| 三电平逆变器系统仿真 |
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| 引用本文： | 戴立红,陈雪波,于政军,付勇军.三电平逆变器系统仿真[J].鞍山科技大学学报,2011(4). |
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| 作者姓名： | 戴立红 陈雪波 于政军 付勇军 |
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| 作者单位： | 辽宁科技大学电子与信息工程学院;鞍钢设计研究院;鞍钢股份有限公司冷轧硅钢厂; |
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| 基金项目： | 国家自然科学基金资助项目(60874017) |
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| 摘 要： | 针对三电平逆变器控制策略复杂以及存在中点电位不平衡的问题,对其电压空间矢量脉宽调制(SVPWM)原理进行了研究。采用了一种新的方法———首发矢量为正小矢量的SVPWM算法,将所有扇区都变换到第一扇区,简化了控制算法,给出了第一扇区各个小区间的判断规则,推导了合成参考电压矢量的各个基本电压矢量的作用时间,并介绍了SVPWM信号的产生方法。采取了一种新的控制策略———改变小矢量作用时间的方法解决了中点电位不平衡问题。此外,对系统进行了MATLAB仿真,证实了采取SVPWM算法的有效性和控制策略的优越性。
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| 关 键 词： | 三电平逆变器 电压空间矢量脉宽调制 中点电位平衡 MATLAB仿真 |
Three-level inverter system and its simulation |
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| DAI Li-hong,CHEN Xue-bo,YU Zheng-jun,FU Yong-jun.Three-level inverter system and its simulation[J].Journal of Anshan University of Science and Technology,2011(4). |
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| Authors: | DAI Li-hong CHEN Xue-bo YU Zheng-jun FU Yong-jun |
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| Institution: | DAI Li-hong1,CHEN Xue-bo1,YU Zheng-jun2,FU Yong-jun3(1.School of Electronics and Information Engineering,University of Science and Technology Liaoning,Anshan 114051,China,2.AnSteel Group Investigation & Design Institute,Anshan 114021,3.Cold-Rolling Silicon Steel Mill,AnSteel Co Ltd,Anshan 114024,China) |
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| Abstract: | Aiming at control strategy complication of three-level inverter and potential unbalancing problem of middle point,the principle of space vector pulse width modulation(SVPWM)is deeply refearched.A new method of SVPWM algorithm is adopted by using positive small vector as first active vector.All sectors are transformed to the first sector,which makes the algorithm simple.The judgment rule of the small intervals is given,the action time of basic voltage vectors that compose the reference voltage vectors is der... |
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| Keywords: | three-level inverter space vector pulse width modulation potential balancing of middle point MATLAB simulation |
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