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Global synchronous discontinuous pulse width modulation method with fast calculation capability for distributed three-phase inverters 被引量:3
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作者 Tao XU Ran WEI +1 位作者 Ke ZHOU Feng GAO 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2016年第1期103-112,共10页
When multiple distributed converters are integrated, the high frequency harmonics will randomly accumulate at the point of common coupling(PCC). This paper proposes a new fast global synchronous discontinuous pulse wi... When multiple distributed converters are integrated, the high frequency harmonics will randomly accumulate at the point of common coupling(PCC). This paper proposes a new fast global synchronous discontinuous pulse width modulation(GSDPWM) method of threephase inverters to effectively attenuate the high frequency current harmonics at PCC. Firstly, the basic principle and the realization method of GSDPWM for three-phase inverters are explained, which can be employed for different modulation types. Then a fast calculation method,which can equally derive the minimized total harmonic distortion(THD) of total current, is proposed to release the calculation burden. Finally, MATLAB simulations and experimental results are presented to verify the performance of GSDPWM. 展开更多
关键词 Global synchronous pulse width modulation Three-phase inverters High frequency harmonics discontinuous pulse width modulation
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Dual-frequency Discontinuous Space Vector Pulse Width Modulation for Five-phase Voltage Source Inverters with Harmonic Injection
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作者 Tianyu Pu Feifei Bu +1 位作者 Haijun Xu Wenxin Huang 《CSEE Journal of Power and Energy Systems》 SCIE CSCD 2021年第3期665-675,共11页
This paper proposes a dual-frequency discontinuous space vector pulse width modulation(DFDSVPWM)for a five-phase voltage source inverter with harmonic injection.In this modulation,for dual-frequency voltage output and... This paper proposes a dual-frequency discontinuous space vector pulse width modulation(DFDSVPWM)for a five-phase voltage source inverter with harmonic injection.In this modulation,for dual-frequency voltage output and reduction of switching losses,two different zero-vector-inserted modes are flexibly employed by alternatively using two types of zero vectors.Based on the comparison with continuous SVPWM,the idea and principle of the proposed DFDSVPWM are analyzed and an example of PWM signals for one bridge is also presented.For switching losses analysis,the impact factors and the calculation method are investigated and the corresponding implementation is given as well.The simulation and experimental results from a prototype verify the correctness and effectiveness of the proposed modulation and it has the advantages of outputting dual-frequency voltage and reducing switching losses. 展开更多
关键词 discontinuous space vector pulse width modulation dual frequency five-phase voltage source inver terharmonic injection switching losses
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