三相电流型多电平整流器的频域特性

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Abstract Based on the double Flourier transform, operating characteristics in frequency domain of three-phase multilevel current source rectifier (MCSR) is quantificationally developed in this paper. Especially, harmonic characteristics of AC line currents and DC link voltage of MCSR with the notable carrier phase-shifted SPWM (CPS-SPWM) is mainly investigated. It is shown that with the CPS-SPWM, the MCSR can obtain many good features, such as the multilevel PWM AC current waveforms of equivalent higher carrier frequency even under a lower carrier frequency, and that the dc link voltage of the MCSR has no low harmonic components and the lowest harmonic group occurs at N multiples carrier frequency. Based on the above analytical results, a simple and general method to design sharing-current inductors in MCSR is also presented. At last, simulated and experimental results are given to demonstrate the proposition.

Key words： Multilevel current source rectifier frequency domain carrier phase-shifted SPWM

Received: 28 April 2009 Published: 04 March 2014

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TM461

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	Bai Zhihong
	Zhang Zhongchao
	Ruan Xinbo

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Bai Zhihong,Zhang Zhongchao,Ruan Xinbo. Investigation on the Characteristics in Frequency Domain of Three-Phase Multilevel Current Source Rectifier[J]. Transactions of China Electrotechnical Society, 2010, 25(10): 94-100.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2010/V25/I10/94

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