谐波励磁同步发电机的建模与动态特性仿真

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Abstract The excitation system is important to the operation of synchronous generator. Third harmonic excitation system (THES) has the characteristics of self-excitation and excellent dynamic characteristics, and is widely used in small and medium-sized synchronous motors. In order to establish the model of the THES, firstly, the third harmonic electromotive force (EMF) formula is deduced, according to the struct of the harmonic windings. Then, based on the common synchronous motor model, the influence of harmonic winding on its rotor motion equation is introduced. Finally, the control block diagram of the closed-loop excitation system is analyzed. Based on Matlab/Simulink, the model is verified. The simulation results show that the transient voltage recovery of the synchronous generator with harmonic excitation is fast and the overshoot is small. Therefore, the model provides a basis for further research.

Key words： third harmonic excitation synchronous generator set excitation system modeling

Received: 28 August 2019 Published: 16 April 2020

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	Liu Wei
	Zhu Changqing

Cite this article:

Liu Wei,Zhu Changqing. Modeling and dynamic characteristic simulation of harmonic excitation synchronous generator[J]. Electrical Engineering, 2020, 21(4): 5-9.

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http://dqjs.cesmedia.cn/EN/Y2020/V21/I4/5

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