一拍滞后对三相异步电机模型预测电流控制的影响及补偿方法

doi:10.19595/j.cnki.1000-6753.tces.171281

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Abstract Recently, model predictive control (MPC) has been a hot research topic in electric drives for its advantages of clear concepts and easy consideration of multivariable case with constraints. In this paper, the effect of one-step delay on continuous control set model predictive current control (CCS-MPCC) for three-phase induction machine is investigated by the closed-loop system and the distribution of the closed-loop poles. Four model-based delay compensation methods are compared from the static and dynamic characteristics of the prediction, and the sensitivity to the motor parameters. Firstly, the basic principle of CCS-MPCC for three-phase induction machine is introduced. Then, the effect of one-step delay on CCS-MPCC is analyzed by using closed-loop model of the system, and four model-based prediction compensation methods are presented. Finally, the effect of one-step delay on CCS-MPCC characteristics is verified by simulation and experiment, and the characteristics of four compensation methods are compared. The experimental results show that the improved reduced order observer can effectively reduce the current overshoot, oscillation and current ripple, improve dynamic response speed and control stability of CCS-MPCC.

Key words： Model predictive control current control three phase induction machine one-step delay delay compensation

Received: 11 September 2017 Published: 12 November 2018

PACS:	TM343
	TP272

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	Wang Zhiguo
	Zheng Zedong
	Li Yongdong
	Peng Zhong
	Deng Zhichang

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Wang Zhiguo,Zheng Zedong,Li Yongdong等. The Effect of One-Step Delay on the Model Predictive Current Control for Three-Phase Induction Machine and the Delay Compensation Methods[J]. Transactions of China Electrotechnical Society, 2018, 33(21): 4928-4940.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171281 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I21/4928

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