Zhang Yanli1 Fei Wanmin1 L?Zhengyu2 Yao Wenxi2 (1. Shandong University of Technology Zibo 255000 China 2. State Key Laboratory of Power Electronics of Zhejiang University Hangzhou 310027 China)
Chen Zhong1,2 Xu Guoyu2 Yan Wei2 Wang Guanjie2 (1. Changsha University of Science and Technology Changsha 410076 China 2. Chongqing University Chongqing 400044 China)