A Distributed Magnetic Circuit Approach to Analysis of Multiphase Induction Machines With Nonsinusoidal Supply

作者：Wang, Dong^*; Wu, Xinzhen; Chen, Junquan; Guo, Yunjun; Cheng, Siwei

来源：IEEE Transactions on Energy Conversion, 2015, 30(2): 522-532.

DOI：10.1109/TEC.2014.2362193

• Distributed magnetic circuit approach (DMCA)
• magnetic circuit saturation
• magnetizing reactance
• multiphase induction machine
• nonsinusoidal magnetomotive forces (MMFs)
• voltage supply with harmonic injection

A 15-phase induction machine supplied by voltages with third-order harmonic injection has nonsinusoidal magneto-motive forces distribution. This paper introduces a distributed magnetic circuit approach to perform magnetic circuit calculations in order to determine the magnetizing inductance for both the fundamental and third-harmonic component. The proposed approach divides the half-pole or one-pole machine model into a large number of fan-shaped sectors. The air-gap flux densities for all sectors are then solved iteratively. The fundamental and third-harmonic inductances are extracted via Fourier analysis of air-gap flux density distribution. Calculated fundamental and third-order harmonic inductances are compared with those obtained from no-load tests of a 15-phase prototype induction machine. The good agreement between calculated and experimental results verifies the accuracy of the presented method.

• 出版日期2015-6
• 单位青岛大学; 中国人民解放军海军工程大学