电动汽车用双向准z源逆变器的小信号建模与控制器设计

F. Guo, Lixing Fu, Chien-Hui Lin, Cong Li, Jin Wang
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引用次数: 20

摘要

介绍了电动汽车用双向准z源逆变器(BQ-ZSI)的小信号建模和控制器设计。推导出的小信号模型表明,准z源网络(QZSN)在直流输入电压干扰下容易振荡。由于电池内部阻抗和负载电流的快速变化,电动汽车电池组电压容易出现波动,因此设计了具有前馈补偿的专用电压控制器,以抑制非穿透状态下的干扰,稳定直流电压。仿真和实验结果验证了该控制器的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Small signal modeling and controller design of a bidirectional Quasi-Z-Source inverter for electric vehicle applications
This paper presents the small signal modeling and controller design of a bidirectional Quasi-Z-Source inverter (BQ-ZSI) for electric vehicle (EV) applications. The derived small signal model shows that the Quasi-Z-Source network (QZSN) is prone to oscillate when there is a disturbance from the dc input voltage. Since the battery pack voltage in an EV is easy to fluctuate because of the battery's internal impedance and rapid change of the load current, a dedicated voltage controller with feed forward compensation is designed to reject the disturbance and stabilize the dc-link voltage during non-shoot-through state. Simulation and experimental results are both presented to prove the effectiveness of the proposed controller.
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