-Amp that used as a comparator and some logic gates such as AND, OR and NOT gate to trigger S1, S2, S3, S4, S5, S6, S7, and H-Bridge circuit. Carrier waves used in this MLI modified from the triangle wave that having a frequency into carrier waves without frequency (DC sources) where THD that generated into 5.502%. While methods that use frequency such as Phase Disposition PWM (PD PWM), Phase Shift PWM (PS-PWM), and Carrier Overlapping PWM (CO PWM) that produces THD greater than the proposed method, this system was simulated using PSIM software.

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Nwosu, Cajethan M., Cosmas U. Ogbuka, and Stephen E. Oti. "Analysis, design and simulation of digital controlled symmetrical seven levels inverter." Journal of Electrical Engineering 69, no. 3 (June 1, 2018): 233–38. http://dx.doi.org/10.2478/jee-2018-0031.

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Abstract An analysis, design and simulation of digital controlled symmetrical seven levels inverter is presented in this paper. Against the contemporary use of two asymmetrical DC sources with two H-bridge cells to generate seven levels inverter two DC sources of equal voltage ratings are used through digital control strategy to realize seven levels output voltage. By utilizing limited number of active switching components and avoiding the usual complex PWM control techniques for multilevel inverters by way of digital control strategy, high efficiency multilevel inverter systems due to reduction in total harmonic distortion and switching losses is guaranteed. Owing to symmetry of the H-bridge cells, a simple and single programmed counter built around J-K flip is required irrespective of number of cascades. The analyzed and designed system has been simulated in MATLAB/SIMULINK environment. With an R-L load of 200 Ω and 200 mH, improved total harmonic distortions (THDs) for the inverter current and voltage are 7.59% and 16.89% respectively. The obtained results show that the control-circuit-based multilevel inverter topology is most suited for applications in solar powered inverter systems.

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Mulyo Utomo, Wahyu, Afarulrazi Abu Bakar, Suhaila Alias, Sim Sy Yi, Muhammad Ikhsan Setiawan, Sri Wiwoho Mudjanarko, Agus Sukoco, Yonis M. Buswig, and Taufik Taufik. "Modeling of A Single Phase 7-Level Cascaded H-Bridge Multilevel Inverter." International Journal of Engineering & Technology 7, no. 2.6 (March 11, 2018): 327. http://dx.doi.org/10.14419/ijet.v7i2.6.11704.

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Recently, almost all industrial devices are mostly built on electronic devices which are precisely sensitive to harmonic. In order to meet the requirement from the industries demand aimed at a free-harmonics and high power rating source is remarkably increased in past few years. An inverter which a device or electric circuit that convert direct current to alternating current is one of the electronic devices that give concern to researchers for improvement of generating a neat power source. The inverter can be categorized into a single level and multilevel inverter. As compared to single level inverter, multilevel inverter offers minimum harmonic distortion and higher power output. This paper presents a model of multilevel inverter using 7-level Cascaded H-Bridge of multilevel DC-AC inverter to reduce total harmonic distortion with different sinusoidal pulse width modulation such as phase disposition and phase opposition disposition. Simulation output of single phase multilevel inverter cascaded H-bridge are analysed and verified in the Matlab/Simulink software. The result show that the 7-level cascaded H-Bridge multilevel inverter with phase disposition technique generate less total harmonic distortion if it is compared to the phase opposition disposition technique.

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Zhang, Hao, Xiaojin Wan, Weijie Li, Honghui Ding, and Chuanzhi Yi. "Observer-Pattern Modeling and Slow-Scale Bifurcation Analysis of Two-Stage Boost Inverters." International Journal of Bifurcation and Chaos 27, no. 06 (June 15, 2017): 1750096. http://dx.doi.org/10.1142/s0218127417500961.

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This paper deals with modeling and bifurcation analysis of two-stage Boost inverters. Since the effect of the nonlinear interactions between source-stage converter and load-stage inverter causes the “hidden” second-harmonic current at the input of the downstream H-bridge inverter, an observer-pattern modeling method is proposed by removing time variance originating from both fundamental frequency and hidden second harmonics in the derived averaged equations. Based on the proposed observer-pattern model, the underlying mechanism of slow-scale instability behavior is uncovered with the help of eigenvalue analysis method. Then eigenvalue sensitivity analysis is used to select some key system parameters of two-stage Boost inverter, and some behavior boundaries are given to provide some design-oriented information for optimizing the circuit. Finally, these theoretical results are verified by numerical simulations and circuit experiment.

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Maheshwari, Aneel Kumar, Mukhtiar Ahmed Mahar, Abdul Sattar Larik, and Abdul Hameed Soomro. "Design and Analyses of Multi-Carrier Pulse Width Modulation Techniques for Double Level Circuit Based Cascaded H-Bridge Multilevel Inverter." European Journal of Electrical Engineering 23, no. 2 (April 23, 2021): 131–36. http://dx.doi.org/10.18280/ejee.230206.

