Journal articles: 'Switching Frequency Hysteresis Current Controller'

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Mohapatra, Bhabasis, Binod Kumar Sahu, Swagat Pati, Mohit Bajaj, Vojtech Blazek, Lukas Prokop, Stanislav Misak, and Mosleh Alharthi. "Real-Time Validation of a Novel IAOA Technique-Based Offset Hysteresis Band Current Controller for Grid-Tied Photovoltaic System." Energies 15, no. 23 (November 22, 2022): 8790. http://dx.doi.org/10.3390/en15238790.

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Renewable energy sources have power quality and stability issues despite having vast benefits when integrated with the utility grid. High currents and voltages are introduced during the disconnection or injection from or into the power system. Due to excessive inverter switching frequencies, distorted voltage waveforms and high distortions in the output current may be observed. Hence, advancing intelligent and robust optimization techniques along with advanced controllers is the need of the hour. Therefore, this article presents an improved arithmetic optimization algorithm and an offset hysteresis band current controller. Conventional hysteresis band current controllers (CHCCs) offer substantial advantages such as fast dynamic response, over-current, and robustness in response to impedance variations, but they suffer from variable switching frequency. The offset hysteresis band current controller utilizes the zero-crossing time of the current error for calculating the lower/upper hysteresis bands after the measurement of half of the error current period. The duty cycle and hysteresis bands are considered as design variables and are optimally designed by minimizing the current error and the switching frequency. It is observed that the proposed controller yields a minimum average switching frequency of 2.33 kHz and minimum average switching losses of 9.07 W in comparison to other suggested controllers. Results are validated using MATLAB/Simulink environment followed by real-time simulator OPAL-RT 4510.

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Song, Qing Shou. "A Hysteretic Current Controller for Active Power Filter (APF) with Constant Frequency." Advanced Materials Research 460 (February 2012): 308–12. http://dx.doi.org/10.4028/www.scientific.net/amr.460.308.

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In accordance with the advantage of conventional hysteresis current control method, this paper advances a novel control method for APF. In conventional hysteresis current control, the hysteresis band (HB) is fixed and actual compensating current is limited in a fixed HB. Firstly, the connection between HB and switching frequency must be found correctly. Then, the variable hysteresis band current controller is designed according to the connection. Finally, the Matlab simulation results show that the switching frequency of VSI is held nearly constant and the proposed controller can track reference current well[1]. The problems of increasing switching losses and audible noise which happened in high-frequency state can be resolved in conventional hysteresis current control.

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Xia, Yang, Hai Liang Tao, and Ning Zhang. "An Adaptive Hysteresis Band Controller for Single Phase PV Inverters." Advanced Materials Research 354-355 (October 2011): 1333–37. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.1333.

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Hysteresis current controllers are widely used in PV inverters. The main drawback of conventional hysteresis current control is that the switching frequency is variable, as the hysteresis band is fixed. In this paper an adaptive band hysteresis control algorithm with no derivative calculation is presented. As it will be shown, this algorithm can limit the switching frequency variation within a small range and the algorithm itself is simple and easy to be implemented. The performance of this algorithm, together with the one [10] and conventional hysteresis control has been evaluated by means of simulations performed with PSIM and SIMULINK. Simulation results show the effectiveness of the suggested hysteresis current controller.

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Bu, Wen Shao, Lei Lei Xu, Xian Bo Wang, and Xin Win Niu. "Double-Hysteresis Current Control Strategy of PWM Rectifier." Applied Mechanics and Materials 433-435 (October 2013): 1037–44. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.1037.

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to hold the merits of the traditional hysteresis controller, and at the same time, hold back the change of switching frequency and reduce the switching power loss in hysteresis control of PWM rectifier, based on the relationship between line currents and switching status, an improved algorithm of double-hysteresis current control method for three-phase voltage-type PWM converter was proposed. In the strategy, the position of reference voltage vector can be detected by double hysteresis, PLL circuit can detect the output of switching states. The proposed algorithms not only hold the merits of traditional hysteresis, such as quick current response and current limited capacity, but also, it can overcome the drawback of non-fixed switching frequency of traditional hysteresis. The algorithm has been simulated and verified by MATLAB/simulink platform, and the system operates stably.

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Ching-Tsai Pan and Ting-Yu Chang. "An improved hysteresis current controller for reducing switching frequency." IEEE Transactions on Power Electronics 9, no. 1 (January 1994): 97–104. http://dx.doi.org/10.1109/63.285499.

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Sankar, R. S. Ravi, A. Venkatesh, and Deepika Kollipara. "Adaptive hysteresis band current control of grid connected PV inverter." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 4 (August 1, 2021): 2856. http://dx.doi.org/10.11591/ijece.v11i4.pp2856-2863.

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In this paper, adaptive hysteresis band current controller is implemented to control the current injected into the grid. Initially it was implemented by B.K Bose for control of the machine drive. Now it is implemented for the grid connected PV inverter, to control the current injected into Grid. It is well suitable for the distribution generation. The adaptive hysteresis band controller changes the bandwidth based on the modulating frequency, supply voltage, input DC voltage and slope of the reference current. Consequently, the controller generates pulses to the inverter. It is advantageous over the conventional hysteresis controller, as the switching frequency is maintained almost constant. Thereby quality of grid current is also improved. It is verified in time domain analysis of simulation using MATLAB.

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Naik, Amiya, Anup Kumar Panda, and Sanjeeb Kumar Kar. "Improving the Dynamic Response during Field Weakening Control of IPMSM Drive System using Adaptive Hysteresis Current Control Technique." International Journal of Emerging Electric Power Systems 17, no. 3 (June 1, 2016): 235–49. http://dx.doi.org/10.1515/ijeeps-2015-0078.

