An Improved Carrier-Based SVPWM Method Using Leg Voltage Redundancies in Generalized Cascaded
An Improved Carrier-Based SVPWM Method Using Leg Voltage Redundancies in Generalized Cascaded
复制标题
广义级联中利用支路电压冗余的改进的基于载波的 SVPWM 方法
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
D. Hyun
中科院分区：
文献类型：
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作者：
D. Kang;Yo;B. Suh;C. Choi;D. Hyun
基于载波的空间矢量脉宽调制(SVPWM)技术被认为是一种简单高效的脉宽调制技术，也可用于多电平逆变器。该方法最初设计用于两电平逆变器，并发展为二极管钳位的多电平逆变器结构。然而，值得注意的是，在级联多电平逆变器中，它也导致了较差的开关利用率。本文介绍了一种改进的载波空间矢量脉宽调制(SVPWM)方案，该方案既具有传统载波SVPWM的优点，又能通过考虑支路电压冗余的三角载波的重新分布实现最优的开关利用率，完全适用于级联型多电平逆变器拓扑结构。实验结果表明，新的脉宽调制方法具有良好的性能。
The carrier-based space vector pulse width modula- tion (SVPWM), which is considered as simple and efficient PWM technology, can be also used in multilevel inverters. The method was originally designed for the two-level inverter and developed to the diode-clamped multilevel inverter structure. However it may be noted that it also cause bad switch utilization in cascaded mul- tilevel inverter. This paper introduces an improved carrier-based SVPWM scheme, which is fully suitable for cascaded multilevel in- verter topologies because it can achieve the optimized switch uti- lization through the redistribution of the triangular carrier waves considering leg voltage redundancies while having the advantages of the conventional carrier-based SVPWM. Using experimental re- sults, the superior performance of new PWM method is shown.