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The paper introduces the cascaded H-Bridge multi-level inverter with single-phase arrangement connected series with full-bridge inverter and CHBMLI configuration integrated with Double level circuit is proposed to reduce the harmonic distortion to get high power quality. In the proposed configuration, a half-bridge inverter has been implemented to increase the output voltage waveform nearly twice as compared with the conventional Cascaded H-Bridge MLI. For high Power quality, the output voltage waveform with the reference of sinusoidal, the phase opposition disposition carrier arrangement has been utilized in PWM for producing gate pulse of switches. The high waveform of output voltage achieved with the less no of switches, less % THD distortion, less conduction and switching losses. The purposed symmetrical model of CHBMLI is successfully verified using MATLAB based on simulation with DLC configuration.

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Das, Madan Kumar, Akanksha Sinha, and Kartick Chandra Jana. "A Novel Asymmetrical Reduced Switch Nine-Level Inverter." Journal of Circuits, Systems and Computers 29, no. 08 (September 25, 2019): 2050117. http://dx.doi.org/10.1142/s0218126620501170.

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A novel asymmetrical nine-level inverter topology using only six switches along with its generalized structure are presented in this paper. The proposed reduced switch multilevel inverter topology makes use of a lower total standing voltage for a required output voltage as compared to the existing ones. One of the major advantages of the proposed multilevel inverter over other existing topologies is that, the circuit can be extended to a higher-level inverter, by cascading a few proposed inverter modules and can also be extended to the three-phase structure very easily, thereby making the inverter structure simple. In addition to this, the proposed inverter module does not require any additional H-bridge circuit to obtain the negative voltage levels for AC voltage, resulting in reduced voltage stress on the switches. This paper also incorporates an effective technique to determine the total standing voltage as well as the switching and conduction losses of the inverter. The MATLAB/Simulink based proposed nine-level as well as an 81-level inverters are modeled and the simulation results are presented. An experimental prototype of nine-level inverter using six switches is developed and tested to validate the simulation results.

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Brahmana, Kurnia. "Utilization of the EG8010 Microcontroller to Construct a Pure Sine Inverter Using the Single Phase Sinusoidal Inverter ASIC (Application Specific Integrated Circuit) Method." Journal of Technomaterials Physics 2, no. 2 (August 27, 2020): 75–84. http://dx.doi.org/10.32734/jotp.v2i2.5359.

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A pure sine inverter has been successfully designed by utilizing the EG8010 microcontroller which is used as an alternative energy source when the main power grid is cut. This pure sine inverter tool functions to stop the conversion when the power drops from the minimum value. This tool consists of a microcontroller to run the DC to AC converter instructions for 380 volts. Meanwhile, DC functions as a voltage source that provides the overall voltage. The signal waves that have been converted from DC to AC on the EG8010 Module are needed to control FET which functions as a signal amplifier. This signal is used to drive four FET n-channel and IRF480 which work alternately in sending data to the power FET to form an H-Bridge bridge and the output signal from the H-Bridge. Furthermore, the H-Bridge bridge and the output signal from the H-Bridge are sent through the transformer, so that the final output signal is a pure DC to AC sine wave. The resulting pure sine wave dc to ac can provide a maximum power of 240 watts.

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Prabaharan, Natarajan, and Kaliannan Palanisamy. "Analysis of cascaded H‐bridge multilevel inverter configuration with double level circuit." IET Power Electronics 10, no. 9 (May 4, 2017): 1023–33. http://dx.doi.org/10.1049/iet-pel.2016.0506.

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Ramya, M., P. Usha Rani, G. Ganesan @ Subramanian, and K. Ramash Kumar. "Neural network controller based sequential switch cascaded H-bridge multilevel inverter." International Journal of Engineering & Technology 7, no. 2.8 (March 19, 2018): 592. http://dx.doi.org/10.14419/ijet.v7i2.8.10527.

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This paper presents a novel cascaded multilevel inverter structure with reduced devices. This structure is termed as sequential switch cascaded multilevel inverter. The basic asymmetrical hybrid circuit is described and is capable of generating 17 voltage levels. The various modes of deriving 17 levels are explained and the proposed topology is compared with existing topologies in various aspects. Neural network controller can be used to generate the gating pulses. The algorithm can be trained online by using back propagation algorithm and also an algorithm to determine the number of levels, maximum voltage ratings and power loss is explained. The simulation can be done by MATLAB Simulink.

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SAODAH, SITI, and SRI UTAMI. "Perancangan Sistem Grid Tie Inverter pada Pembangkit Listrik Tenaga Surya." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 7, no. 2 (May 24, 2019): 339. http://dx.doi.org/10.26760/elkomika.v7i2.339.

