逆变器简化PWM算法及抑制共模电压策略

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Abstract Combining with classification algorithm, this paper simplified the algorithm of pulse width modulation(PWM) used in two-level inverter in αβ coordinate system. The simplified algorithm directly judges the sector in which the reference voltage is located and obtains devices switching points. Based on analyzing the effect of dead time on the devices switching points of each leg, the problem of inhibit common-mode voltage failure due to dead time is solved and common-mode peak voltages are eliminated through adjusting devices switching moments. Simulation and experiment results prove that the simplified algorithm of PWM is correct and modified inhibit common-mode algorithm proposed can reduce common-mode voltage effectively.

Key words： Common-mode voltage simplified algorithm of PWM classification algorithm inverter

Received: 24 December 2013 Published: 05 November 2014

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TM464

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	Zhou Juan
	Wei Chen
	Yang Yu
	Chen Ying
	Zhang Yanbing

Cite this article:

Zhou Juan,Wei Chen,Yang Yu等. Inverter Simplified Algorithm of PWM and Inhibit Common-Mode Voltage Strategy[J]. Transactions of China Electrotechnical Society, 2014, 29(8): 158-165.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I8/158

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