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Abstract This paper presents the control of IPMSM drive in flux weakening region, for high speed applications. An adaptive hysteresis band current controller has been designed and implemented in this work to overcome the drawbacks which are present in case of conventional hysteresis band current controllers such as: high torque ripple, more current error, large variation in switching frequency etc. The proposed current controller is a hysteresis controller in which the hysteresis band is programmed as a function of variation of motor speed and load current. Any variation in those parameters causes an appropriate change in the band which in turns reduces the torque ripple as well as current error of the machine. The proposed scheme is modeled and tested in the MATLAB-Simulink environment for the effectiveness of the study. Further, the result is validated experimentally by using TMS320F2812 digital signal processor.

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Malathi, V., Dr S. Sentamil Selvan, and Dr S. Meikandasivam. "Digital Hysteresis Control Algorithm for Switched Inductor Quasi Z-Source Inverter with Constant Switching Frequency." International Journal of Electrical and Electronics Research 10, no. 3 (September 30, 2022): 572–78. http://dx.doi.org/10.37391/ijeer.100327.

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In this paper, a digital hysteresis current limit controller is developed for Switched Inductor Quasi Z-Source Inverter (SLQZSI). Traditional methods like hysteresis current fixed limit and adjustable hysteresis current limit techniques changes the hysteresis bandwidth in accordance to modulating frequency and gradient of reference current. The operating shifting frequency of typical approaches oscillates and crosses the intended steady shifting frequency under noise. It leads to undesirable heavy interference between the phases and more power loss. In the planned digital hysteresis current limit technique, the hysteresis current limit is calculated by resolving the optimization problem. In the proposed approach the operating shifting frequency is kept same or inferior to the intended steady shifting frequency even under noise. Hence the planned digital hysteresis current limit algorithm maintains the output current steady and power loss is minimized which is not promised by the conservative techniques. To compare different control strategies in terms of nature of operating switching frequency and harmonic performance simulations are built on the MATLAB/SIMULINK

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Devaraj, D., S. Sakthivel, and K. Punitha. "Fuzzy Adaptive Hysteresis Band Current Controller for Solar Photovoltaic Inverter." Advanced Materials Research 403-408 (November 2011): 4991–99. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4991.

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Photovoltaic inverters are important solar energy application. This paper presents a novel Fuzzy Adaptive Hysteresis Current Controller to control the inverter, used in the non-linear time-variant solar photovoltaic cell. The proposed controller has the advantages of both fuzzy as well as adaptive controller. It is capable of reducing the total harmonic distortion and to provide acceptable switching frequency. The mathematical model of Photovoltaic array is developed using the Newton’s method using the parameter obtained from a commercial photovoltaic data sheet under variable weather conditions, in which the effect of irradiance and temperature are considered. The modeled Photovoltaic array is interfaced with DC-DC boost converter, AC-DC inverter and load. A DC-DC boost converter is used to step up the input DC voltage of the Photovoltaic array while the DC-AC single-phase inverter converts the input DC comes from boost converter into AC. The performance of the proposed controller of inverter is evaluated through MATLAB-Simulation. Unlike standard adaptive controller designs, this adaptive fuzzy controller does not require an explicit mathematical model of the system. The results obtained with the proposed algorithm are compared with those obtained when using conventional fixed hysteresis current controller for single-phase photovoltaic inverter in terms of THD and switching frequency.

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Orts-Grau, Salvador, Pedro Balaguer-Herrero, Jose Carlos Alfonso-Gil, Camilo I. Martínez-Márquez, Francisco J. Gimeno-Sales, and Salvador Seguí-Chilet. "One-Cycle Zero-Integral-Error Current Control for Shunt Active Power Filters." Electronics 9, no. 12 (November 26, 2020): 2008. http://dx.doi.org/10.3390/electronics9122008.

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Current control has, for decades, been one of the more challenging research fields in the development of power converters. Simple and robust nonlinear methods like hysteresis or sigma-delta controllers have been commonly used, while sophisticated linear controllers based on classical control theory have been developed for PWM-based converters. The one-cycle current control technique is a nonlinear technique based on cycle-by-cycle calculation of the ON time of the converter switches for the next switching period. This kind of controller requires accurate measurement of voltages and currents in order achieve a precise current tracking. These techniques have been frequently used in the control of power converters generating low-frequency currents, where the reference varies slowly compared with the switching frequency. Its application is not so common in active power filter current controllers due to the fast variation of the references that demands not only accurate measurements but also high-speed computing. This paper proposes a novel one-cycle digital current controller based on the minimization of the integral error of the current. Its application in a three-leg four-wire shunt active power filter is presented, including a stability analysis considering the switching pattern selection. Furthermore, simulated and experimental results are presented to validate the proposed controller.

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Černelič, Jernej, Robert Brezovnik, Primož Sukič, and Martin Petrun. "Eliminating short switching cycles when using hysteresis control of resistance spot welding systems." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (May 2, 2017): 791–803. http://dx.doi.org/10.1108/compel-09-2016-0429.

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Purpose This paper aims to present two hysteresis-control algorithms designed for medium-frequency, direct-current, resistance-spot-welding (MFDC RSW) systems. The first proposed control algorithm (MSCHC) eliminates the short switching cycles that can occur when using the existing hysteresis-control algorithms. This control minimises the number of switching cycles that are needed to generate the selected welding current. The welding-current ripple can be high when using this control algorithm. Therefore, a second algorithm (HCRR) is presented that reduces the welding-current ripple by half. Design/methodology/approach The proposed hysteresis controllers consist of the transformer’s magnetic-flux-density hysteresis regulator and a welding-current hysteresis regulator. Therefore, the welding current must be measured and the saturation of the iron core must be detected. The proposed hysteresis controller supplies the inverter with the signals needed to generate the supply voltage for the RSW transformer, which then generates the selected welding current. Findings The proposed MSCHC algorithm produces the smallest possible number of switching cycles needed to generate the selected welding current. The high welding-current ripple can be reduced if the number of switching cycles is increased. The observed number of switching cycles and the welding-current ripple change if the welding resistance and/or inductance change. Originality/value The number of switching cycles can be minimised when using the first proposed control algorithm (MSCHC), and so the switching power losses can be minimised. If the welding-current ripple produced by the first control algorithm is unacceptable, the second control algorithm (HCRR) can reduce it by increasing the number of switching cycles.

