Journal articles: 'Three-phase four-leg voltage source inverter'

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Su, Ming, Xue Yan Ma, and Yan Sun. "The Control Technology of the Z-Source Three-Phase Four-Leg Inverter Based on Computer Simulation." Advanced Materials Research 981 (July 2014): 688–94. http://dx.doi.org/10.4028/www.scientific.net/amr.981.688.

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Z-source inverter can boost the voltage of the DC-side, allow the two switches of the same leg conducting at the same time and it has some other advantages. The zero-sequence current flows through the fourth leg of the three-phase four-leg inverter so the three-phase four-leg inverter can work with unbalanced load. This paper presents a Z-source three-phase four-leg inverter which combines a Z-source network with three-phase four-leg inverter. The circuit uses simple SPWM modulation technique and the fourth leg uses fully compensated control method. The inverter can maintain a symmetrical output voltage when the proposed scheme under the unbalanced load.

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Komrska, Tomáš, and Tomáš Glasberger. "Pulse Width Modulation of Three Phase Inverters Based on Linear Programming." TRANSACTIONS ON ELECTRICAL ENGINEERING 8, no. 3 (2020): 44–48. http://dx.doi.org/10.14311/tee.2019.3.044.

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Traditional three-phase voltage-source inverters supplied by constant dc-link voltage usually utilize the space vector PWM to achieve maximum output voltage. This paper deals with optimization of inverter leg voltages using linear programming method. System definition is based on the relationship between the known voltage vector, which is demanded by an upper control loop and the unknown leg voltages which enter the carrier-based PWM block as modulation signals. A slack variable is introduced to the system as minimization objective, defining border for all leg voltages. Optimization procedure minimizes leg voltage maxima, and thus, the maximum utilization of the dc-link voltage is ensured. The theoretical assumptions have been verified by simulations as well as by experiments on laboratory prototype.

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Chavan, Gayatri, and Sridhar S. "Speed Control of Dual Induction Motor Using Five Leg Inverter." E3S Web of Conferences 184 (2020): 01065. http://dx.doi.org/10.1051/e3sconf/202018401065.

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Over the past decade, research efforts have been made to decrease the number of power electronic devices needed in multi-motor drive systems in order to condense the overall complication and cost of the drive. This paper proposes speed control for a dual three-phase induction motor system driven by five-leg voltage source inverter (FL-VSI) which is used in industrial manufacturing processes. Industrial applications frequently need a number of variable speed electric drives. This technique uses five-leg inverter instead of using conventional two three phase inverters. In the majority of cases, these multi-motor drive systems need independent control of individual motors. It is shown recently that it is possible to separately control two three-phase induction machines supplied through a five-leg voltage source inverter, with one inverter leg being common to both machines. The entire performance of the speed control for the five leg voltage source inverter fed dual-motor drive system is investigated using MATLAB/SIMULINK software.

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Mohammad, Arif Khan, and Kumar Gupta Shailesh. "Simulation study of pulse width modulation schemes for three-phase impedance source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1478–85. https://doi.org/10.11591/ijpeds.v13.i3.pp1478-1485.

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To avoid a short circuit of the input direct current (DC). source, a 3-phase inverter cannot run two switches in the same leg at a time, and it always operates in buck mode, with the output voltage being less than the input voltage. The Impedance source inverter features a feature that allows both switches in one leg to operate at the same time, and it can operate in buck/boost mode, which means the output voltage can be greater than the input voltage depending on the shoot-through time. In the literature, there are a few pulse width modulation (PWM) techniques for Impedance source inverter control. This research includes a simulation study as well as an examination of existing PWM schemes in the literature, as well as a proposal for TESVPWM for inverters. The inverter performance has evaluated using total harmonic distortion and fundamental components, validating by simulation findings.

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Khan, Mohammad Arif, and Shailesh Kumar Gupta. "Simulation study of pulse width modulation schemes for three-phase impedance source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1478. http://dx.doi.org/10.11591/ijpeds.v13.i3.pp1478-1485.

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To avoid a short circuit of the input direct current (DC). source, a 3-phase inverter cannot run two switches in the same leg at a time, and it always operates in buck mode, with the output voltage being less than the input voltage. The Impedance source inverter features a feature that allows both switches in one leg to operate at the same time, and it can operate in buck/boost mode, which means the output voltage can be greater than the input voltage depending on the shoot-through time. In the literature, there are a few pulse width modulation (PWM) techniques for Impedance source inverter control. This research includes a simulation study as well as an examination of existing PWM schemes in the literature, as well as a proposal for TESVPWM for inverters. The inverter performance has evaluated using total harmonic distortion and fundamental components, validating by simulation findings.

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Bhattar, Chandrakant L., and Vilas N. Ghate. "A New Control Algorithm for Three-Phase, Four-Wire Unified Power Quality Conditioner (UPQC) in Distributing Systems." Advanced Materials Research 433-440 (January 2012): 6731–36. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6731.

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This paper presents the new control algorithm for three-phase, four-wire distributing system using unified power quality conditioner (UPQC). The UPQC, a combination of series and shunt active filter (AF) with common dc link, is one of the best solution towards the compensation of voltage sag, swell problems and also compensate voltage flicker/imbalance, reactive power, negative sequence current and maintain zero voltage regulation (ZVR) at the point of common coupling (PCC) on distribution system. The series AF is seen by using a three-phase, three leg voltage source inverter (VSI) and the shunt AF is of a three-phase, four leg voltage source inverter (VSI). The proposed model of the UPQC is developed in the MATLAB/SIMULINK environment and the simulation results prove the power quality improvement in the system.

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Marco, di Benedetto, Tang Mi, Lidozzi Alessandro, Solero Luca, Formentini Andrea, and Zannchetta Pericle. "Resonant and a new disturbance-observer combined control for off-grid voltage source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 223–36. https://doi.org/10.11591/ijpeds.v13.i1.pp223-236.

