Abstract：Power storage system composed by batteries and super-capacitors is an important part of the electrical vehicle. In this paper, a novel charge and discharge circuit based on hybrid cascaded multi-level converter is proposed, where the direct-series cells are replaced by a novel bridge-arm-cascaded circuit which can realize the equalization and charge-discharge control at the same time. Since each storage cell is controlled separately, the voltage balance can be realized on-time. The utilization ratio can be improved while the over-charge and over-discharge can be avoided. The output multi-level voltage can reduce the the dv/dtand harmonic while the control performance can be improved. The control strategy of the proposed circuit is analyzed in the paper. The experiment using lead-acid batteries are implemented to verify the effects of the proposed circuit.
郑泽东, 亢玖慧, 任先文, 王奎, 李永东. 用于电动汽车的一种新型混合级联型多电平储能变换器[J]. 电工技术学报, 2013, 28(1增): 50-54.
Zheng Zedong, Kang jiuhui, Ren Xianwen, Wang kui, Li Yongdong. A Novel Hybrid Cascaded Multi-Level Converter for Power Storage Applied in Electrical Vehicle. Transactions of China Electrotechnical Society, 2013, 28(1增): 50-54.
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