A Novel Unity Power Factor Control of Electrically Excited Synchronous Motor in an Inertia Wheel Energy Storage System
Liu Yang1,2,Shi Liming1,Zhao Lu1,Li Yaohua1
1.Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Science Beijing 100190 China 2.University of Chinese Academy of Science Beijing 100190 China
Abstract：In the electrically excited synchronous motor (ESM) based inertia wheel energy storage DC supply system,there are three degrees of freedom from the control consideration,i.e.the stator flux,the power factor,and the DC-link voltage.To reduce the system reactive power and increase the efficiency,the DC-link voltage should be stabilized and the power factor should be increased.In this paper,a novel unity power factor control scheme for ESM is proposed,in which we degrade the control freedom and perform the close-loop control on power factor and DC-link voltage in a rotor-oriented reference frame.Simulation and experiment carried out in an inertia wheel energy storage system show that,compared with the traditional isd=0 scheme,the proposed scheme increases the power factor to 0.97,and realizes a 28% down of the apparent power,which effectively reduces the system reactive power.
刘洋,史黎明,赵鲁,李耀华. 电励磁同步电机惯性储能直流馈电系统新型单位功率因数控制[J]. 电工技术学报, 2016, 31(1): 147-154.
Liu Yang,Shi Liming,Zhao Lu,Li Yaohua. A Novel Unity Power Factor Control of Electrically Excited Synchronous Motor in an Inertia Wheel Energy Storage System. Transactions of China Electrotechnical Society, 2016, 31(1): 147-154.
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2016, Vol. 31 