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A new control strategy that combines the resonant controller and the repetitive-controller based on the disturbance-observer (RSCDO) for off grid four-leg voltage source inverter (VSI) has been presented in this paper. The aim of the new controller is to regulate the inverter output voltage, reducing as much as possible the voltage total harmonic distortion (THDv) in every load condition. The resonant controller allows to adjust the voltage at the fundamental harmonic, while the repetitive observer is able to compensate the voltage distortions due to inverter nonlinearity. The proposed strategy has been at first validated by means of simulation results performed in MATLAB/Simulink environment. Then, the new control strategy has been implemented in field-programmable gate array (FPGA) using LabView environmental and experimental results are performed on the 40 kVA three-phase 4-leg VSI prototype.

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ÖZDEMİR, Ayhan, and Zekiye ERDEM. "Optimal digital control of a three-phase four-leg voltage source inverter." TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES 24 (2016): 2220–38. http://dx.doi.org/10.3906/elk-1310-102.

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SINCHUK, Igor, and Maryna KOTIAKOVA. "STUDY OF NON-SYMMETRICAL MODES OF THREE-PHASE FOUR-WIRE NETWORKS WITH DISTRIBUTED GENERATION." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 233–37. http://dx.doi.org/10.31891/2307-5732-2022-313-5-233-237.

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The use of distributed generation electric energy sources allows efficient use of energy resources, including available renewable energy sources, contributes to the reduction of harmful emissions during traditional electric energy generation, improves the quality of electric energy for consumers and reduces overloading of transmission lines. Meanwhile, if the load supplied by the source of distributed generation is asymmetrical, then the voltage at the zero point of the inverter interface feeding the neutral conductor can deviate quite noticeably from the set level. The easiest way to provide a neutral point for connecting the neutral conductor is to use two capacitors with balancing resistors connected in parallel to them, that is, to create a zero voltage by dividing the total voltage of the direct current link in half. Circuits with voltage separation in the direct current circuit are widely used in electric drives with three-level energy converters, since in this case there is no need to connect the zero point of the direction to the load, and the main purpose of this electrical circuit is to obtain equal halves of the total voltage in the direct current circuit. This will lead to asymmetry of the output voltage, that is, to a decrease in its quality, the presence of significant constant components in alternating voltages, as well as to the flow of a significant current in the neutral conductor. In this regard, a three-dimensional space-vector pulse-width modulation method was proposed for controlling a four-arm inverter, which differs from the existing ones by the possibility of minimizing the components of negative and zero-sequence voltages in networks with distributed generation with parallel connection of three- and four-arm inverters . To develop approaches to control the inverters of such systems, it is necessary to obtain analytical dependencies that describe the flow of active and reactive power between inverters depending on the parameters of their generated output voltages.

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S, Renukadevi, and Rathinakumar M. "Comparative Study of Various Adjustable Speed Drives During Voltage Sag." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1393. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1393-1401.

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This Paper compares the sensitivity of various adjustable speed drives to voltage sag for the process control applications. Three phase voltage sag of type B caused due to SLG fault is considered and four topologies of ASD’s are compared in this paper. The comparison is done especially in speed, voltage, current and torque of the ASDs. Diode rectifier without z source inverter, diode rectifier with z source inverter , single phase two leg Vienna rectifier and single phase neutral linked Vienna with z source inverter are compared and the best one is highlighted. The circuits of various ASD’s are simulated using Matlab /Simulink.

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Hurde, Yogeeta, and Nandkishor . "Grid Connected Energy System four leg Inverter for DC Voltage and Power Improvement." IJOSTHE 5, no. 4 (2018): 4. http://dx.doi.org/10.24113/ojssports.v5i4.72.

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The first power systems were DG systems designed to meet the needs of local areas.Full load DG applications showed greater benefits in terms of power and performance as well as reducing transmission losses. GDs are very suitable for a specific location and for specific applications because they require a short construction time and require little investment. It is defined on the basis of the size of the plant, which can vary from a few KW to MW (10-50 MW). GD options can be classified as renewable or non-renewable sources from fuel sources. This study deals with a newly-conceived voltage control method for three-phase four-leg voltage source inverters (VSIs) which are being required in autonomous power generating units devoted to supply both three-phase and single-phase electrical loads

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Miveh, Mohammad Reza, Mohd Fadli Rahmat, Mohd Wazir Mustafa, Ali Asghar Ghadimi, and Alireza Rezvani. "An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions." Advances in Power Electronics 2016 (August 29, 2016): 1–14. http://dx.doi.org/10.1155/2016/9123747.

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This paper proposes an improved multiloop control strategy for a three-phase four-leg voltage source inverter (VSI) operating with highly unbalanced loads in an autonomous distribution network. The main objective is to balance the output voltages of the four-leg inverter under unbalanced load conditions. The proposed control strategy consists of a proportional-integral (PI) voltage controller and a proportional current loop in each phase. The voltage controller and the current control loop are, respectively, used to regulate the instantaneous output voltage and generate the pulse width modulation (PWM) voltage command with zero steady-state tracking error and fast transient response. A voltage decoupling feedforward path is also used to enhance the system robustness. Since the outer voltage loop operates in the synchronous reference frame, tuning and stability analysis of the PI controller is far from being straightforward. In order to cope with this challenge, the stationary reference frame equivalent of the voltage controller in the rotating frame is derived. Subsequently, a systematic design based on a frequency response approach is provided. Simulation results are also carried out using the DIgSILENT PowerFactory software to verify the effectiveness of the suggested control strategy.

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Benedetto, Marco di, Mi Tang, Alessandro Lidozzi, Luca Solero, Andrea Formentini, and Pericle Zanchetta. "Resonant and a new disturbance-observer combined control for off-grid voltage source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 223. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp223-236.

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This paper presents a new control strategy based on the combination between the resonant controller and the disturbance-observer (RSCDO) for stand-alone four-leg Voltage Source Inverter (VSI). The aim of the new controller is to regulate the inverter output voltage, reducing as much as possible the voltage Total Harmonic Distortion (THDv) in every load condition. The resonant controller allows to adjust the output voltage fundamental harmonic, whereas the disturbance observer is designed for compensating output voltage harmonics when non-linear loads have to be fed. The proposed control strategy has been tested using a 40 kVA three-phase 4-leg VSI and a dedicated control board, which uses the National Instruments System-on-Module sbRIO-9651. Experimental results demonstrate good behavior of the RSCDO controller to reject the disturbance in the output voltage, as well as a good dynamic response.

