Abstract In order to solve the problems of current spike and high total harmonic distortion(THD) in the AC current of the current unidirectional hybrid three-phase voltage source rectifier (UHTPVSR), The method to suppress the current spike and reduce THD is proposed. A compensating inductor is added to the current hybrid rectifier for suppressing the current spike caused by the circuit structure. Based on the Euler-Lagrange (EL) mathematical model of three-phase T-type three-level Vienna rectifier and three-phase single-switch Boost rectifier (SSTPBR) a new passivity-based current control strategy for nonlinear virtual damping injection with the specific constraints is proposed. Compared with the traditional passivity-based control strategy of constant damping injection, the new passivity-based current control strategy has the advantages of smaller steady-state error, faster error attenuation, low THD and high power factor. Simulation and experimental results confirm that the improved topology structure of unidirectional hybrid rectifier and the new passivity-based current control strategy are valid.
Li Ping,Wang Jiuhe,Li Jianguo等. A Passivity-Based Current Control Strategy for Unidirectional Hybrid Rectifier[J]. Transactions of China Electrotechnical Society, 2020, 35(21): 4511-4523.
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2020, Vol. 35 