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Hamdi, R., A. Hadri Hamida, and O. Bennis. "On modeling and real-time simulation of a robust adaptive controller applied to a multicellular power converter." Electrical Engineering & Electromechanics, no. 6 (November 7, 2022): 48–52. http://dx.doi.org/10.20998/2074-272x.2022.6.08.

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Introduction. This paper describes the simulation and the robustness assessment of a DC-DC power converter designed to interface a dual-battery conversion system. The adopted converter is a Buck unidirectional and non-isolated converter, composed of three cells interconnected in parallel and operating in continuous conduction mode. Purpose. In order to address the growing challenges of high switching frequencies, a more stable, efficient, and fixed-frequency-operating power system is desired. Originality. Conventional sliding mode controller suffers from high-frequency oscillation caused by practical limitations of system components and switching frequency variation. So, we have explored a soft-switching technology to deal with interface problems and switching losses, and we developed a procedure to choose the high-pass filter parameters in a sliding mode-controlled multicell converter. Methods. We suggest that the sliding mode is controlled by hysteresis bands as the excesses of the band. This delay in state exchanges gives a signal to control the switching frequency of the converter, which, in turn, produces a controlled trajectory. We are seeking an adaptive current control solution to address this issue and adapt a variable-bandwidth of the hysteresis modulation to mitigate nonlinearity in conventional sliding mode control, which struggles to set the switching frequency. Chatter problems are therefore avoided. A boundary layer-based control scheme allows multicell converters to operate with a fixed-switching-frequency. Practical value. Simulation studies in the MATLAB / Simulink environment are performed to analyze system performance and assess its robustness and stability. Thus, our converter is more efficient and able to cope with parametric variation.

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Mizuno, Takeshi, and Yuji Ishino. "Development of a Hysteresis Amplifier with an H-bridge Drive for Self-Sensing Magnetic Suspension." Journal of Robotics and Mechatronics 12, no. 3 (June 20, 2000): 218–23. http://dx.doi.org/10.20965/jrm.2000.p0218.

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A switching amplifier with an H-bridge drive was developed for self-sensing magnetic suspension. In this amplifier, switching times are controlled by a current comparator with a small hysteresis. The amplifier implemented with such hysteresis control has asynchronous characteristics so that the switching rate depends on the load impedance. When the hysteresis amplifier is used for magnetic suspension, the gap between the suspended object and the electromagnet can be estimated from the switching frequency. Since the Hbridge reverses the polarity of the voltage applied to the coil alternatively, the switching frequency is insensitive to the value of current command to the amplifier. The F/V conversion of the switching signal was used for feedback control with the result that self-sensing suspension was achieved.

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Kang, B. J., and C. M. Liaw. "Robust hysteresis current-controlled PWM scheme with fixed switching frequency." IEE Proceedings - Electric Power Applications 148, no. 6 (2001): 503. http://dx.doi.org/10.1049/ip-epa:20010608.

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Balta, Güven, Necmi Altin, and Adel Nasiri. "Interval Type-2 Fuzzy-Logic-Based Constant Switching Frequency Control of a Sliding-Mode-Controlled DC–DC Boost Converter." Applied Sciences 13, no. 5 (March 3, 2023): 3239. http://dx.doi.org/10.3390/app13053239.

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The inherent unlimited high switching frequency of the sliding mode controller (SMC) is limited by practical constraints of the hysteresis modulation (HM) technique. The inductor current and output voltage of a converter can be regulated using a combination of HM-SMC. However, HM-SMC results in a variable switching frequency operation, which is not preferred due to Electromagnetic Interference (EMI) issues. In this paper, an interval fuzzy controller is designed and developed as a solution to enable HM-SMC. In addition, a robust sliding surface is proposed, which provides an improved dynamic response. The two proposed controllers’ compatibility with one another has been tested via experiments such as a step change in input voltage, load resistance variation, and finally, a step change in output voltage reference value. The test results validate that while the interval type-2 fuzzy maintains a constant switching frequency with acceptable dynamic responses, it successfully regulates the state variables of the system. A comparison of the performance of the proposed control method with existing techniques in the literature is presented.

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Fatiha, Mekri, and Oum El Fadhel Loubaba Bekri. "Fuzzy hysteresis current control of five phase permanent magnet motor under open-circuit faults." International Journal of Engineering & Technology 7, no. 2.28 (May 16, 2018): 369. http://dx.doi.org/10.14419/ijet.v7i2.28.13213.

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This paper presents a new current controller of a PWM of multiphase PM machines with a fuzzy logic band. With this kind of system it is possible to determine optimal currents references which maximize the torque density of the system when one or two phases are open circuited. We propose in this paper to combine this optimal reference current generation with fuzzy hysteresis control band. This solution allows a good tracking of these unconventional reference currents with a fixed switching frequency for the VSI. The study carried on simulation via software MatLab/Simulink.

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Aljafari, Belqasem, Kanagavel Rameshkumar, Vairavasundaram Indragandhi, and Selvamathi Ramachandran. "A Novel Single-Phase Shunt Active Power Filter with a Cost Function Based Model Predictive Current Control Technique." Energies 15, no. 13 (June 21, 2022): 4531. http://dx.doi.org/10.3390/en15134531.