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Omar, Riyadh, and Rabee Thejel. "Matlab/Simulink Modeling of Four-leg Voltage Source Inverter With Fundamental Inverter output Voltages Vector Observation." Iraqi Journal for Electrical and Electronic Engineering 10, no. 2 (2014): 107–17. http://dx.doi.org/10.37917/ijeee.10.2.6.

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Four-leg voltage source inverter is an evolution of the three-leg inverter, and was ought about by the need to handle the non-linear and unbalanced loads. In this work Matlab/ Simulink model is presented using space vector modulation technique. Simulation results for worst conditions of unbalanced linear and non-linear loads are obtained. Observation for the continuity of the fundamental inverter output voltages vector in stationary coordinate is detected for better performance. Matlab programs are executed in block functions to perform switching vector selection and space vector switching.

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Zhang, Fanghua, and Yangguang Yan. "Selective Harmonic Elimination PWM Control Scheme on a Three-Phase Four-Leg Voltage Source Inverter." IEEE Transactions on Power Electronics 24, no. 7 (2009): 1682–89. http://dx.doi.org/10.1109/tpel.2009.2014378.

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Hasanzad, Fardin, Hasan Rastegar, and Mohammad Pichan. "A three-dimensional active zero state PWM for common-mode voltage reduction of a three-phase four-leg voltage-source inverter." World Journal of Engineering 15, no. 5 (2018): 592–603. http://dx.doi.org/10.1108/wje-12-2017-0423.

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Purpose This paper aims to investigate the common-mode voltage (CMV) issue of a three-phase four-leg voltage-source inverter. A new space vector modulation method, named as three-dimensional active zero state Pulse-width modulation (PWM) (3-D AZSPWM), is proposed to reduce the CMV level. Design/methodology/approach PWM is a general method to generate the switching signals of the power converters in order to obtain high-quality output voltages. However, the CMV produced by PWM methods has become a serious problem. 3-D AZSPWM is proposed to solve this issue. In 3-D AZSPWM, instead of using zero voltage vectors with high CMV level, appropriate complementary non-zero vectors are introduced to synthesize reference vector. The proposed method is classified into four types of AZSPWM1(a), AZSPWM1(b), AZSPWM2(a) and AZSPWM2(b) based on different complementary vectors chosen for each type. An extend software simulation using MATLAB/Simulink is performed to verify the superior performance of the proposed methods. Findings Compared to other reduced CMV methods, the proposed method not only reduces the CMV but also retains the positive characteristics of the three-dimensional classical space vector PWM (3-D CSVPWM). Originality/value The proposed method does not suffer from linear modulation region limitation and also does not impose additional switching loss. Furthermore, calculated output voltage harmonic distortion factor illuminates acceptable quality of output voltage produced by the proposed method.

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T., D. Dongale1 D. A. Kulkarni2 M. D. Uplane 3. "HARMONICS ANALYSIS OF FOUR SWITCH THREE PHASE INVERTER." International Journal of Information Technology, Modeling and Computing (IJITMC) 1, November (2018): 01–07. https://doi.org/10.5281/zenodo.1421496.

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In the viewpoint of reliability implication and cost effectiveness of three phase inverter, there should be less device count in inverter topology and fewer losses in the semiconductor switches. The earlier reported less device count topology by many research groups are facing the problem of Total Harmonic Distortion (THD). The imperfect design value of DC link capacitor is the main reason of Harmonic Distortion (THD) problem. The ripple in the dc link voltages of Voltage Source Inverter (VSI) is leads to additional harmonics distortion. This paper present the simulative view of minimization of the harmonic reduction in proposed topology using improved DC link capacitor. The said approach is verified using PSIM (Power Simulator) software

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Dobroskok, Nikita A., Anastasiia D. Stotckaia, Ruslan M. Migranov, et al. "Investigation of bidirectional three-phase four-leg converter with LCL filter." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 2 (2024): 1091–104. https://doi.org/10.11591/ijpeds.v15.i2.pp1091-1104.

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A three-phase four-leg bidirectional power converter used as an input stage of an energy storage system using the inductance (L), capacitance (C), and inductance (L) or LCL filter on the grid side is considered. The article provides a variant of the three-phase four-leg bidirectional converter control system implementation based on 3D space vector pulse-width modulation and per-phase voltage control. A brief analysis of the applied control algorithms of the three-phase four-leg bidirectional converter in inverter and rectifier modes is given. A computer model has been built to investigate the operating modes of the converters of the designated class with both balanced and unbalanced load. Studies were carried out by computer modeling methods in order to optimize the parameters of the LCL filter on the grid side with bidirectional energy exchange. Optimal LCL filter parameters and modulation frequencies are determined for the developed converter, providing acceptable quality indicators when operating in bidirectional mode.

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Zhang, Min, David J. Atkinson, Bing Ji, Matthew Armstrong, and Mingyao Ma. "A Near-State Three-Dimensional Space Vector Modulation for a Three-Phase Four-Leg Voltage Source Inverter." IEEE Transactions on Power Electronics 29, no. 11 (2014): 5715–26. http://dx.doi.org/10.1109/tpel.2013.2297205.

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Prasad, S. Guru, K. S. Srikanth, and B. V. Rajanna. "Advanced Active Power Filter Performance for Grid Integrated Hybrid Renewable Power Generation Systems." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 1 (2018): 60. http://dx.doi.org/10.11591/ijeecs.v11.i1.pp60-73.

