Cascaded Deadbeat Control Strategy with Online Disturbance Compensation for Three-Level PWM Rectifier
Yu Chenhui1, Wang Fengxiang1,2, Lin Guiying1
1. College of Electrical Engineering and Automation Fuzhou University Fuzhou 350108 China; 2. National and local joint Engineering Research Center for Electrical Drives and Power Electronics Quanzhou Institute of Equipment Manufacturing Haixi Institute Chinese Academy of Sciences Quanzhou 362216 China
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).
余晨辉, 汪凤翔, 林贵应. 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[J]. 电工技术学报, 2022, 37(4): 954-963.
Yu Chenhui, Wang Fengxiang, Lin Guiying. Cascaded Deadbeat Control Strategy with Online Disturbance Compensation for Three-Level PWM Rectifier. Transactions of China Electrotechnical Society, 2022, 37(4): 954-963.
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2022, Vol. 37 
