Abstract：In this paper, magnetic equivalent circuit framework was adopted to establish magnetic field model of a 7.5kW hydro-generator in laboratory. In the process of modeling, the air gap circuit structure changes as the rotor rotate, a new air gap circuit division method was proposed in this paper, namely superposition magnetic potential line. As the magnetic equivalent circuit was built, couple the magnetic field equations and circuit equations, a field-circuit coupling dynamic simulation model of hydro-generator was built, all kinds of working conditions of generator can be simulated and calculated. The no-load and no-load three-phase sudden short-circuit of the generator were simulated, the simulation results compared with experiment, verifying the magnetic equivalent circuit model is correct. The method provides theoretical way to improve the dynamic analysis of large hydro-generator.
徐月娇, 王红宇, 李和明, 杜文婧. 基于场路耦合等效磁网络结构的水轮发电机建模方法[J]. 电工技术学报, 2013, 28(1增): 275-280.
Xu Yuejiao, Wang Hongyu, Li Heming, Du Wenjing. Hydro-Generator Modeling Approach Based on Field-Circuit Coupling Magnetic Equivalent Circuit Framework. Transactions of China Electrotechnical Society, 2013, 28(1增): 275-280.
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