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An active power filter implemented with a four leg voltage-source inverter using a predictive control scheme is presented. The use of a four leg voltage-source inverter allows the compensation of current harmonic components, as well as unbalanced current generated by single-phase nonlinear loads. A detailed yet simple mathematical model of the active power filter, including the effect of the equivalent power system impedance, is derived and used to design the predictive control algorithm. The compensation performance of the proposed active power filter and the associated control scheme under steady state and transient operating conditions is demonstrated through simulations and experimental results.

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Luo, Yixiao, Chunhua Liu, Feng Yu, and Christopher H. T. Lee. "Design and Evaluation of an Efficient Three-Phase Four-Leg Voltage Source Inverter with Reduced IGBTs." Energies 10, no. 4 (2017): 530. http://dx.doi.org/10.3390/en10040530.

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Jena, Kasinath, Krishna Kumar Gupta, Pallavee Bhatnagar, et al. "Single-source three-phase switched-capacitor-based MLI." Power Electronics and Drives 7, no. 1 (2022): 197–209. http://dx.doi.org/10.2478/pead-2022-0015.

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Abstract This article proposes a novel three-phase inverter based on the concept of switched capacitors (SCs), which uses a single DC source. A three-phase, seven-level line-to-line output voltage waveform is synthesised by the proposed topology, which includes eight switches, two capacitors, and one diode per phase leg. The proposed topology offers advantages in terms of inherent voltage gain, lower voltage stresses on power switches, and a reduced number of switching components. Additionally, the switched capacitors are self-balanced, thereby eliminating the need for a separate balancing circuit. The proposed structure and its operating principle, the self-balancing mechanism of the capacitors, and the control strategy are all thoroughly explained in the article. The proposed topology has also been compared with some recent SC topologies. Lastly, the proposed topology has been shown to be feasible through simulation and experimentation.

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Hamza, Amar, Sara Altahir, and Xiangwu Yan. "Synchronverter Control for Parallel Operation of Cascaded H-Bridge Inverter." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 1 (2016): 107. http://dx.doi.org/10.11591/ijeecs.v2.i1.pp107-114.

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A 21-levels cascaded H-bridge multilevel inverter topology based on three-phase voltage source inverter has been proposed as a superior replacement for conventional two-level in high voltage applications. In this work we have presented the usage of the new technique called virtual synchronous generator based synchronverter model to operate the multilevel inverter as synchronous generator, and to share active and reactive power automatically in case of parallel operated inverters of the same type. Carrier-based PWM is used to control each phase leg of the cascaded H-bridge multilevel inverter. This carrier-based PWM scheme is derived from the carrier phase disposition pulse width modulation strategy. By aid of MATLAB/Simulink package a simulation experiment is established to verify the performance of the proposed technique.

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Haval, Sardar Kamil, Mat Said Dalila, Wazir Mustafa Mohd, Reza Miveh Mohammad, and Ahmad Nasarudin. "Low-voltage ride-through for a three-phase four-leg photovoltaic system using SRFPI control strategy." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 3 (2019): 1524–30. https://doi.org/10.11591/ijece.v9i3.pp1524-1530.

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With the innovative progresses in power electronics in recent years, photovoltaic (PV) systems emerged as one of the promising sources for electricity generation at the distribution network. Nonetheless, connection of PV power plants to the utility grid under abnormal conditions has become a significant issue and novel grid codes should be recommend. The low-voltage ride-through (LVRT) capability is one of the challenges faced by the integration of PV power stations into electrical grid under abnormal conditions. This work firstly provides a discussion on recent control schemes for PV power plants to enhance the LVRT capabilities. Next, a control scheme for a three-phase four-leg grid-connected PV inverter under unbalanced grid fault conditions using synchronous reference frame proportional integral (SRFPI) controller is proposed. Simulation studies are performed to investigate the influence of the control strategy on the PV inverter.

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Dangeam, Sirichai. "Three-Phase Inverter with Direct Torque Control for a Brushless DC Motor." ECTI Transactions on Electrical Engineering, Electronics, and Communications 20, no. 1 (2022): 133–42. http://dx.doi.org/10.37936/ecti-eec.2022201.246118.

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This paper presents the implementation of a three-leg voltage source inverter fed by a brushless DC motor. The open-loop speed control with direct torque is employed in this motor. The rotation of the motor is controlled by using an optimal voltage vector which is related to the calculation of stator flux and electromechanical torque. The experimental results show that this system has greater capability to reduce spike and ripple on the voltage, current, stator flux, and electromechanical torque than the conventional speed controller which feeds the voltage vector from the hall-effect sensors.

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Souza, Carlos A., Gabriel Maier Cocco, Robinson F. De Camargo, Fábio E. Bisogno, and Martin Wolter. "OSV-MPC for Harmonic and Zero-Sequence Compensation in Four-Wire Off-Grid Microgeneration Systems Based on SEIG." Eletrônica de Potência 29 (December 17, 2024): e202458. https://doi.org/10.18618/rep.e202458.

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This paper proposes a finite control set model predictive control (FCS-MPC) strategy to address voltage regulation in isolated four-wire microgeneration systems based on self-excited induction generators. The FCS-MPC approach enables a simpler and more functional imbalance controller design. The controller determines the optimal switching vector through a cost function that employs a weighting factor for the different control variables. It effectively tracks distorted current references and prevents voltage imbalance, even in a system without frequency regulation. The employed inverter is a four-leg voltage source inverter, also known as a distribution static synchronous compensator, which provides the necessary reactive power and compensates for harmonic content along with the zero-sequence component, ensuring balanced three-phase voltages at the point of common coupling, even with unbalanced loads. The proposed control leverages the instantaneous power theory for synchronization, thereby replacing methods such as the phase-locked loop. Experimental results validate the effectiveness of the proposed control approach and assess the performance of the system in accordance with power quality standards.

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Kim, Soo-eon, So-Young Park, and Sangshin Kwak. "Simplified Model Predictive Control Method for Three-Phase Four-Leg Voltage Source Inverters." Journal of Power Electronics 16, no. 6 (2016): 2231–42. http://dx.doi.org/10.6113/jpe.2016.16.6.2231.

