| 大功率逆变器的非对称PWM方法 |
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| 引用本文： | 张冰,邱进,何妍. 大功率逆变器的非对称PWM方法[J]. 电工标准与质量, 2009, 0(1) |
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| 作者姓名： | 张冰 邱进 何妍 |
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| 作者单位： | 国家电网电力科学研究院; |
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| 摘 要： | 介绍一种非对称PWM方法,它适用于灵活交流输电系统(FACTS)的大功率逆变器控制.该方法的特点是通过增加脉冲波形中不对称开关角的自由度数,来实现对特定谐波幅度和相位的直接控制.在较低的开关频率下,该方法可应用于大功率有源滤波器.通过Simplorer对基于该方法的并联补偿谐波电流的工作方式进行仿真,证明其有效性.
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| 关 键 词： | 脉冲宽度调制 逆变器 灵活交流输电系统 谐波补偿 |
Research on a new unsymmetrical PWM technique for large capacity inverter |
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| ZHANG Bing,QIU Jin,HE Yan. Research on a new unsymmetrical PWM technique for large capacity inverter[J]. Journal of Changsha University of Electric Power(Natural Science Edition), 2009, 0(1) |
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| Authors: | ZHANG Bing QIU Jin HE Yan |
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| Affiliation: | Electric Power Research Institute of SGCC;Wuhan 430074;China |
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| Abstract: | A new unsymmetrical PWM technique is introduced in this paper,which is particularly applied to high-power inverter control in flexible AC transmission systems(FACTS).The proposed pulse pattern possesses only half-wave inverse symmetry,but its quarter-wave symmetry is absent,the freedom degree of switching angles is doubled,the specific harmonics are thus controlled by their amplitudes and phase angles.In the lower switching frequency,the technique is designed for use in an active power filter.The good perfo... |
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| Keywords: | pulse width modulation inverter flexible alternative transmission systems harmonics compensation |
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