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ABSTRAKGrid Tie Inverter (GTI) merupakan inverter yang digunakan untuk mengubah energi yang dihasilkan panel surya berupa arus searah (DC) menjadi arus bolakbalik (AC). Keluaran dari GTI berupa bentuk gelombang sinusoidal yang masih belum ideal dan mempunyai nilai Total Harmonic Distortion (THD) di atas 3% serta nilai efisiensi belum mencapai 90%. Pengurangan nilai THD dan peningkatan efisiensi dapat dilakukan melalui proses kontrol switching pada inverter. Penelitian ini mengusulkan inverter dengan boost converter dua tahap, buck converter dua tahap, rangkaian switching control inverter, H-Bridge inverter dan rangkaian LC filter. Teknik switching dari inverter yang diusulkan terdiri dari kombinasi modulasi lebar pulsa sinusoida dan gelombang persegi. Berdasarkan hasil pengujian didapatkan nilai THD sebesar 4,97%. Terdapat selisih sebesar 1,97% dari nilai awal perancangan. Untuk efisiensi rata-rata inverter off-grid (tidak terkoneksi dengan PLN) sebesar 89,48% dan 79,4% untuk inverter on-grid (terkoneksi dengan PLN).Kata kunci: GTI, boost converter, buck converter, switching control,grid, THD. ABSTRACTGrid Tie Inverter (GTI) is an inverter used to convert energy resulted by solar panels in the form of direct current (DC) to alternating current (AC). The output of GTI is unideal sinusoidal and having Total Harmonic Distortion (THD) above 3% and efficiency below 90%. Reducing the THD value and increasing efficiency can be done through switching control process on inverters. This research proposed an inverter using two-stage boost converter, two-stage buck converter, an inverter switching control circuit, H-Bridge inverter and LC filter circuit. The switching technique of the proposed inverter system combined sinusoidal and square wave width modulation. The result showed THD of the proposed system is 4.97%, and still, there is a difference of 1.97% of the desired value. For average efficiency of off-grid systems (not connected with State Electricity Company/PLN) is 89.48% and 79.4% for on-grid systems (connected with PLN).Keywords: GTI, boost converter, buck converter, switching control,grid, THD

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Ibrahim, Danny, and Kais Aboud. "Multi-level inverter for driving PV water pumps." Association of Arab Universities Journal of Engineering Sciences 27, no. 4 (December 31, 2020): 62–71. http://dx.doi.org/10.33261/https://doi.org/10.33261/jaaru.2020.27.4.006.

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In this research, we have developed a system for driving PV water pumps based on multi-level inverters, where cascaded H-Bridge-MLI was studied to improve conversion efficiency, by testing three different strategies to generate pulses for electronic elements and determining the best strategy between them, then compare it with the traditional 2-LEVEL inverter circuit. The results showed the superiority of Phase Disposition (PD-PWM) strategy, where the THD Ratio of the voltage and current wave was minimal compared to the other strategies at different carrier wave frequencies in addition to studying the effect of the number of voltage levels on THD Ratio, and when we simulated a three phase (Cascaded H-Bridge 7 level) inverter circuit based on PD-PWM strategy at 3000 Hz carrier wave frequency, the THD Ratio of voltage wave has not exceed 11%, While in the traditional 2-LEVEL inverter, the THD Ratio of voltage wave is about 66%, which shows the importance of MLI to improve conversion efficiency. The proposed driving system operates according to the v / f control system to control the pump speed in proportion to the intensity of the solar radiation while maintaining a constant torque, and also works to track the maximum power point MPPT according to P&O algorithm, and when we simulated the system by MATLAB / SIMULINK the results showed the effectiveness and reliability of the proposed system

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Sun, Haitao, Ali Farzan Moghaddam, Abdalla Hussein Mohamed, Mohamed Nabil Ibrahim, Peter Sergeant, and Alex Van den Bossche. "Controlling a Switched Reluctance Motor with a Conventional Three-Phase Bridge Instead of Asymmetric H-Bridges." Energies 11, no. 12 (November 22, 2018): 3242. http://dx.doi.org/10.3390/en11123242.

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This paper proposes a new driving method for switched reluctance motors (SRMs) using the standard full-bridge inverter. In spite of changing the internal structure of an SRM, the proposed method uses an extra ring structure circuit to make it possible for the inverter to drive the SRM. Next to the standard converter, a controllable DC source is needed. With theoretical analysis and calculation, the reference value of the circulating current in the ring structure was determined and the new method was proven via simulation. A comparison was made with the conventional method for driving an SRM: the asymmetric H-bridges. Also, the current studies were then made to confirm that the SRM could be controlled without lowering the performance of the machine. Experimental verification was also made under different conditions, as well as comparison with the simulation results.

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Lei, Bo, Guochun Xiao, Xuanlv Wu, Yuba-Raj Kafle, and Lifu Zheng. "Bifurcation Analysis in a Digitally Controlled H-Bridge Grid-Connected Inverter." International Journal of Bifurcation and Chaos 24, no. 01 (January 2014): 1450002. http://dx.doi.org/10.1142/s0218127414500023.