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Dar’enkov, Andrey, Andrey Kurkin, Anton Sluzov, Ivan Berdnikov, Anton Khramov, and Andrey Shalukho. "Research into a Method of Forming Neutral Point Voltage in a Three-Phase Four-Wire Voltage Inverter." Energies 16, no. 15 (2023): 5739. http://dx.doi.org/10.3390/en16155739.

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Three-phase four-wire voltage inverters are commonly used in energy complexes based on distributed generation sources (solar panels, wind power plants, hydrogen fuel cells) and accumulator batteries. They allow to power loads, including single-phase ones, which require neutral point connection. In these cases, phase voltage formed by spatial pulse-width modulation (PWM) methods considerably differs from sinusoidal waves and has high total harmonic distortions of voltage and current curves. This article is devoted to research into the authors’ control method of a three-phase four-wire inverter, allowing for the rectification of the form of phase voltage supplying the load when applying the most common PWM (SVPWM, DPWMMIN, DPWMMAX, GDPWM) methods. The description of the method and its research results by simulation modeling and test bench are presented in the article. The simulation modeling was carried out by the developed Simulink-model of the three-phase four-wire inverter and its control system. The modeling results showed that the method application ensures sinusoidal voltage form when applying any PWM method. At this, THDU was reduced from 21.56% to 4.39%, while THDI was reduced from 21.16% to 1.69%. Experimental tests were carried out by a test bench featuring an uninterruptible power supply source. The authors researched the inverter operation as a component of the test bench under the control of the proposed method to form neutral point voltage. The experimental test results coincided with the simulation modeling results.

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VIJAYAKUMAR, M., and S. VIJAYAN. "THREE-PHASE FOUR-WIRE PV-BASED SERIES HYBRID ACTIVE POWER FILTER FOR POWER QUALITY IMPROVEMENT." Journal of Circuits, Systems and Computers 23, no. 10 (2014): 1450144. http://dx.doi.org/10.1142/s0218126614501448.

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This paper proposes a photovoltaic (PV)-based three-phase four-wire (3P4W) series hybrid active power filter (SHAPF) it comprises of a series active power filter (SAPF) and an LC shunt passive filter. The proposed system eliminates both the current and voltage harmonics and compensates reactive power, neutral current and voltage interruption. A SAPF demands a source of energy for compensating the voltage sag/swell. This system introduces a new topology for SHAPF utilizes the PV with DC–DC boost converter as a source of DC power for SAPF. The compensation current reference evaluation is based on the twin formulation of the vectorial theory of electrical power theorem with fuzzy logic controller (FLC). The PV array/battery managed DC–DC boost converter is employed to step up the voltage to meet the DC bus voltage requirement of the three-leg voltage source inverter (VSI). The foremost benefit of the proposed system is that, it will provide uninterrupted compensation for the whole day. This system utilizes the renewable energy accordingly saves the energy and shares the load during the solar irradiation available. The simulation and experimental studies are carried out to validate the effectiveness of the proposed PV-SHAPF.

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Doan, Van-Tuan, Ki-Young Kim, Woojin Choi, and Dae-Wook Kim. "Design of a Hybrid Controller for the Three-phase Four-leg Voltage-source Inverter with Unbalanced Load." Journal of Power Electronics 17, no. 1 (2017): 181–89. http://dx.doi.org/10.6113/jpe.2017.17.1.181.

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John, Malte, and Axel Mertens. "HARMONIC DOMAIN MODEL OF AN OPEN-LOOP CONTROLLED PWM CONVERTER." Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska 8, no. 2 (2018): 25–29. http://dx.doi.org/10.5604/01.3001.0012.0699.

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An harmonic domain model is developed for open-loop controlled voltage source inverters, which provides the steady-state solution for integer multiples of the fundamental frequency. The convolution of the switching function spectrum with the converter currents and voltages is used to describe the coupling of the AC side and the DC side. The modeling is based on a single phase leg and is extended to a single-phase and a three-phase voltage source inverter, which results in a non-linear algebraic equation system. For open-loop control the switching function is independent of the converter currents and voltages and the model is simplified to a linear equation system. This straightforward and fast model is verified by time domain simulations and experimental results. The modeling can be adapted to systems of coupled converters, which is presented for a back-to-back converter system showing the harmonic interaction of the connected subsystems.

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S., Guru Prasad, S. Srikanth K., and V. Rajanna B. "Advanced Active Power Filter Performance for Grid Integrated Hybrid Renewable Power Generation Systems." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 1 (2018): 60–73. https://doi.org/10.11591/ijeecs.v11.i1.pp60-73.

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An active power filter implemented with a four leg voltage-source inverter using a predictive control scheme is presented. The use of a four leg voltagesource inverter allows the compensation of current harmonic components, as well as unbalanced current generated by single-phase nonlinear loads. A detailed yet simple mathematical model of the active power filter, including the effect of the equivalent power system impedance, is derived and used to design the predictive control algorithm. The compensation performance of the proposed active power filter and the associated control scheme under steady state and transient operating conditions is demonstrated through simulations and experimental results.

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de Rossiter Correa, M. B., C. B. Jacobina, A. M. N. Lima, and E. R. C. da Silva. "A three-leg voltage source inverter for two-phase AC motor drive systems." IEEE Transactions on Power Electronics 17, no. 4 (2002): 517–23. http://dx.doi.org/10.1109/tpel.2002.800984.

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Ghosh, Sudeshna, Pankaj Swarnkar, and D. M. Deshpande. "Comparative Analysis based on Simulation & Design Aspects of Three Phase Four Switch Inverter for Industrial Applications." International Journal of Mathematical, Engineering and Management Sciences 4, no. 6 (2019): 1325–40. http://dx.doi.org/10.33889/ijmems.2019.4.6-104.

