Influence of Pole-Pairs Combination on the Performance of Wound-Rotor Brushless Double-Fed Machine
Ren Taian1,2, Kan Chaohao1, Hu Yang1, Cheng Yuan1, Li Xiang1
1. College of Electrical & Automatic Engineering Hefei University of Technology Hefei 230009 China; 2. Industrial Training Center Hefei University of Technology Hefei 230601 China
Abstract：The brushless doubly-fed machine(BDFM) has its characteristics. There are two sets of windings with different pole pairs on the stator. For the two sets of windings for determining pole pairs, different combination of pole pairs has certain influence on the performance of the machine. The relationship between the rotor current, the output voltage of power winding(PW) side and the excitation current of control winding(CW) under no-load and load conditions, also the relationship between system output power and excitation current of control winding under load condition are derived based on the equivalent circuit of the BDFM with wound rotor. The performance of machines under two combinations of pole pairs(2/4 or 1/3) are studied by finite element method. The correctness of theoretical derivation and finite element analysis is verified by experiments. The experimental results also indicate that the machine with a PW of small pole pairs has the advantages of small rotor current, low saturation, wide operating range, high output voltage on the PW side, and large system output power.
任泰安, 阚超豪, 胡杨, 程源, 李响. 极对数组合形式线转子无刷双馈电机性能的影响[J]. 电工技术学报, 2020, 35(3): 509-519.
Ren Taian, Kan Chaohao, Hu Yang, Cheng Yuan, Li Xiang. Influence of Pole-Pairs Combination on the Performance of Wound-Rotor Brushless Double-Fed Machine. Transactions of China Electrotechnical Society, 2020, 35(3): 509-519.
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2020, Vol. 35 
