Small-capacitor Drive System of Axial Flux PM Motor Based on Virtual DC Bus Structure

被引:0
|
作者
Zhang C. [1 ]
Xu L. [1 ]
Zhu X. [1 ]
Du Y. [1 ]
Quan L. [1 ]
机构
[1] School of Electrical and Information Engineering, Jiangsu University, Zhenjiang
基金
中国国家自然科学基金;
关键词
Active power decoupling; Axial flux PM motor; Instantaneous voltage control; Small capacitor drive system; Virtual DC-bus;
D O I
10.13334/j.0258-8013.pcsee.202078
中图分类号
学科分类号
摘要
An active power decoupling circuit and instantaneous voltage control strategy applied to axial flux PM motors were proposed. The active power decoupling circuit constructed two power flow paths between the grid and the DC-bus, which significantly increased the control degree and flexibility of grid pulsating power processing under the same power switching frequency. The decoupling capacitor voltage was controlled to track the virtual DC-bus voltage, so the influence of the grid pulsating power on the DC-bus voltage was effectively suppressed. In addition, the instantaneous voltage control strategy was applied in the DC-bus pulsating voltage suppression, and the DC-bus pulsating voltage was limited to a small range to achieve high performance operation of the small capacitor drive system under static and dynamic conditions. The operating mechanism of the new active power decoupling circuit was analyzed, and its mathematical model was deduced. The design of key parameters of the circuit was detailed. Finally, the effectiveness of the decoupling circuit and the corresponding small capacitor drive system was verified by a prototype. © 2021 Chin. Soc. for Elec. Eng.
引用
收藏
页码:7141 / 7151
页数:10
相关论文
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