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The bifurcation behavior of a digitally controlled H-bridge grid-connected inverter is studied in this paper. The discrete-time model of this time-varying system is derived for inherent time delay in a digitally controlled system. Theoretical analyses indicate that only Hopf bifurcation can take place when the system loses its stability. The analytical expression of oscillation frequency is also derived in this paper. Moreover, the stability and instability boundaries for all switching cycles within a line cycle are described by analytical expressions. Finally, the theoretical results are verified by numerical simulations, circuit simulations and experimental measurements. These aforementioned conclusions provide an insight into the design process of the inverter system in terms of stability behavior and instability phenomenon.

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Suroso, Suroso, Abdullah Nur Aziz, and Toshihiko Noguchi. "Five-level PWM Inverter with a Single DC Power Source for DC-AC Power Conversion." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (September 1, 2017): 1212. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1212-1219.

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This paper presents a circuit configuration of five-level PWM voltage-source inverter developed from the three-level H-bridge inverter using only a single DC input power source. In the proposed five-level inverter, an auxiliary circuits working as the voltage balancing circuits of the inverter’s DC capacitors is presented. The auxiliary circuits work to keep stable DC capacitor voltages of the inverter, and also to reduce the capacitor size of the inverter. The unique point of the proposed balancing circuits is that it needs only a single voltage sensor to control the voltages of the two capacitors in the inverter. Moreover, a minimum number the inverter’s switching devices is also an important feature of the proposed inverter topology. A simple proportional integral controller is applied to control the voltage of the DC capacitors. The proposed topology is tested through computer simulation using PSIM software. Laboratory experimental tests were also conducted to verify the proposed inverter circuits. The computer simulation and experimental test results showed that the proposed balancing circuits works properly keeping stable voltages across the two DC capacitors of the inverter using only a single voltage sensor. The inverter also works well to synthesize a five-level PWM voltage waveform with sinusoidal load current.

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Suroso, Suroso, Winasis Winasis, Priswanto Priswanto, and Sholikhah Sholikhah. "Improving output current of inductor-cell based five-level CSI using hysteresis current controller." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (March 1, 2021): 249. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp249-257.

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Current source inverter (CSI) operates to output a specified ac current waveform from dc current sources. Talking about power quality, harmonics distortion of ac waveform is a problem of an inverter circuit. Generating a multilevel current waveform will have less harmonics content than a traditional three-level current waveform. In addition to non-ideal conditions of power switches, i.e. voltage drop in diodes, conductors or controlled switches, the performance of current controller applied in an inverter circuit will considerably affect the ac waveform quality produced by inverter circuit. This paper presents and discusses application of hysteresis current controller in the five-level H-bridge with inductor-cell current source inverter. The current controller performance was compared with the proportional integral current controller. Some test results are presented and discussed to explore the advantages of hysteresis controller in reducing the current ripple and harmonics distortion of output current.

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L.Kuppuswamy, C., and T. A. Raghavendiran. "Developed Z-Source H-Bridge Multilevel Inverter with Reduced Components for Speed Control of Induction Motor." IAES International Journal of Robotics and Automation (IJRA) 7, no. 3 (September 1, 2018): 205. http://dx.doi.org/10.11591/ijra.v7i3.pp205-214.

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This paper introduces a new developed H-bridge based cascaded multilevel inverter with reduced components. This topology has a low complexity thereby reducing the overall cost of an inverter. The proposed circuit is connected with a PI controller and switches are controlled by pulse width modulation technique to control the speed of an induction motor. The simulation was carried out using Matlab / Simulink. The simulation of the same was made and performance of various PWM techniques such as Phase disposition (PD), Phase opposite disposition (POD) and phase shifted (PS) and there results were compared on different quantitative measures such as Voltage, current stator Total harmonic Distortion, Voltage stress and rise time. It was observed that that the proposed power circuit with Phase disposition pulse width modulation (PDPWM) that offers reduced total harmonic Detection in terms of voltage, current and phase was found to be very less when compared to other Pulse width modulation techniques. The simulation results will have a fast and quick rise time thereby making this inverter a choice for speed control of induction motor.

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Sadikin, Muhammad, Tomonobu Senjyu, and Atsushi Yona. "DC–DC Type High-Frequency Link DC for Improved Power Quality of Cascaded Multilevel Inverter." International Journal of Emerging Electric Power Systems 14, no. 4 (June 28, 2013): 333–40. http://dx.doi.org/10.1515/ijeeps-2012-0007.