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The industrial and utility sector perceives a shift in the paradigm of technology moving with at a very fast pace with the advent of applications like AC drives, FACTS devices, uninterruptible power supplies and many more. These applications are based on power electronics utilizing voltage source inverters (VSIs) dependent technology. The VSI based applications embodies some of the most pertinent and corroborated up gradation to cater the new challenges existing today. The essence of this paper is to draw attention towards benefits and limitations of using four switch three phase voltage source inverter (FSTPVSI) and present a comparative analysis based on technical, economical and performance parameters with six switch three phase voltage source inverter (SSTPVSI) for industrial applications. Finally, after visualizing the wide scope of research in the field of FSTPVSI, an effort has been made to simulate the both FSTPVSI & SSTPVSI using SIMULINK environment. Numerous design aspects based on technical and economic aspects demonstrate that by slightly modifying the pulse width modulation technique comparable results can be achieved from FSTPVSI topology.

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35

Kamil, Haval Sardar, Dalila Mat Said, Mohd Wazir Mustafa, Mohammad Reza Miveh, and Nasarudin Ahmad. "Low-voltage ride-through for a three-phase four-leg photovoltaic system using SRFPI control strategy." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 3 (2019): 1524. http://dx.doi.org/10.11591/ijece.v9i3.pp1524-1530.

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With the innovative progresses in power electronics in recent years, photovoltaic (PV) systems emerged as one of the promising sources for electricity generation at the distribution network. Nonetheless, connection of PV power plants to the utility grid under abnormal conditions has become a significant issue and novel grid codes should be recommend. The low-voltage ride-through (LVRT) capability is one of the challenges faced by the integration of PV power stations into electrical grid under abnormal conditions. This work firstly provides a discussion on recent control schemes for PV power plants to enhance the LVRT capabilities. Next, a control scheme for a three-phase four-leg grid-connected PV inverter under unbalanced grid fault conditions using synchronous reference frame proportional integral (SRFPI) controller is proposed. Simulation studies are performed to investigate the influence of the control strategy on the PV inverter.

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36

Charumit, Chakrapong, and Vijit Kinnares. "Implementation of Space Vector PWM for a Two-Phase Three-leg Voltage Source Inverter." ECTI Transactions on Electrical Engineering, Electronics, and Communications 7, no. 1 (2008): 82–89. http://dx.doi.org/10.37936/ecti-eec.200971.171813.

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This paper proposes the implementation of a carrier-based balanced two-phase output space vector pulsewidth modulation (SVPWM) strategy for a three-leg voltage source inverter (VSI). The principle based on analogue and digital techniques is fully described. The space vector equivalent waveforms and SVPWM patterns are generated by a digital signal processor (DSP). The correctness of the proposed method is verified by calculated and experimental results.

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37

Oleschuk, V. "EVOLUTION AND DISSEMINATION OF SPECIALIZED STRATEGIES, METHODS, AND TECHNIQUES OF SYNCHRONOUS PULSEWUDTH MODULATION FOR CONTROL OF VOLT-AGE SOURCE INVERTERS AND INVERTER-BASED SYSTEMS." Tekhnichna Elektrodynamika 2023, no. 5 (2023): 14–27. http://dx.doi.org/10.15407/techned2023.05.014.

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This publication provides a brief historical overview of the development of methods and techniques of pulsewidth modulation (PWM) for voltage source inverters, published mainly in Ukrainian publishing houses and in Ukrainian periodicals. Accent has been done to review of results of investigation of alternative methods and techniques of synchronous space-vector-based multi-zone PWM for inverters with low switching frequency. In particular, in the mentioned publications, the basic strategies, schemes, and algorithms of synchronous multi-zone modulation have been further developed, modernized, modified, and disseminated in relation to new promising topologies of power conversion systems, including: two-inverter-based electric drives with open-end winding of electrical motor; dual three-phase electric drives of symmetrical and asymmetric types; powerful six-phase systems based on four inverters, and two-inverter-based and three-inverter-based photovoltaic installations with multi-winding transformer. It is shown that the developed schemes and algorithms of synchronous space-vector PWM, applied for control of inverter-based systems, provide continuous synchronization and symmetry of basic voltage waveforms of systems during the whole control range including zone of overmodulation of inverters. It provides minimization of even harmonics and undesirable subharmonics (of the fundamental frequency) in spectra of the basic voltages of systems, leading to reducing of losses in systems and to increasing of its efficiency. Based on a comparative analysis of the integral spectral characteristics of the phase and line voltages of systems, recommendations are formulated for the rational choice of schemes and algorithms of synchronous modulation for the relevant installations, depending on the modes of their operation. References 30, tables 2, figures 25.

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SWAPNA, GOD, PATHAN SHAKIRA, WAGASKAR SONALI, and PARABHANE RUPALI. "QUASI Z-SOURCE NETWORK BASED CONTROL SCHEME FOR FSTP BLDC MOTOR." JournalNX - a Multidisciplinary Peer Reviewed Journal 3, no. 6 (2017): 42–46. https://doi.org/10.5281/zenodo.1421028.

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The paper proposes a novel four switch three phase BLDC motor control scheme which boosts the voltage level, extends the range of speed as well as reduces output torque ripple. The additionally partial circuits of quasi Z-source network and the bridge arm of four-switch inverter constitute the quasi Z-source converter. During the operation of motor, shoot through states are inserted. Then the input voltage of inverter increases and the performance of motor can be markedly improved. The dynamic performance of current is influenced and the speed is limited, for the irregular dc-link voltage utilization in the control of four-switch three-phase (FSTP) BLDC motor. This project presents a novel topology, which combines quasi Z-source converter and FSTP drive circuit. The drawbacks of FSTP BLDC motor are analyzed, the control methods of each mode in quasi Z-source four-switch three-phase (QZFSTP) topology are illustrated. Simulations for QZFSTP BLDC motor were constructed in MATLAB/Simulink circumstance. We can provide an alternate strategy to control BLDC motor by using Four Switch Three Phase inverter. https://journalnx.com/journal-article/20150350

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Botteron, F., R. F. de Camargo, H. L. Hey, J. R. Pinheiro, H. A. Gründling, and H. Pinheiro. "New limiting algorithms for space vector modulated three-phase four-leg voltage source inverters." IEE Proceedings - Electric Power Applications 150, no. 6 (2003): 733. http://dx.doi.org/10.1049/ip-epa:20030913.