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For a single-phase Shunt Active Power Filter (SAPF) with a two-step prediction, this research presents a modified current control based on a Model Predictive Current Control (MPCC) technique. An H-bridge inverter, a DC link capacitor, and a filter inductor comprise the single-phase SAPF topology. The SAPF reference current is computed using the DC-link capacitor voltage regulation-based PI control technique. The weighting factor-based model predictive current controller is used to track the current commands. The essential dynamic index for evaluating waveform quality is the Total Harmonic Distortion (THD) of a source current and switching frequency of power switches. The conventional methods the THD and switching frequency are not considered as an objective function, so that a weighting factor-based MPCC technique is used to obtain a good compromise between the THD of the source current and switching frequency of power switches. Through MATLAB simulation and experimentation with the Cyclone-IV EP4CE30F484 FPGA board, the usefulness of the proposed control technique is proven. As compared with hysteresis, predictive PWM, and conventional MPCC control methods, the cost function-based MPCC algorithm provides a lower switching frequency (13.4 kHz) with an optimal source current THD value.

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Saleem, Mohamed Muftah. "New Method to Harmonic Isolation Based on High Selectivity Filter to Control of Shunt Active Filter with Experimental Validation Using DSPACE System." Applied Mechanics and Materials 666 (October 2014): 53–58. http://dx.doi.org/10.4028/www.scientific.net/amm.666.53.

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This paper presents a new control method of a parallel active power filters based on improved harmonic isolation with hardware implementation. The harmonic isolator is based on High Selectivity Filters (it can be tuned at any frequency) and the current control technique consists in a modulated hysteresis current controller. This active filter is intended for harmonic compensation of a diode rectifier feeding a RL load. The study of the active filter control is divided in two parts. The first part deals with the harmonic isolator which generates the harmonic reference currents and is implemented into a DSPACE DS1104 prototyping card. The second part focuses on the generation of the switching pattern of the IGBTs of the inverter by the modulated hysteresis current controller, implemented into an analogue card. The use of High Selectivity Filters instead of classical extraction filters allows extracting directly the voltage and current fundamental components in the α-β axis at high performances. The effectiveness of the new proposed method is verified by computer simulation and by experimental study.

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Shehata, Mariam K., Hossam Eldin Mostafa Attia, Basem E. Elnaghi, and Nagwa F. Ibrahim. "Power factor correction AC-DC boost converter using PI-hysteresis current control." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 3 (September 1, 2023): 1597. http://dx.doi.org/10.11591/ijpeds.v14.i3.pp1597-1603.

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The AC line input voltage is frequently rectified by single-phase diode rectifiers and filtered using sizable electrolytic capacitors. The capacitor draws current in brief pulses, so harmonics distort the line current, resulting in high losses. Harmonics and line current distortions harm the unity power factor and efficiency. This article adopts a simple single-stage AC-DC converter with a high-power factor and low total harmonic distortion. The PI hysteresis current control was utilized to reduce the total harmonic distortion and increase the power factor at full load. The PI controller was added to the outer voltage loop to regulate the output voltage. Ziegler-Nichol's tuning method was used to determine the controller gain levels. Simulation results were obtained for the AC-DC converter at a constant switching frequency to show the benefits of the proposed control method, which has a low total harmonic distortion and a high-power factor compared with cases without a controller. The proposed control method is accurate and efficient for achieving the power factor correction converter. Besides, the proposed control was stable during dynamic and steady-state responses.

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Chandra, B. Vijay, SK Jani Basha, SK Abdul Rasool, P. Hari Krishna, R. Veda Kumar, Ch Srinivas, K. SowjanKumar, and G. V. K. Murthy. "Hybrid Active Power Filter for Power Quality Improvement." International Journal of Innovative Research in Computer Science & Technology 10, no. 4 (July 27, 2022): 222–28. http://dx.doi.org/10.55524/ijircst.2022.10.4.28.

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A Deadbeat current controller for an LC-coupling hybrid active power filter is proposed, which can track with the reference compensation current with low steady- state error and fast dynamic response. Moreover, it can lead Hybrid Active power Filter to be operating at a fixed switching frequency with low output current ripples, thus reducing the size of the filtering circuit. The stability issue and parameter design of the proposed deadbeat current controller are analyzed and discussed. Finally, the compensating performance of the deadbeat current controller for the Hybrid Active Power Filter (LC-HAPF) is verified by simulation compared with the conventional hysteresis bandwidth modulation control, the proportional-integral (PI) control, and the proportional multi-resonant control for the LC-HAPF, which shows its effectiveness and superior compensating performances.

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Soomro, Dur Muhammad, Sager K. Alswed, Mohd Noor Abdullah, Nur Hanis Mohammad Radzi, and Mazhar Hussain Baloch. "Optimal design of a single-phase APF based on PQ theory." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (September 1, 2020): 1360. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1360-1367.

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The instantaneous active and reactive power (PQ) theory is one of the most widely used control theory for shunt active power filter (SAPF), which can be implemented in single-phase and three-phase systems. However, the SAPF with PQ theory still had ability to improve to become more efficient. This paper presents the optimal design of a single-phase SAPF in terms of reducing the current harmonic distortion and power loss in voltage source inverter (VSI) controlled with the semiconductor switching devices IGBT, MOSFET and Hybrid (combination of IGBT and MOSFET). In order to reduce the switching frequency and power loss of VSI, instead of using single-band hysteresis current controller (HCC), double-band HCC (DHCC) and triple-band HCC (THCC) is used in the SAPF. The designed SAPF is tested with different non-linear loads to verify the results by using MATLAB Simulink.

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Ramchand, Rijil, K. Gopakumar, Chintan Patel, K. Sivakumar, Anandarup Das, and Haitham Abu-Rub. "Online Computation of Hysteresis Boundary for Constant Switching Frequency Current-Error Space-Vector-Based Hysteresis Controller for VSI-Fed IM Drives." IEEE Transactions on Power Electronics 27, no. 3 (March 2012): 1521–29. http://dx.doi.org/10.1109/tpel.2011.2120624.

