直流电容储能反馈和负载功率前馈的PWM整流器控制策略

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Abstract Firstly, the mathematical model of the three-phase voltage PWM rectifier in the dq coordinate system is introduced. The energy and power rectifier exchange relationship is analysed. A dual loop control strategy based on the inner loop for the current and the outer loop for the energy stored in capacitor is proposed, and the design method of the parameters of the control loop is given in this paper. To reduce the impact of uncertainty of the load on the rectifier, the load power feed-forward estimation algorithm is introduced. At last, the dynamic and steady state characteristics of rectifier under the traditional voltage and current double closed-loop control strategy and the strategy proposed in this paper are compared by using experiment. The experiment results show that the proposed control strategy can meet the control requirements of the system at steady state, and have better dynamic characteristics compared with the traditional voltage and current double closed-loop control strategy.

Key words： PWM rectifier grid voltage oriented control energy storage feedback double closed loop load power feed-forward

Received: 14 June 2013 Published: 25 May 2015

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T461

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	Articles by authors
	Jiang Weidong
	Li Wangmin
	She Yangyang
	Wu Zhiqing
	Hu Yang

Cite this article:

Jiang Weidong,Li Wangmin,She Yangyang等. Control Strategy for PWM Rectifier Based on Feedback of the Energy Stored in Capacitor and Load Power Feed-Forward[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 151-158.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I8/151

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