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40

MYTSYK, GENNADY S., and Aung Zaw TIN. "A Method for Reducing the Mass of Transfilters in a Multichannel ThreePhase Voltage Source Inverter with PAM." Elektrichestvo 6, no. 6 (2021): 33–43. http://dx.doi.org/10.24160/0013-5380-2021-6-33-43.

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The results from a structural-algorithmic synthesis of three-phase voltage source inverters (3PVSI) based on a three-phase bridge circuit with simple control algorithms are presented. An increased output power is achieved by applying the principle of multichannel energy flow conversion with summing its parts in the output circuit using transfilters (TF). The inverter output voltage has the waveform of a signal with pulse-amplitude modulation (PAM), which features better electromagnetic compatibility in comparison with pulse-width modulation. The output voltage waveform distortion tends to decrease with increasing the number of inverter channels. It is shown that the installed (overall with respect to the fundamental harmonic component) TF apparent power per phase - S*TF (in fractions of the one load phase output power) in its simplest two-channel version (at M=2) is 10%. With the number of channels increased to four, S*TF increases to 16%. To reduce the value of the indicator S*TF, it is proposed to use a new control algorithm of the two-channel inverter version, with which the TF operating frequency increases by 2n times (where n = 1, 2, 3, ... N) while maintaining the same output voltage waveform with PAM. Accordingly, the indicator S*TF decreases by 2n times. In this case, there is no voltage regulation function. To implement the output voltage regulation function for this inverter, an energy-saving control algorithm is used which is characterized by a minimum number of valve switching operations. It is shown that with shifting the TF to operate in the mode with a higher frequency, the indicator S*TF tends to degrade with increasing the control angle α. Based on a study of two alternative TF topologies in 3PVSI with M=4, it is shown that a more efficient solution in terms of S*TF is the version of a four-winding TF on a common (for one load phase) four-core spatial magnetic circuit. The obtained study results open the possibility to develop an extended information and methodological support necessary for system designing of electrical complexes using this class of three-phase voltage source inverters.

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41

Ozdemir, Ayhan, and Zekeriya Ozdemir. "Digital current control of a three‐phase four‐leg voltage source inverter by using p – q – r theory." IET Power Electronics 7, no. 3 (2014): 527–39. http://dx.doi.org/10.1049/iet-pel.2013.0254.

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42

Choi, Jaehyuk, Dong-Hun Lee, and Hyungsoo Mok. "Discontinuous PWM Techniques of Three-Leg Two-Phase Voltage Source Inverter for Sonar System." IEEE Access 8 (2020): 199864–81. http://dx.doi.org/10.1109/access.2020.3032419.

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43

Jena, Kasinath, Dhananjay Kumar, Kavali Janardhan, et al. "A Novel Three-Phase Switched-Capacitor Five-Level Multilevel Inverter with Reduced Components and Self-Balancing Ability." Applied Sciences 13, no. 3 (2023): 1713. http://dx.doi.org/10.3390/app13031713.

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This paper proposes a step-up 3-Ф switched-capacitor multilevel inverter topology with minimal switch count and voltage stresses. The proposed topology is designed to provide five distinct output voltage levels from a single isolated dc source, making it suitable for medium and low-voltage applications. Each leg of the proposed topology contains four switches, one power diode, and a capacitor. The switching signals are also generated using a staircase universal modulation method. As a result, the proposed topology will operate at both low and high switching frequencies. To highlight the proposed topology’s advantages, a comparison of three-phase topologies wasperformed in terms of the switching components, voltage stress, component count per level factor, and cost function withthe recent literature. The topology achieved an efficiency of about 96.7% with dynamic loading, and 75% of the switches experienced half of the peak output voltage (VDC), whereas the remaining switches experienced peak output voltage (2VDC) as voltage stress. The MATLAB/Simulink environment was used to simulate the proposed topology, and a laboratory prototype was also built to verify the inverter’s theoretical justifications and real-time performance.

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44

Oleschuk, Valentin, and Mihai Tirsu. "Methods, Techniques, and Algorithms of Synchronous Multi-Zone Modulation of Signals of Voltage Source Inverters (literature review)." Problems of the Regional Energetics, no. 2(62) (April 2024): 52–74. http://dx.doi.org/10.52254/1857-0070.2024.2-62.06.

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This publication provides a brief overview of the results of research work in the field of developing alternative methods, schemes, and algorithms of synchronous multi-zone modulation of signals of inverters of power conversion systems with reduced switching frequency of power switches. In particular, in the mentioned researches, the basic strategies, schemes, and algorithms of synchronous multi-zone modulation have been fur-ther developed, modernized, modified, and disseminated in relation to new promising topologies of power conversion systems, including: two-inverter-based electric drives with open windings of electrical motor; drive systems based on electric motor with two stator windings; dual three-phase electric drives of symmetrical and asymmetric type; five-phase power conversion systems, powerful six-phase systems based on four inverters, and two-inverter-based and three-inverter-based photovoltaic installations with multi-winding transformer. It is shown that the developed schemes and algorithms of synchronous space-vector modulation applied for control of inverter-based systems provide continuous synchronization and symmetry of the basic voltage waveforms of systems during the whole control range. It provides minimization of even harmonics and undesirable subhar-monics (of the fundamental frequency) in spectra of the basic voltages of systems, leading to reducing of losses in systems and to increasing of its efficiency. Based on a comparative analysis of the integral spectral character-istics of the phase and line voltages of the systems, recommendations are formulated for the rational choice of schemes and algorithms of synchronous modulation for the relevant installations, depending on the modes of their operation.

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45

MYTSYK, GENNADY S., and ZAW HTET HEIN. "A Structural-Algorithmic and Parametric Synthesis of Single-Phase Voltage Source Inverters for Increased Power Capacity." Elektrichestvo 2, no. 2 (2021): 44–53. http://dx.doi.org/10.24160/0013-5380-2021-2-44-53.

