三相逆变器统一空间矢量PWM实现方法

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Abstract The relationship between space vector pulse width modulation (SVPWM) and carrier-based PWM methods is comprehensively analyzed. The explicit modulation function expression, in which various continuous and discontinuous SVPWM strategies are intuitively embodied, is established, and a unified carrier-based SVPWM method is presented. Furthermore, a unified SVPWM fast algorithm for three-phase inverters is proposed. The proposed algorithm calculates the actual gating times for each inverter leg directly by use of three-phase reference voltages and needn't complex coordinate transformations, trigonometric function calculations, sector number identification, and the recombination of actual gating times, so it can be more easily implemented with a microprocessor compared with SVPWM conventional algorithm. At last, the output voltage harmonic characteristics of the three-phase inverter under the SPWM and various SVPWM control are investigated. The simulation and experimental results show that the unified SVPWM implementation method for three-phase inverters is feasible and valid.

Key words： SVPWM carrier-based PWM modulation function fast algorithm harmonic analysis

Received: 22 January 2009 Published: 17 February 2014

PACS:

TM301.2

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	Articles by authors
	Wen Xiaoling
	Yin Xianggen
	Zhang Zhe

Cite this article:

Wen Xiaoling,Yin Xianggen,Zhang Zhe. Unified Space Vector PWM Implementation Method for Three-Phase Inverters[J]. Transactions of China Electrotechnical Society, 2009, 24(10): 87-93.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I10/87

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