A Modified Reference Saturated Third Harmonic Injected Equal Loading PWM for VSC-Based Renewable Energy Systems

Biswas, Shuvra Prokash; Anower, Md. Shamim; Sheikh, Md. Rafiqul Islam; Islam, Md. Rabiul; Rahman, Md. Ashib; Mahmud, M. A. Parvez; Kouzani, Abbas Z.

doi:10.1109/tasc.2021.3096484

Cited by 19 publications

(3 citation statements)

References 9 publications

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“…Each PWM technique has its own set of benefits and drawbacks depending on the application of the VSI. The most common PWM methods are sinusoidal PWM (SPWM), thirdharmonic injected PWM (THPWM), conventional space vector PWM (CSVPWM), sixty-degree PWM (SDPWM), thirty-degree bus clamping PWM (TDBCPWM), and sixty-degree bus clamping PWM (SDBCPWM) [5]. SPWM is the most basic modulation technique used in VSIs.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

et al. 2023

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Due to the rapid advancement of power semiconductor devices, the use of voltage source inverters (VSIs) has gained widespread acceptance. As a consequence, the performance of the voltage source inverter has emerged as a critical aspect that is highly reliant on the modulation strategy. The pulse width modulation (PWM) technique is the most widely utilized method of controlling power semiconductor switches of VSI. Power quality is always considered as an industrial concern for VSI-based power system such as grid-connected renewable energy systems and industrial motor drives which largely depends on the PWM technique used for switching. However, the existing PWM schemes for VSIs suffer from high total harmonic distortion (THD) and power loss problems. To mitigate the THD and power loss of VSI, a hybrid PWM technique has been proposed in this paper. The proposed hybrid PWM technique introduces a modified modulating signal along with newly shaped carrier signal. A two-level VSI is used to evaluate the performance of the proposed hybrid PWM technique both for with and without filter conditions against RL load. The proposed hybrid PWM technique offers 0.89% filtered voltage THD and 0.69% filtered current THD which are lower than that of existing PWM techniques. On the contrary, at without filter condition, the proposed hybrid PWM technique shows THDs of 45.77% and 12.50% for inverter output voltage and current, respectively which are also lower than those of existing PWM techniques. Apart from these, the proposed hybrid PWM technique reduces the switching and conduction power losses of the VSI as compared to existing PWM techniques. The simulation works are carried out in MATLAB/Simulink environment and a reduced scale experiment is conducted in laboratory to evaluate the performance of the proposed hybrid PWM technique.

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Section: Introductionmentioning

confidence: 99%

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

et al. 2023

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“…To overcome these challenges various control techniques are used to suppress these drawbacks. Several switching techniques have been proposed previously to improve the switching performance of the converters [27] [28], modulation techniques to improve the power loss division performance [29] of MLIs and modified saturated equal loading PWM [30]. In this paper a different approach has been applied by hybridizing NLC and SHE techniques to achieve the same goals of reduced THD in voltage and current waveforms and switching performance by reducing the computational complexity and time for the calculation of switching angles.…”

Section: Introductionmentioning

confidence: 99%

Novel Integrated NLC-SHE Control Applied in Cascaded Nine-Level H-Bridge Multilevel Inverter and Its Experimental Validation

et al. 2023

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In this paper, a novel integrated SHE -NLC control is proposed for the mitigation of unwanted lower-order harmonics in the cascaded H-bridge multilevel inverter. The proposed algorithm has been developed by hybridizing the NLC and SHE methods, in an attempt to keep the merits of both the individual control. The switching angles and nearest levels are calculated by applying the Genetic Algorithm (GA). The proposed technique reduces the calculation time and implementation complexity, thus can be a viable alternative to the real time implementation for SHE. Integrated NLC-SHE control is tested by varying the modulation index and load dynamics. This technique resulted in the reduction in Total Harmonic Distortion (THDs) in load voltage and current. Comparative analysis of NLC, SHE and Integrated NLC-SHE technique is also performed on the CHB nine-level inverter. There is significant reduction in voltage and current THD values and power losses. Efficiency of the inverter is increased. The efficacy of the proposed control CHB nine-level is tested on MATLAB Simulink environment and further validated by experimental results.

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“…ulse width modulation techniques have been very widely used in the field of power electronics and motor control [1][2][3]. However, the regular pulse width modulation techniques use a fixed switching frequency, which has a certain optimization space, thus some variable switching frequency pulse-width modulation techniques are proposed, which mainly include random PWM [4] and predictive PWM [5].…”

Section: Introductionmentioning

confidence: 99%

A Variable Switching Frequency Space Vector Modulation Method Using Voltage Ripple Prediction

Ruan

Song

2022

Preprint

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Regular space vector pulse width modulation (SVPWM) uses a fixed switching frequency, and this method causes high harmonics to be concentrated around integer multiples of the switching frequency. In this paper, we propose a variable switching frequency SVPWM (VSFSVPWM) method with voltage ripple prediction. By varying the switching frequency in real time according to the voltage ripple prediction model under the time domain, VSFSVPWM can suppress high-frequency harmonics caused by pulse width modulation (PWM). The proposed method was fully compared with the CSFSVPWM method on a 5kW inverter for experimental validation.

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A Modified Reference Saturated Third Harmonic Injected Equal Loading PWM for VSC-Based Renewable Energy Systems

Cited by 19 publications

References 9 publications

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

A Hybrid PWM Technique to Improve the Performance of Voltage Source Inverters

Novel Integrated NLC-SHE Control Applied in Cascaded Nine-Level H-Bridge Multilevel Inverter and Its Experimental Validation

A Variable Switching Frequency Space Vector Modulation Method Using Voltage Ripple Prediction

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