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Hu, Xue Zhi, and Guang Qun Nan. "Research on Induction Motor DTC System Based on Fuzzy PI Controller." Applied Mechanics and Materials 29-32 (August 2010): 2200–2204. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.2200.

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Traditional induction motor direct torque control system with the hysteresis loop controller, based on torque error, set the amplitude error to select the inverter switching state, is a Band-Band Control , torque error and stator flux error of level can not be distinguished, switching frequency is not constant, over-sector current and the distortion flux linkage can product low speed torque ripple, affecting the control of the system effect. The paper proposed fuzzy PI control of induction motor direct torque control scheme, a system of principles was introduced, controller parameters was designed by fuzzy theoretical. Finally a full-digital experimental system was built with the TMS320F2812 as the master chip and PM30CSJ060 as an inverter main circuit. Results show that the dynamic and static performance and running smoothly with low-speed is verified.

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Bayazid, Md Hasan, Tawfikur Rahman, Masuma Akter, Md Moniruzzaman, Emtiaz Ahmed Mainul, Ratan Kumar Nondy, SM Rezaul Karim, and Sadik Shahriar Haque Sifat. "Hybrid Switching Control-Based DC to AC Inverter for Microgrid Using Renewable Energy Sources." IUBAT Review 6, no. 1 (June 28, 2023): 25–46. http://dx.doi.org/10.3329/iubatr.v6i1.67229.

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Hybrid switching control-based direct current (DC) to alternating current (AC) inverter is a method of controlling the flow of power from DC sources such as solar panels or wind turbines to AC loads in a microgrid. In a microgrid, renewable energy sources are often used to supplement traditional sources of energy and improve overall energy efficiency. To simulate micro-grid systems, an effective three-legged IGBT inverter has been developed using Matlab R2016a/Simulink. The inverter switches are controlled by a pulse controller, which creates the switching gate pulses. This work models the output voltage and current waveforms of the three-phase 180° voltage source inverter that supplies nonlinear loads. To lower the total harmonic distortion (THD) of the current and voltage outputs of the three-phase voltage source converter (VSC), a filter circuit and a two-level pulse width modulation (PWM) generator have been presented. This pulse-width modulation generator compares the modulating signal and a high-frequency triangular carrier wave. Sinusoidal pulse width modulation (SPWM) is used for PWM control. Moreover, the hybrid switching control-based DC-to-AC inverter utilizes a combination of pulse width modulation (PWM) and hysteresis current control techniques to maintain a constant AC output voltage and frequency. PWM control is used to regulate the voltage, while hysteresis current control is used to regulate the current. Additionally, an inductor-capacitor-inductor (LCL) filter is used to improve the stability of the power converter by providing a damping effect on the system. Overall, the LCL filter is a versatile and effective tool for improving the performance of power inverters, especially in applications where high efficiency and low harmonic distortion are important. IUBAT Review—A Multidisciplinary Academic Journal, 6 (1): 25-46

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Chen, Jeng Yue, Tsung Cheng Chen, You Sheng Chen, and Gwo Jen Chiou. "Application of Zero-Vector Control to Three-Phase Inverter." Advanced Materials Research 591-593 (November 2012): 1687–90. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.1687.

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In this paper, a new application of three-phase inverter using zero-vector control is proposed. In order to control the amplitude of output current, the d-q axis coordinate transformation, hysteresis controller and space vector strategy are adopted. Besides, the frequency of output current also can be adjusted by zero-vector control. Therefore, the proposed inverter has lower switching loss, higher system efficiency and better dynamic response. Use VisSim simulation software and TI TMS320F28335 chip to implement the proposed control strategy. The controller has several advantages such as easier to control, smaller circuit size and fully digital design etc. Finally, the experimental results are compared with the proposed theory for verifications.

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Tekwani, P. N., R. S. Kanchan, and K. Gopakumar. "Novel Current Error Space Phasor Based Hysteresis Controller Using Parabolic Bands for Control of Switching Frequency Variations." IEEE Transactions on Industrial Electronics 54, no. 5 (October 2007): 2648–56. http://dx.doi.org/10.1109/tie.2007.899849.

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Aihsan, Muhammad Zaid, Auzani Jidin, Azrita Alias, and Tole Sutikno. "A simple duty cycle control technique to minimize torque ripple in open-end winding induction motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 2 (June 1, 2023): 1270. http://dx.doi.org/10.11591/ijpeds.v14.i2.pp1270-1279.

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Modern electric vehicles (EVs) that drive an induction motor (IM) fed by a traction inverter are fast gaining popularity due to their simple configuration and robustness. The direct torque control (DTC) technique is one of the best control methods to drive the IM, especially in open-end winding configurations, as it offers more voltage vectors. However, the existence of hysteresis controllers and improper switching technique causes larger torque ripples that leads to variable switching frequency. The study will be focused on the open-end winding induction motor where the direct current (DC) power is fed from both sides of the stator windings using the dual inverter configuration. To minimize the torque ripples, a simple switching technique using the duty cycle control method is proposed by injecting a high-frequency square wave into the default inverter switching status to form the new pattern of voltage vectors. The effectiveness of the proposed technique is tested through MATLAB/Simulink software and validated experimentally with a lab-scale setup using a dSPACE controller. The findings show that the proposed method reduces torque ripple by over 50% while keeping the DTC's simple structure.

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El-kholy, E., F. Abel Kader, Ahmed kalas, and M. Dessouki. "Improving Switching Frequency Variation of Hysteresis Current Controlled VSI Fed Induction Motor Drive." International Conference on Electrical Engineering 9, no. 9th (May 1, 2014): 1–18. http://dx.doi.org/10.21608/iceeng.2014.30381.

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29

Boudana, D., L. Nezli, A. Tlemçani, M. Mahmoudi, M. Djemai, and M. Tadjine. "Backstepping/DTC control of a double star synchronous machine drive." Archives of Control Sciences 20, no. 2 (January 1, 2010): 227–47. http://dx.doi.org/10.2478/v10170-010-0015-6.

