五相逆变器非正弦双随机空间矢量脉宽调制策略

doi:10.19595/j.cnki.1000-6753.tces.170843

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Abstract To improve the high frequency performance of non-sinusoidal power supply of five-phase inverter, a novel five-phase space vector pulse width modulation (SVPWM) strategy is proposed. This strategy is a non-sinusoidal dual random SVPWM method based on randomized switching time delay and randomized distribution of zero vectors. According to near four vectors SVPWM algorithm, the fundamental reference voltage vector is synthesized in the fundamental subspace as the third harmonic reference voltage vector is synthesized in the third harmonic subspace, by which the duty cycle and switching action are determined. With the sampling frequency constant, the switching action corresponding to the sampling time is randomly delayed within a certain range, while the time distribution of inserted zero vectors is randomized. Therefore, the switching frequency and the symmetrical pulse position are both randomized simultaneously. The simulation and experimental results show that the method reduces the amplitude of higher harmonics without affecting the output of fundamental and third harmonic voltage, which achieves the purpose of harmonic dispersion.

Key words： Five-phase inverter non-sinusoidal power supply higher harmonics random space vector pulse width modulation switching time delay zero vectors

Received: 15 June 2017 Published: 30 October 2018

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TM761

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	Articles by authors
	Zhu Lin
	Bu Feifei
	Huang Wenxin
	Pu Tianyu

Cite this article:

Zhu Lin,Bu Feifei,Huang Wenxin等. Non-Sinusoidal Dual Random Space Vector Pulse Width Modulation Strategy for Five-Phase Inverter[J]. Transactions of China Electrotechnical Society, 2018, 33(20): 4824-4833.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170843 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I20/4824

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