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The recent interest of developers of new technology in studying a structural and algorithmic synthesis (SAS) of voltage source inverters (VSI) for solar power plants (SPP) is stemming from a growing need to solve problems in connection with the revealed new possibilities of converting energy flow (from DC to AC) with better energy efficiency by reducing the depth of its pulse modulation. This problem is solved by using more rational structural and algorithmic solutions. It is shown that for SPPs for a capacity of about 1 MW and more, it is more expedient to construct inverters based on the energy flow multichannel conversion principle. Given a limited power capacity of the transistor components, the application of this principle allows the problem to be solved in fact without using an output filter. The output voltage waveform is shaped using the energy flow pulse-amplitude modulation (PAM), and its M parts are summed in the output circuit by out using M winding transfilters (M-TF). The proposed method for carrying out combined SAS of single-phase voltage source inverters with multichannel conversion is considered, which consists in using an N-level single-phase VSI (N-SPVSI) in each of the M channels with the voltage levels optimized in terms of the minimum total harmonic distortion (THD). The resulting voltage of this class of single-phase inverters, designated as MxN-SPVSI, is formed by the corresponding phase shift of the channel voltages followed by summing the channel currents by M-TF. It is shown that the resulting output voltage levels are also close to their values optimized with respect to the minimum of the THD indicator. The results from a comparative analysis of two options — a single-channel 8-level inverter and a four-channel 8-level inverter are given. For the second option, only one intermediate voltage tap in the solar battery is required (instead of seven taps in the first option) along with modern transistor components that are available for practical implementation. In both options, the THD value less than 5% is obtained with almost no need of using an output filter. The presented results provide a certain information and methodological support for system designing of single-phase voltage source inverters as applied to the specific features of solar power plants. Three-phase inverters can be built on the basis of three single-phase inverters with galvanic isolation of the power sources for each phase.

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Miveh, Mohammad Reza, Mohd Fadli Rahmat, Ali Asghar Ghadimi, and Mohd Wazir Mustafa. "Control techniques for three-phase four-leg voltage source inverters in autonomous microgrids: A review." Renewable and Sustainable Energy Reviews 54 (February 2016): 1592–610. http://dx.doi.org/10.1016/j.rser.2015.10.079.

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Jun, Eun-Su, So-young Park, and Sangshin Kwak. "Model Predictive Current Control Method with Improved Performances for Three-Phase Voltage Source Inverters." Electronics 8, no. 6 (2019): 625. http://dx.doi.org/10.3390/electronics8060625.

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In this paper, the model predictive current control (MPCC) method using two vectors has been proposed to control output currents of three-phase voltage source inverters (VSIs) with small current errors and current ripples. Also, the proposed method can reduce switching losses by applying the vector pre-selection technique to the MPCC for the VSI. The VSI generates seven voltage vectors to control the output currents, but the proposed method uses four available voltage vectors with one switch, which are classified by the vector pre-selection method clamping one leg and conducting the largest output current among the three legs to reduce the switching losses. In the proposed method, selecting two future voltage vectors among the four voltage vectors and dividing them in a future sampling period are determined by an optimization process. The proposed method results in the lower total loss, better total harmonic distortion (THD), and smaller current errors than the conventional method with half the sampling period of the proposed method due to the optimal process. Simulation and experimental results of the three-phase VSIs are presented in order to verify the effectiveness of the proposed method.

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Djerioui, Ali, Azeddine Houari, Abdelhakim Saim, et al. "Flatness-Based Grey Wolf Control for Load Voltage Unbalance Mitigation in Three-Phase Four-Leg Voltage Source Inverters." IEEE Transactions on Industry Applications 56, no. 2 (2020): 1869–81. http://dx.doi.org/10.1109/tia.2019.2957966.

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Ms., Rohini. R. Dabhade* Prof. C. Veeresh. "RESOLVEMENT OF POWER QUALITY PROBLEMS BY UNIFIED POWER QUALITY CONDITIONER (UPQC)." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 8 (2016): 63–67. https://doi.org/10.5281/zenodo.59954.

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In this project presents a Design of a Unified Power Quality conditioner (UPQC) connected to three phase four wire system (3P4W). The neutral of series transformer used in the fourth wire for the 3P4W system. The neutral current that may flow toward transformer neutral point is compensated by using a four-leg voltage source inverter topology for shunt part. The series transformer neutral will be at virtual zero potential during all operating conditions. In this simulation we observe the power quality problems such as unbalanced voltage and current, harmonics by connecting non linear load to 3P4W system with Unified Power Quality conditioner. A new control strategy such as unit vector template is used to design the series APF to balance the unbalanced current present in the load currents by expanding the concept of single phase P-Q theory.

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Lazi, Jurifa Mat, Zulkifilie Ibrahim, Md Hairul Nizam Talib, Auzani Jidin, and Ahmad Shukri Abu Hasim. "Non-independent speed control for dual-PMSM drives using a single three-leg VSI." Indonesian Journal of Electrical Engineering and Computer Science 20, no. 3 (2020): 1717–24. https://doi.org/10.11591/ijeecs.v20.i3.pp1717-1724.

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The objective of this article is to analyze the performances of non-independent speed control of dual-pmsm (permanent magnet synchronize motor) drives by a single three-leg voltage source inverter (VSI) using control of mean and differential torque technique. In general, there are two types of control strategies for dual-motor drives. One is master-slave technique and another one is mean control technique. For mean control technique, this study chooses mean and differential approach for the motors parameters and using average value for the voltage space vector. The advantages of dual-motor drives fed by a single inverter topology are, it can decrease the size and cost compared to the dual-motor drives which used by individual inverter, either in industrial or in traction applications. However, by using a single three-phase inverter, the topology only restricted for the same operating conditions which are at the same speed, same parameters and same direction. The dual-motors are dependent (non-independent) on the other motor. It is can only be tested on different load operation. The analysis is focuses on speed and load variation for dual-PMSM drives considering the forward and reverse operations of the motor. This simulation model is modelled using MATLAB-Simulink.

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Journal articles on the topic 'Three-phase four-leg voltage source inverter'

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