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Backstepping/DTC control of a double star synchronous machine driveDirect torque control (DTC) allows for very high quality torque control without a need for current controllers tuning or using coordinate transformation. However, barge torque ripples arise as well as inconstant inverter switching frequency due to the hysteresis of comparators. This paper present a backstepping/DTC control based on the space vector modulation (SVPWM) for double star synchronous machine (DSSM) to reduce the torque, flux, current and speed pulsations during steady state. By the coordinate transformation the DSSM models are presented in view of control. Then a conventional DTC is developed to get a decoupled system and a PI controller is designed to control the speed. To improve the static and dynamic control performance of the DSSM, the speed controller is designed using a backstepping/DTC procedure in conjunction with SVPWM. Simulation results with the conventional DTC and proposed backstepping/DTC are presented and compared. Results show the effectiveness and the robustness of the approach proposed.

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30

Bejaoui, Fatah, Chokri Mechmeche, Ali Sghaier Tlili, and Hamed Yahoui. "Design and implementation of a hybrid control for the energy management system in electric traction." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 234, no. 10 (July 10, 2020): 1075–87. http://dx.doi.org/10.1177/0959651820932677.

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This article intends designing and implementing a hysteresis current controller for the energy management system within an electric traction to maintain the output voltage in a certain interval whatever the disturbances to the system. The energy management system within an electric traction encompasses a battery functioning as a fuel cell within the primary energy source, an ultracapacitor considered as an auxiliary source and two direct current to direct current converters renowned as boost and buck/boost converters, whose modeling is constantly contemplated as a very difficult task. As a matter of fact, these converters are designed as switching circuits with a prevalent change of structures, which makes them strongly nonlinear. Thereby, they can be assumed as hybrid dynamical systems whose continuous parts are especially characterized by electrical magnitudes, namely, the currents and voltages in the converters, and whose discrete part is illustrated by the high-frequency switching metal–oxide–semiconductor field-effect transistor which demands faster control mechanisms to ensure proper regulation of the output voltage of two direct current to direct current converters. The validity and effectiveness strategy control of the energy management system are highlighted by numerical simulation as well as by experimental implementation on the DSPACE1104 R&D Controller Board.

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31

Komurcugil, Hasan. "Double-band hysteresis current-controlled single-phase shunt active filter for switching frequency mitigation." International Journal of Electrical Power & Energy Systems 69 (July 2015): 131–40. http://dx.doi.org/10.1016/j.ijepes.2015.01.010.

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32

R, Palanisamy. "Hysteresis Control 3-Level SI-NPC Inverter with Wind Energy System." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (December 1, 2017): 1764. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1764-1770.

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The system is a 3-level Neutral point clamped hysteresis current controlled Inverter with Wind energy as power source. The input DC Power for the multi-level inverter is drawn from wind turbine generator connected through a rectifier circuit. An inductor has been introduced for smoothening the DC output from the rectifier. The inverter uses Neutral Point Clamped topology. The switching pulses for the inverter are achieved by hysteresis current control technique. This system is advantageous over the conventional SPWM based system as the hysteresis current control allows to reduce the low frequency harmonics while also allowing to control the fundamental amplitude depending on frequency. The outputs for the system are verified using MATLAB simulations. The hardware for Hysteresis current control for the inverter is implemented by using a dSPIC microcontroller. The proposed system can be implemented in households for supplying backup power in case of power shortage and can also be used as a primary power source if wind flow is abundant. It is easy to implement, economical and provides clean energy

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33

Gupta, Rajesh. "Generalized Frequency Domain Formulation of the Switching Frequency for Hysteresis Current Controlled VSI Used for Load Compensation." IEEE Transactions on Power Electronics 27, no. 5 (May 2012): 2526–35. http://dx.doi.org/10.1109/tpel.2011.2175750.

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34

Saleem, MOHAMED Muftah. "Comparative Study between Shunt Active Filter and Hybrid Filter." مجلة الجامعة الأسمرية: العلوم التطبيقية 2, no. 2 (December 30, 2017): 65–76. http://dx.doi.org/10.59743/aujas.v2i2.1111.

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This paper presents an comparative study between shunt active filter and shunt hybrid filter based on configuration system and harmonic isolation. The harmonic isolator isbased on Self Tuning Filters (STF) (it can be tuned at any frequency). The study of the active filter control is divided in two parts. The first part deals with the harmonic isolator which generates the harmonic reference currents. The second part focuses on the generation of the switching pattern of the IGBTs of the inverter by the modulated hysteresis current controller. The studied hybrid active filter consists of an active filter and three phase tuned LC filters for 7th harmonic frequency. The nonlinear load is a diode rectifier feeding a (R, C) parallel load. The use of STF's simplifies the control scheme by reducing the number of extraction filters. The use of STFs instead of classical extraction filters allows extracting directly the voltage and current fundamental components. The effectiveness of this study has been verified by computer simulation and comparing the results.

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35

Singh, Jitendra Kumar, and Ranjan Kumar Behera. "An Improved Hysteresis Current Controller for Grid-Connected Inverter System to Address Power Quality Issues at Reduced Switching Frequency." IEEE Transactions on Industry Applications 57, no. 2 (March 2021): 1892–901. http://dx.doi.org/10.1109/tia.2021.3052426.

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36

Dey, Anubrata, Najath Abdul Azeez, Kallarackal Mathew, Kumarukattan Nair Gopakumar, and Marian P. Kazmierkowski. "Hysteresis current controller for a general n ‐level inverter fed drive with online current error boundary computation and nearly constant switching frequency." IET Power Electronics 6, no. 8 (September 2013): 1640–49. http://dx.doi.org/10.1049/iet-pel.2012.0527.