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Abstract Multilevel inverters are emerging as a new breed of power converter options for power system applications. Recent advances in power switching devices enabled the suitability of multilevel inverters for high voltage and high power applications because they are connecting several devices in series without the need of component matching. Usually, a transformerless battery energy storage system, based on a cascaded multilevel inverter, is used as a measure for voltage and frequency deviations. System can be reduced in size, weight, and cost of energy storage system. High-frequency link circuit topology is advantageous in realizing compact and light-weight power converters for uninterruptible power supply systems, new energy systems using photovoltaic-cells, fuel-cells and so on. This paper presents a DC–DC type high-frequency link DC (HFLDC) cascaded multilevel inverter. Each converter cell is implemented a control strategy for two H-bridge inverters that are controlled with the same multicarrier pulse width modulation (PWM) technique. The proposed cascaded multilevel inverter generates lower voltage total harmonic distortion (THD) in comparison with conventional cascaded multilevel inverter. Digital simulations are carried out using PSCAD/EMTDC to validate the performance of the proposed cascaded multilevel inverter.

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Krishnan, S., N. Ravikumar, P. Thirumal, and R. Balamurali. "Harmonic Analysis of Multilevel H-Bridge Inverter with Reduced Switches for Solar Power Applications." Journal of Computational and Theoretical Nanoscience 17, no. 11 (November 1, 2020): 4925–29. http://dx.doi.org/10.1166/jctn.2020.9258.

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A multilevel H-bridge dc–ac converter is an electronic device, the multilevel converter enhanced stepped output with less switches. This paper deals with H-Bridge multilevel converter it requires only few switches when compared to traditional method. So in proposed method using only few switches, and it requires less gate triggering circuit. Less switches will operates for certain period of time. The proposed circuit is simulated using MATLAB software in that fast Fourier transform test to find the total harmonic distortion. With the proposed method multilevel converter can be used in solar power applications to convert dc supply into ac supply, it produces less harmonics it will enhance life span of the motor and efficiency of the motor will raise because in proposed multilevel converter there is a less switches are used.

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Saeedian, Meysam, Edris Pouresmaeil, Emad Samadaei, Eduardo Manuel Godinho Rodrigues, Radu Godina, and Mousa Marzband. "An Innovative Dual-Boost Nine-Level Inverter with Low-Voltage Rating Switches." Energies 12, no. 2 (January 9, 2019): 207. http://dx.doi.org/10.3390/en12020207.

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This article presents an innovative switched-capacitor based nine-level inverter employing single DC input for renewable and sustainable energy applications. The proposed configuration generates a step-up bipolar output voltage without end-side H-bridge, and the employed capacitors are charged in a self-balancing form. Applying low-voltage rated switches is another merit of the proposed inverter, which leads to extensive reduction in total standing voltage. Thereby, switching losses as well as inverter cost are reduced proportionally. Furthermore, the comparative analysis against other state-of-the-art inverters depicts that the number of required power electronic devices and implementation cost is reduced in the proposed structure. The working principle of the proposed circuit along with its efficiency calculations and thermal modeling are elaborated in detail. In the end, simulations and experimental tests are conducted to validate the flawless performance of the proposed nine-level topology in power systems.

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Kaliannan, Thenmalar, Johny Renoald Albert, D. Muhamadha Begam, and P. Madhumathi. "Power Quality Improvement in Modular Multilevel Inverter Using for Different Multicarrier PWM." European Journal of Electrical Engineering and Computer Science 5, no. 2 (April 14, 2021): 19–27. http://dx.doi.org/10.24018/ejece.2021.5.2.315.

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Pulse width modulation (PWM) is a powerful technique employed in analog circuit convert with a microprocessor based digital output. Besides, Pseudo Random Multi Carrier (PRMC) involves in two random PWM strategies to minimize the harmonic order for 9- level cascaded multilevel H-bridge (CHB) inverter and 9-level Modular Multilevel inverter are introduced. The design mainly focuses on the (Pulse Width Modulation) PWM method, in which two nearest voltage levels are approached in estimated output voltage prediction based on the Partial swarm optimization (PSO) algorithm, and it conveys a random variation in the pulse position of output by Pseudo Random Multi Carrier- Pulse Width Modulation (PRMC-PWM). The CHB and the Modular inverters generate low distortion output by using PMRC. The simulation and prototype circuit are developed for the nine level output using sixteen switches and ten with Resistive-Inductive (R-L) load variation condition. The power quality is improved in CHB and Modular inverter (MoI) with minimized harmonics in various modulation index (MI) as varied from 0.1 up to 0.8. The circuit is designed by using a Field Programmable Gate Array (FPGA), Implementing a PSO algorithm for both CHB, and MoI are proposed. The comparisons of results are verified with lower order harmonics and find the best switching angle across the MLI switches. Modular inverter furthermore investigates with PRMC, Random Nearest level (RNL) modulation scheme are presented, and the proposed circuit is along with the respective degree of the output voltage were synthesized in non-linear load by the development of reactive power across a motor load.

