| PWM变频器供电交流励磁发电机输出谐波分析 |
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| 引用本文： | 石赟,王文举,贺益康. PWM变频器供电交流励磁发电机输出谐波分析[J]. 大电机技术, 2000, 0(5): 19-24 |
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| 作者姓名： | 石赟 王文举 贺益康 |
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| 作者单位： | 浙江大学电气工程学院,浙江,杭州,310027 |
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| 基金项目： | 国家自然科学基金资助项目!(59877021)，高等学校博士学科点专项科研基金资助课题!(97033517)。 |
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| 摘 要： | 研究由交－直－交固定载波型ＰＷＭ变频器供电励磁的发电系统的谐波特性，给出ＳＰＷＭ、ＳＶＰＷＭ调制模式下变频器输出谐波的解析表达；根据交流励磁电机谐波电路模型，导出定子侧“电源谐波”的解析表达；通过计算实例分析和比较ＳＰＷＭ与ＳＶＰＷＭ两种模式下的谐波特性，为励磁变频器类型选择和谐波抑制策略提供依据。
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| 关 键 词： | 交流励磁发电机 PWM 变频器 输出谐波 |
| 文章编号： | 1000-3983(2000)05-0019-06 |
| 修稿时间： | 2000-03-29 |
The Analytical Study of the Harmonics in the AC Excited Machines Fed by the PWM Inverters |
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| SHI Yun,WANG Wen-ju,HE Yi-kang. The Analytical Study of the Harmonics in the AC Excited Machines Fed by the PWM Inverters[J]. Large Electric Machine and Hydraulic Turbine, 2000, 0(5): 19-24 |
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| Authors: | SHI Yun WANG Wen-ju HE Yi-kang |
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| Affiliation: | SHI Yun,WANG Wen-ju,HE Yi-kang(Electric Engineering College, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | The harmonic nature issued from the a.c.excited machines (ACEM)fed by the PWM in verters with fixed frequency carrier was investigated in this paper.The analytic al expressions of the harmonics generated by SPWM(sinusoidal pulse-width modulated)and SVPWM(space vector PWM) inverters were formulated and,then,the expression s of the so called source-harmonics were deduced according to the harmonic equiv alent circuit model of the ACEM.The sample calculation and the comparative study of the harmonic characteristics generated by SPWM and SVPWM inverters provide b asis for the selection of inverters and the strategies of harmonic suppression. |
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| Keywords: | PWM inverter AC excitation Harmonics SPWM SVPWM |
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