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37

Dey, Anubrata, K. Mathew, K. Gopakumar, and Marian P. Kazmierkowski. "Nearly Constant Switching Frequency Hysteresis Current Controller with Fast Online Computation of Boundary for a 2-Level Induction Motor Drive." EPE Journal 23, no. 3 (September 2013): 13–21. http://dx.doi.org/10.1080/09398368.2013.11463856.

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38

Dey, Anubrata, P. P. Rajeevan, Rijil Ramchand, K. Mathew, and K. Gopakumar. "A Space-Vector-Based Hysteresis Current Controller for a General $n$-Level Inverter-Fed Drive With Nearly Constant Switching Frequency Control." IEEE Transactions on Industrial Electronics 60, no. 5 (May 2013): 1989–98. http://dx.doi.org/10.1109/tie.2012.2200217.

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39

Azeez, Najath Abdul, Anubrata Dey, K. Mathew, Jaison Mathew, K. Gopakumar, and Marian P. Kazmierkowski. "A Medium-Voltage Inverter-Fed IM Drive Using Multilevel 12-Sided Polygonal Vectors, With Nearly Constant Switching Frequency Current Hysteresis Controller." IEEE Transactions on Industrial Electronics 61, no. 4 (April 2014): 1700–1709. http://dx.doi.org/10.1109/tie.2013.2266083.

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40

Mercorelli, Paolo. "A Multilevel Inverter Bridge Control Structure with Energy Storage Using Model Predictive Control for Flat Systems." Journal of Engineering 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/750190.

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The paper presents a novel technique to control the current of an electromagnetic linear actuator fed by a multilevel IGBT voltage inverter with dynamic energy storage. The technique uses a “cascade model predictive control (MPC),” which consists of two MPCs. A predictive control of the trajectory position predicts the optimal current, which is considered to be the desired current for the second MPC controller in which a hysteresis control technique is also integrated. Energy is stored in a capacitor using energy recovery. The current MPC can handle a capacitor voltage higher than the source voltage to guarantee high dynamic current and disturbance compensation. The main contribution of this paper is the design of an optimal control structure that guarantees a capacitor recharge. In this context, the approach is quite new and can represent a general emerging approach allowing to reduce the complexity of the new generation of inverters and, in the meantime, to guarantee precision and acceptable switching frequency. The proposed technique shows very promising results through simulations with real actuator data in an innovative transportation technology.

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41

CHENNAI, Salim. "Series APF based on Five and Seven-Level NPC Inverters using modified PQ Method." Electrotehnica, Electronica, Automatica 71, no. 1 (March 15, 2023): 22–29. http://dx.doi.org/10.46904/eea.23.71.1.1108003.

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This paper presents the performance analysis of Series Active Power Filter (Series APF) based on five and seven-level neutral point clamped (npc) using modified instantaneous reactive power control strategy to use for harmonic and all voltage disturbances compensation. The conventional configuration based on standard voltage source inverter (VSI) with hysteresis controller presents several drawbacks such us uneven switching frequency and limited power applications. Multi-level inverters such us Five and seven-level are currently being investigated and used in various industrial applications; their advantages include the capability to reduce the harmonic content and decrease the voltage or current ratings of the semiconductors with low switching losses, low electromagnetic interference, and low acoustic noise. Fuzzy controllers are successfully employed in various industrial applications and are found more robust than conventional controllers; they represent a good alternative to classic control systems. To benefit of all these advantages two configuration of Series APF are presented in this paper adopting the same control scheme based on Phase Disposition-Sinusoidal Pulse Width Modulation (PD-SPWM) and fuzzy logic control (FLC). The proposed two series APF are evaluated using MATLAB-Simulink software and SimPowerSystem Toolbox for harmonic compensation and in case of all voltage disturbances compensation. The simulation results show the performance and the efficiency of the proposed Series APF based on seven-lever (npc) inverter in the improvement of the power quality.

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42

Nguyen-Van, Triet, Rikiya Abe, and Kenji Tanaka. "MPPT and SPPT Control for PV-Connected Inverters Using Digital Adaptive Hysteresis Current Control." Energies 11, no. 8 (August 9, 2018): 2075. http://dx.doi.org/10.3390/en11082075.

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Most PV systems are usually controlled by a Maximum Power Point Tracking (MPPT) algorithm to maximize the generated electrical power. However, the maximum power is often unstable and depends on the solar irradiance and temperature. This makes it difficult to control the power grid supply-demand balance due to fluctuations caused by the increase of renewable and variable PV systems. This paper proposes a new control algorithm for a PV-connected inverter called Specified Power Point Tracking (SPPT) control in addition to the conventional Maximum Power Point Tracking (MPPT) control. The PV system is controlled to generate the maximum power or a specified power depending on the electricity transactions comes from the electricity trading system. A high-speed FPGA-based digital adaptive hysteresis current control method, which has fast and stable response and simple structure comparing with the popular Sine-triangle Pulse Width Modulation (SPWM) method, is proposed to implement the MPPT and SPPT control. The adaptive hysteresis current band is calculated adaptively to improve a disadvantage of the classical fixed band hysteresis current control on the varying switching frequency. A reference current used in the adaptive hysteresis current control is calculated such that the output power of the PV-connected inverter is maximized in the MPPT control or is maintained at a given value in the SPPT control. The experimental and simulation results show that the PV-connected inverter under the proposed control algorithm generates the desired power almost exactly and yields stable and fast response despite the varying irradiance.

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43

Abdul Azeez, Najath, Anubrata Dey, K. Mathew, Jaison Mathew, and K. Gopakumar. "A Nearly Constant Switching Frequency Current Error Space Vector Based Hysteresis Controller for an IM Drive with 12-Sided Polygonal Voltage Space Vectors." EPE Journal 23, no. 4 (December 2013): 33–41. http://dx.doi.org/10.1080/09398368.2013.11463865.

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44

Kadum, Arkan A. "New adaptive hysteresis band width control for direct torque control of induction machine drives." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (December 1, 2020): 1908. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp1908-1917.