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Gopal, Y., K. P. Panda, D. Birla, and M. Lalwani. "Swarm Optimization-Based Modified Selective Harmonic Elimination PWM Technique Application in Symmetrical H-Bridge Type Multilevel Inverters." Engineering, Technology & Applied Science Research 9, no. 1 (February 16, 2019): 3836–45. http://dx.doi.org/10.48084/etasr.2397.

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The problem of elimination of harmonics and the need of a large number of switches in multilevel inverters (MLIs) have been a hot topic of research over the last decades. In this paper, a new variant swarm optimization (SO) based selective harmonic elimination (SHE) technique is described to minimize harmonics in MLIs, which is a complex optimization problem involving non-linear transcendental equation. Optimum switching angles are calculated by the proposed algorithms considering minimum total harmonic distortion (THD) and the best results are taken for controlling the operation of MLIs. The performance of the proposed algorithm is compared with the genetic algorithm (GA). Conventional MLIs have some disadvantages such as the requirement of a large number of circuit components, complex control, and voltage balancing problems. A novel seven-level reduced switch multilevel inverter (RS MLI) is proposed in this paper to recoup the need of a large number of switches. Matlab/Simulink software is used for the simulation of two symmetrical topologies, i.e., a seven-level cascaded H-bridge multilevel inverter (CHB MLI) and a seven-level (RS MLI). Simulation results are validated by developing a prototype of both MLIs. The enhancement of the output voltage waveform confirms the effectiveness of the proposed SO SHE approach.

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Tashiwa, Ibrahim Emmanuel, Gyang Davon Dung, and Benson Stephen Adole. "Review of Multilevel Inverters and Their Control Techniques." European Journal of Engineering Research and Science 5, no. 6 (June 3, 2020): 659–64. http://dx.doi.org/10.24018/ejers.2020.5.6.1707.

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Multi-level inverter is attaining higher AC power using a series of power semiconductor switches with numerous lower voltage DC sources to implement the power conversion by synthesizing a staircase voltage waveform. Sources like super capacitors, batteries, solar panels and other renewable energy voltage sources make up the multiple DC voltage sources. This work looks at the advantages and likely disadvantage of multi-level inverter, highlighting some of the shortfalls of existing inverter topologies while considering the effects of emerging Hybrid MLI Topologies. Hence this review paper proposes a distinctive seven level cascaded H-bridge multi-level inverter configuration in which the POD PWM technique is adopted. This design would potentially redress the problems inherent in other inverter circuit topologies reviewed.

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Otong, Muhamad, and Ceri Ahendyarti. "Control design variable speed drive three-phase induction motor based cascaded H-Bridge seven level." MATEC Web of Conferences 218 (2018): 01004. http://dx.doi.org/10.1051/matecconf/201821801004.

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The design variable speed drive induction motor is based on the power supply system of cascaded H-bridge seven level inverter. The variable speed regulation of the induction motor is performed by controlling the variable magnitude and output voltage frequency of the CHB circuit. The output voltage of the CHB circuit is generated by synthesizing the reference voltage signal derived from the field oriented control algorithm model of the induction motor. Testing and circuit operation mode using switching phase-switch technique on variable speed drive system of induction motor is done to know system performance in transient and steady-state by using computer software. The response of the simulation shows the conformity of the proposed concept. From this research is expected to improve the quality and capacity of output power in modular way so that it can be applied to the electric drive in general.

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Rasheed, Rabiya, Saju K K, and Bindu V. "A five-level multilevel topology utilizing multicarrier modulation technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 2 (June 1, 2019): 868. http://dx.doi.org/10.11591/ijpeds.v10.i2.pp868-873.

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This paper presents a new topology for cascaded H-bridge multilevel inverter utilizing multicarrier modulation technique. The new five-level topology utilizes a capacitive divider network consisting of two capacitors for producing output voltage levels. The developed circuit has reduced number of switches and dc sources compared to conventional five level inverters. Five main power switches, a single additional diode apart from antiparallel diodes, two capacitors and a dc supply constitute a single five level unit. Simulations as well as experimental results are verified for the new topology utilising multicarrier modulation technique with reduced harmonic distortions in the output.

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Josh, F. T., J. Jency Joseph, K. Vinoth Kumar, and Blessen Varghese Mathew. "Experimental Analysis of Symmetrical Cascaded H Bridge Nine Level Multilevel Inverter for Microgrid Application." Journal of Computational and Theoretical Nanoscience 17, no. 5 (May 1, 2020): 2074–79. http://dx.doi.org/10.1166/jctn.2020.8851.

