| 应用于NPC型逆变器的三电平不连续PWM方法 |
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| 引用本文： | 罗晓飞,孙彦广,宋克俭,石志学.应用于NPC型逆变器的三电平不连续PWM方法[J].北京科技大学学报,2016(4):581-588. |
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| 作者姓名： | 罗晓飞 孙彦广 宋克俭 石志学 |
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| 作者单位： | 冶金自动化研究设计院,北京,100071 |
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| 基金项目： | 国家国际科技合作专项;钢铁企业智能微电网技术研究资助项目(2013DFA10810) |
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| 摘 要： | 针对低频大功率二极管中点钳位( NPC)型逆变器控制系统的不连续空间矢量脉宽调制原理及控制策略的研究，提出三电平不连续空间矢量脉宽调制方法，相比于传统三电平空间矢量脉宽调制方法，在相同的开关频率下，此方法可以显著降低逆变器的开关损耗。同时，文中对三电平逆变器的中点电压不平衡问题以及在现场应用中可能出现的PN电平跳变问题进行分析，并提出解决方法。最后，针对本文提出的调制方法做中点电压的平衡控制，给出对于该算法基于仿真和实验的验证。
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| 关 键 词： | 逆变器 脉冲宽度调制 中点钳位型 跳变 控制策略 |
Discontinuous PWM strategy considering neutral-point potential balance for a three-level NPC inverter |
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| LUO Xiao-fei,SUN Yan-guang,SONG Ke-jian,SHI Zhi-xue.Discontinuous PWM strategy considering neutral-point potential balance for a three-level NPC inverter[J].Journal of University of Science and Technology Beijing,2016(4):581-588. |
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| Authors: | LUO Xiao-fei SUN Yan-guang SONG Ke-jian SHI Zhi-xue |
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| Institution: | LUO Xiao-fei;SUN Yan-guang;SONG Ke-jian;SHI Zhi-xue;Automation Research and Design Institute of Metallurgical Industry; |
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| Abstract: | A novel discontinuous space-vector pulse width modulation ( DSVPWM) strategy is proposed for a three-level neutral-point-clamped (NPC) voltage source inverter. Compared with traditional space-vector pulse width modulation (SVPWM), the pro-posed strategy can largely reduce the switching losses of the inverter at the same switching frequency. Then, solutions to the imbalance of neutral-point voltage and the PN voltage jumps during application are proposed in this paper. At last, the three-level DSVPWM strategy is verified by simulation and experiment. |
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| Keywords: | inverters pulse width modulation neutral-point-clamped jump control strategies |
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