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This paper presents a new adaptive hysteresis band control approach used in direct torque control (DTC) of the induction motor (IM) drives with the switching tables for the generation of PWM signals. Constant Hysteresis Direct torque control (CHB-DTC) method used the torque and stator flux errors to generate the stator voltage reference and frequency vectors for controlling the three-phase induction motor. The CHB-DTC gives better torque transient performance but it has large steady state ripples. To reduce torque and stator current ripples in CHB-DTC controlled induction motor drives a new adaptive hysteresis band control (AHB) approach is proposed, where the hysteresis band is adapted in real time with the stator flux and torque errors variation, instead of fixed bandwidth. Both classical CHB-DTC method and the proposed adaptive hysteresis band DTC (AHB-DTC) fed three induction motor have been simulated using Matlab/Simulink. The simulation results at different operating conditions over a wide speed range demonstrate the validity, effectiveness, and feasibility of the proposed scheme. The measurements showed that torque ripples were significantly decrease with the new AHB-DTC technique and better speed response in step up or down compared to the CHB-DTC.

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45

Ramchand, R., K. Sivakumar, A. Das, C. Patel, and K. Gopakumar. "Improved switching frequency variation control of hysteresis controlled voltage source inverter-fed IM drives using current error space vector." IET Power Electronics 3, no. 2 (2010): 219. http://dx.doi.org/10.1049/iet-pel.2009.0020.

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46

Gautam, Shweta, and Rajesh Gupta. "Unified time‐domain formulation of switching frequency for hysteresis current controlled AC/DC and DC/AC grid connected converters." IET Power Electronics 6, no. 4 (April 2013): 683–92. http://dx.doi.org/10.1049/iet-pel.2012.0484.

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47

Sung, Guo-Ming, Li-Fen Tung, Chong-Cheng Huang, and Hong-Yuan Huang. "Modified Predictive Direct Torque Control ASIC with Multistage Hysteresis and Fuzzy Controller for a Three-Phase Induction Motor Drive." Electronics 11, no. 11 (June 6, 2022): 1802. http://dx.doi.org/10.3390/electronics11111802.

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This paper proposes a modified predictive direct torque control (MPDTC) application-specific integrated circuit (ASIC) with multistage hysteresis and fuzzy controller to address the ripple problem of hysteresis controllers and to have a low power consumption chip. The proposed MPDTC ASIC calculates the stator’s magnetic flux and torque by detecting three-phase currents, three-phase voltages, and the rotor speed. Moreover, it eliminates large ripples in the torque and flux by passing through the modified discrete multiple-voltage vector (MDMVV), and four voltage vectors were obtained on the basis of the calculated flux and torque in a cycle. In addition, the speed error was converted into a torque command by using the fuzzy PID controller, and rounding-off calculation was employed to decrease the calculation error of the composite flux. The proposed MDMVV switching table provides 294 combined voltage vectors to the following inverter. The proposed MPDTC scheme generates four voltage vectors in a cycle that can quickly achieve DTC function. The Verilog hardware description language (HDL) was used to implement the hardware architecture, and an ASIC was fabricated with a TSMC 0.18 μm 1P6M CMOS process by using a cell-based design method. Measurement results revealed that the proposed MPDTC ASIC performed with operating frequency, sampling rate, and dead time of 10 MHz, 100 kS/s, and 100 ns, respectively, at a supply voltage of 1.8 V. The power consumption and chip area of the circuit were 2.457 mW and 1.193 mm × 1.190 mm, respectively. The proposed MPDTC ASIC occupied a smaller chip area and exhibited a lower power consumption than the conventional DTC system did in the adopted FPGA development board. The robustness and convenience of the proposed MPDTC ASIC are especially advantageous.

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48

Shen, Shiqi, Hui Wang, Yaojing Feng, Mengqiu Li, and Yichang Zhong. "Predictive Current Control for Switched Reluctance Motor Based on Local Linear Phase Voltage Model." Applied Sciences 12, no. 3 (February 7, 2022): 1688. http://dx.doi.org/10.3390/app12031688.

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In this paper, a predictive phase current control (PCC) scheme based on a local linear phase voltage model for a switched reluctance motor is proposed. The current is controlled by regulating the average voltage through PWM, ensuring a fixed switching frequency. A linear model is proposed to approximate the relationship between the voltage and the current slope in a short period. By using the voltage and current slope information in the previous control cycle, the intercept and slope of the model can be identified online. In the previous control cycle, the phase voltage changes from zero to positive or negative DC-link voltage, and then the identified model is used to predict the average voltage required in the next PWM cycle for the actual current so as to accurately track its reference. The effectiveness of the proposed PCC was verified experimentally. The results demonstrate that the proposed control scheme can significantly reduce the current and torque ripples compared to hysteresis control with the same sampling rate. The proposed PCC is easy to implement, does not need to obtain the motor characteristics in advance and is not sensitive to the changes in characteristic parameters caused by motor aging, etc. It is relatively suitable for applications that need to accurately track the given current curve.

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Poulsen, S., and M. A. E. Andersen. "Hysteresis controller with constant switching frequency." IEEE Transactions on Consumer Electronics 51, no. 2 (May 2005): 688–93. http://dx.doi.org/10.1109/tce.2005.1468020.

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50

Tadeu Galelli, Marcos, Fernando Lessa Tofoli, Márcio da Silva Vilela, Ernane Antônio Alves Coelho, João Batista Vieira Júnior, Luiz Carlos de Freitas, and Valdeir José Farias. "Proposal Of A Hysteresis Controller With Constant Switching Frequency." Eletrônica de Potência 10, no. 1 (June 1, 2005): 1–6. http://dx.doi.org/10.18618/rep.2005.1.001006.

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Journal articles on the topic 'Switching Frequency Hysteresis Current Controller'

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