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This research study deals with the Design and implementation of a Symmetrical Cascaded H Bridge Nine level Multilevel Inverter (MLI) based structure voltage supply device primarily based static synchronous compensator (STATCOM) using curved pulse dimension (SPW) modulation management techniques simulated in Matrix Laboratory. The main theme of this article shows the voltage steadiness within the facility mistreatment structure electrical converter primarily based STATCOM. Hence, replacement symmetrical standard structures STATCOM is utilized to extent support voltage fluctuations such as sag plus swell conditions with additionally to separate current harmonics, voltage harmonics contained by the gear method. The structure Static Synchronous Compensator is employed for the purpose of PCC. A Fuzzy logic controller is used for minimization of error signal and thus sending the pulses to the SPWM based triggering circuit for the multilevel inverter. The hardware model of the proposed system is implemented and results are verified.

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Hachemi, H., A. Allali, and B. Belkacem. "Control of the powerquality for a DFIG powered by multilevel inverters." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 5 (October 1, 2020): 4592. http://dx.doi.org/10.11591/ijece.v10i5.pp4592-4603.

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This paper treats the modeling, and the control of a wind power system based on a doubly fed induction generator DFIG, the stator is directly connected to the grid, while the rotor is powered by multilevel inverters. In order to get a decoupled system of controlfor an independently transits of active and reactive power, a vector control method based on stator flux orientation SFOC is considered: Direct vector control based on PI controllers. Cascaded H-bridge CHBI multilevel inverters are used in the rotor circuit to study its effect on supply power quality. All simulation models are built in MATLAB/Simulink software. Results and waveforms clearly show the effectiveness of vector control strategy. Finally, performances of the system will tested and compared for each levels of inverter.

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Kumar, Satish, and M. Sasi Kumar. "Asymmetric hybrid multilevel inverter with reduced harmonic using hybrid modulation technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 2 (June 1, 2020): 605. http://dx.doi.org/10.11591/ijpeds.v11.i2.pp605-610.

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This paper studies the Asymmetric cascaded three phase multilevel inverter developed with hybrid modulation technique applied for an industrial application. The aim of this paper to reduce the Total harmonics distortion in the cascaded multi level inverter by introducing the new concept to develop the three phase CMLI. This inverter has two segments, one segment has H-bridge inverter and another segment has sequential arrangement of power semi conductor switches with asymmetrical voltage source in the ratio of 1:2. Similarly develop the segments for other phases. This new topology is called as Hybrid MLI. This hybrid MLI is used to reduce the no of semiconductor device requirement and the Total harmonics distortion. The inverter is controlled by Phase disposition (PD) and alternative phase opposition disposition PWM technique (APOD). This control technique is used to minimize the current harmonic and increase the system performance. The circuit is simulated using Matlab circuit and its performance is compared using PD and APOD PWM techniques and verified with simulation results.

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Aboadla, Ezzidin Hassan, Sheroz Khan, Mohamed H. Habaebi, Teddy Surya Gunawan, Belal A. Hamida, Mashkuri Bin Yaacob, and Ali Aboadla. "A novel optimization harmonic elimination technique for cascaded multilevel inverter." Bulletin of Electrical Engineering and Informatics 8, no. 2 (June 1, 2019): 405–13. http://dx.doi.org/10.11591/eei.v8i2.1500.

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The main goal of utilizing Selective Harmonic Elimination (SHE) techniques in Multilevel Inverters (MLI) is to produce a high-quality output voltage signal with a minimum Total Harmonic Distortion (THD). By calculating N switching angles, SHE technique can eliminate (N-1) low order odd harmonics of the output voltage waveform. To optimized and obtained these switching angles, N of nonlinear equations should be solved using a numerical method. Modulation index (m) and duty cycle play a big role in selective harmonic elimination technique to obtain a minimum harmonic distortion and desired fundamental component voltage. In this paper, a novel Optimization Harmonic Elimination Technique (OHET) based on SHE scheme is proposed to re-mitigate Total Harmonic Distortion. The performance of seven-level H-bridge cascade inverter is evaluated using PSIM and validated experimentally by developing a purposely built microcontroller-based printed circuit board.

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Chang, Chien-Hsuan, Hung-Liang Cheng, and En-Chih Chang. "Using the buck-interleaved buck–boost converter to implement a step-up/down inverter." Engineering Computations 34, no. 2 (April 18, 2017): 272–84. http://dx.doi.org/10.1108/ec-08-2015-0241.

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Purpose A typical photovoltaic grid-connection power system usually consists of multi-stage converters to perform multiple functions simultaneously. To simplify system configuration, reduce cost and improve conversion efficiency, this paper aims to develop a buck–boost-type inverter. The proposed inverter has both step-up and step-down functions, so that it is suitable for applications with wide voltage variation. As only one power switch operates with high frequency at one time, switching losses can significantly be reduced. Design/methodology/approach A step-up/down inverter is developed by adopting a buck-interleaved buck–boost (BuIBB) DC-DC converter and connecting with an H-bridge unfolding circuit with line-commutated operation. Finding The proposed circuit can work functionally as either a buck-type or boost-type inverter, so that partial energy can be directly delivered to output to improve efficiency. The input current is shared by two inductors, leading to the reduction of current stresses. Research limitations/implications To apply the proposed inverter to micro-inverter applications in the future, developing a step-up/down inverter with a higher conversion ratio will be considered. Practical implications A laboratory prototype is built accordingly to verify the feasibility of the proposed inverter. The experimental results are presented to show the effectiveness. Originality/value This paper proposes a step-up/down inverter by using the BuIBB converter, which is innovatively studied.

