| 三相SPWM逆变器的谐波分析及其抑制策略 |
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| 引用本文： | 李新君,张敏.三相SPWM逆变器的谐波分析及其抑制策略[J].变频器世界,2007(9):46-49. |
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| 作者姓名： | 李新君 张敏 |
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| 基金项目： | 湖南省教育厅重点科研项目（03A054） |
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| 摘 要： | 对三相电压型SPWM逆变器输出电压和电流谐波及其产生规律进行了讨论。并提出了一种新的易于工程实现的谐波抑制策略,该方法通过正确选择载波频率和在正弦调制波上叠加一个三次波使之成为鞍形波,产生相应的SPWM波形来控制逆变器开关器件的通断从而改善输出波形。数学分析表明有利于降低输出电压波形畸变系数（THD）、改善谐波电流损耗和转矩特性,仿真结果证明了这些措施的有效性和实用性。
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| 关 键 词： | 逆变器 SPWM 谐波分析 抑制策略 |
| 文章编号： | 1561-0330（2007）09-0046-04 |
Analysis and Restraint Strategy of Harmonics for Three-phase Inverter with SPWM |
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| Li Xinjun, Zhang Min.Analysis and Restraint Strategy of Harmonics for Three-phase Inverter with SPWM[J].THE WORLD OF INVERTERS,2007(9):46-49. |
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| Authors: | Li Xinjun Zhang Min |
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| Abstract: | This paper analyses the harmonics in output voltage and current of three-phase voltage-source SPWM inverter and their developing law.A new strategies for restraining harmonics are presented in the paper,the methods adopt the right carrier frequency and the sine wave superimposed a proper three-time harmonics to make it saddle-shaped wave, produce SPWM waveform to control the inverter switching devices for the on and off.Mathematical analysis show to wave form of output voltage and current are improved.The simulation results indicate the feasibility and practicability of the presented strategies. |
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| Keywords: | Inverter SPWM Harmonic Restraint strategy |
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