电气技术  2020, Vol. 21 Issue (4): 5-9    DOI:
研究与开发 |
谐波励磁同步发电机的建模与动态特性仿真
刘威, 朱长青
陆军工程大学石家庄校区,石家庄 050003
Modeling and dynamic characteristic simulation of harmonic excitation synchronous generator
Liu Wei, Zhu Changqing
Army Engineering University, Shijiazhuang 050003
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摘要 励磁系统对于同步发电机的稳定运行具有重要作用,三次谐波励磁具有自励恒压、动态特性优良的特点,广泛应用于中小型同步发电机。目前关于三次谐波励磁系统的建模研究较少,为建立谐波励磁系统的模型,首先根据谐波绕组的结构特点,推导了三次谐波电动势公式,并指出其自励恒压的特点;进而在一般同步发电机模型的基础上,引入谐波绕组对其转子运动方程的影响,最后以励磁调节器为核心,分析了闭环励磁系统的控制框图。在理论分析的基础上,基于Matlab/Simulink环境,对模型的动态特性进行仿真分析。结果表明,负载突变时谐波励磁同步发电机的端电压恢复快、超调小,所建模型为进一步开展相关研究提供了基础。
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刘威
朱长青
关键词 三次谐波励磁同步发电机组励磁系统建模    
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 wordsthird harmonic excitation    synchronous generator set    excitation system modeling   
收稿日期: 2019-08-28      出版日期: 2020-04-16
作者简介: 刘 威(1993-),男, 河南周口人, 硕士研究生, 研究方向为装备电气测试技术与智能系统。
引用本文:   
刘威, 朱长青. 谐波励磁同步发电机的建模与动态特性仿真[J]. 电气技术, 2020, 21(4): 5-9. Liu Wei, Zhu Changqing. Modeling and dynamic characteristic simulation of harmonic excitation synchronous generator. Electrical Engineering, 2020, 21(4): 5-9.
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