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Vijayalakshmi, K., and Chinnapettai Ramalingam Balamurugan. "Z–Source Multilevel Inverter Based on Embedded Controller." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 1 (April 1, 2017): 1. http://dx.doi.org/10.11591/ijeecs.v6.i1.pp1-8.

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In this paper Embedded based Z-source multilevel inverter (ZSMLI) is proposed. This work implements a five level cascaded H-bridge Z-source inverter by using embedded control. Switching devices are triggered using embedded controller. In this controller coding is described by using switching table. The presence of Z-source network couples inverter main circuit to the power source that providing special features that can overcome the limitations of VSI (voltage source inverter) and CSI (current source inverter). The Z-source concept can applicable in all dc-ac, dc-dc, ac-dc and ac-ac power conversions. Simulation model of Z-source multilevel inverter based on embedded controller has been built in MATLAB/SIMULINK. The Performance parameters of Z-source MLI such as RMS (root mean square) output voltage, THD (total harmonic distortion) and DC component have been analysed for various inductance (L) and capacitance (C) value.

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LEI, BO, GUOCHUN XIAO, XUANLV WU, and LIFU ZHENG. "A UNIFIED "SCALAR" DISCRETE-TIME MODEL FOR ENHANCING BIFURCATION PREDICTION IN DIGITALLY CONTROLLED H-BRIDGE GRID-CONNECTED INVERTER." International Journal of Bifurcation and Chaos 23, no. 07 (July 2013): 1350126. http://dx.doi.org/10.1142/s0218127413501265.

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In this paper, a unified "scalar" discrete-time model is proposed for enhanced bifurcation prediction in digitally controlled H-bridge grid-connected inverter system. The model is established by analytically expressing the elements of the matrix exponential involved in the exact discrete-time model. In high-order system, different from the discrete-time model using the state-transition matrix directly, obtaining the discrete-time model of the state-variable vector only, in this system, the discrete-time model of each state variable can be obtained directly and separately. In addition, the stability boundary of Hopf bifurcation, period-doubling bifurcation and saddle-node bifurcation can be obtained by analytical expressions. The modeling method is validated by an LCL-filter system as an example using practical circuit parameters. The results of the analysis can simplify the modeling process and enhance the bifurcation prediction of the digitally controlled inverter system.

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Alnahhas, Mutaz, and Abdul Wali Abdul Ali. "Design and Implementation of a Solar Panel Inverter as STATCOM Compensator." ELEKTRIKA- Journal of Electrical Engineering 20, no. 1 (April 30, 2021): 1–8. http://dx.doi.org/10.11113/elektrika.v20n1.234.

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Abstract:

A power system suffers from different losses, which can cause tragic consequences. Reactive power presence in the power system increases system losses delivered power quality and distorts the voltage. As a result, many researches are concerned with reactive power compensation. Moreover, reactive power should not be transmitted through a transmission line to a longer distance. Thus, Flexible AC Transmission Systems (FACTS) devices such as static synchronous compensator (STATCOM), static volt-ampere compensator (SVC), and unified power flow controller (UPFC) are utilized to overcome these issues. The necessity of balancing resistive power generation and absorption throughout a power system becomes a big concern in the electrical systems for reactive power compensation. Static synchronous compensator STATCOM is a shunt device used for the generation or absorption of reactive power as desired. STATCOM provides smooth and fast compensation and power factor correction. In this thesis, a solar Static synchronous compensator takes the DC input from the solar panel and inverted utilizing an H-bridge inverter. This topology is used for reactive power compensation and power factor correction at the load side. The simulation was done using MATLAB Simulink simulation tools. The system model was built using a single solar array for DC input and controlled using perturbation and observe method to maximize its power output. The STATCOM model was built using for high power MOSFETs to perform H- bridge inverter. The STATCOM was controlled using a hysteresis band current control using a PI controller to inject the current into the system. A hardware prototype of STATCOM was built and controlled using an Arduino microcontroller. The simulation results have demonstrated the STATCOM model of reactive power compensation and correcting the power factor under different loads of conditions. It also highlighted the proportional relation between reactive power presence and the increased cost of electricity bills. The proposed smart meter of STATCOM gives accurate reading and measurement. Overall, the simulated results showed a satisfactory level of compensation of reactive power and power factor correction. The system contained three significant parts; solar array, H- bridge inverter, and the PI controller. The smart meter circuit was capable of displaying readings regarding input solar voltage, current, and power factor on the LCD screen.

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Journal articles on the topic 'H-bridge inverter circuit'

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