Chongqing University of Technology (CQUT), Chongqing University of Technology (CQUT), Chongqing University of Technology (CQUT), Chongqing University of Technology (CQUT), Chongqing University of Technology (CQUT), Chongqing University of Technology (CQUT), North China Electric Power University, Chongqing University of Technology (CQUT) and North China Electric Power University - State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources