Control Scheme of Bi-Directional Z-Source Inverter in Improving the Dynamic Performance of Electrical Vehicles
Liu Heping1, Liu Ping1, Hu Yinquan1, Fu Qiang2
1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China 2. Wisconsin University Milwaukee WI53211 USA
Abstract:In this paper, a control system based on bi-directional Z-source inverter is discussed for improving dynamic performance of electrical vehicles, and the control scheme for boosting the DC-link voltage is presented. The influence of battery packs' voltage drop on driving performance is analyzed qualitatively under different conditions, such as electric vehicles acceleration. According to the principles of induction motor and vehicles dynamic demand, a topology of bi-directional Z-source inverter is adopted to improve the status of the motor torque reduction due to the large drop of voltage, and improve the output of motor power while electrical vehicles driven at high-speed. The results from the simulations and the experiments of a bi-directional Z-source inverter control system for electrical vehicles verify the feasibility and demonstrated the performance of the proposed control scheme.
刘和平, 刘平, 胡银全, 付强. 改善电动汽车动力性能的双向Z源逆变器控制策略[J]. 电工技术学报, 2012, 27(2): 139-145.
Liu Heping, Liu Ping, Hu Yinquan, Fu Qiang. Control Scheme of Bi-Directional Z-Source Inverter in Improving the Dynamic Performance of Electrical Vehicles. Transactions of China Electrotechnical Society, 2012, 27(2): 139-145.
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