基于在线扰动补偿的三电平PWM整流器级联式无差拍控制策略

doi:10.19595/j.cnki.1000-6753.tces.201112

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Abstract A cascaded deadbeat control (CDBC) strategy with online disturbance compensation is proposed for three-level pulse width modulation (PWM) rectifiers in this paper. Specifically, to realize the decoupling between active power control and reactive power control and to ensure the fast response of system, deadbeat control is adopted for both inner and outer loops, and Luenberger observers are established to estimate and compensate the disturbances brought by inaccurate power model and load variation. In terms of parameter design, the pole placement method is adopted to determine the gain of the observer, and the expected cycle value is introduced into the voltage loop for parameter adjustment, which achieves good matching between inner and outer loops. A series of simulations and experiments are carried out to test the proposed strategy under steady and dynamic conditions. It is shown that the CDBC strategy presents more accurate unity power factor and stronger robustness against load disturbance than the conventional deadbeat power control (DBPC).

Key words： Three-level PWM rectifier online disturbance compensation cascaded deadbeat control Luenberger observer

Received: 30 August 2020

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TM46

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	Yu Chenhui
	Wang Fengxiang
	Lin Guiying

Cite this article:

Yu Chenhui,Wang Fengxiang,Lin Guiying. Cascaded Deadbeat Control Strategy with Online Disturbance Compensation for Three-Level PWM Rectifier[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 954-963.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201112 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I4/954

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