A general space vector PWM control algorithm for multilevel inverters
A general space vector PWM control algorithm for multilevel inverters
复制标题
DOI：
10.1109/apec.2003.1179268
复制
发表时间：
2003-02
期刊：
影响因子：
--
通讯作者：
Sanmin Wei;Bin Wu;Fahai Li;Congwei Liu
中科院分区：
文献类型：
--
作者：
Sanmin Wei;Bin Wu;Fahai Li;Congwei Liu
针对多电平逆变器中存在大量空间矢量和冗余开关状态导致的计算复杂度问题，提出了一种简单通用的空间矢量PWM算法。基于该算法，可以很容易地确定参考电压矢量的位置，并且使驻留时间的计算变得非常简单。更重要的是，该算法具有通用性，可直接应用于任何电压等级的级联h桥逆变器。此外，为了使总谐波失真最小化，提出了一种新的开关顺序——大-小交替（LSA）。为了验证算法的有效性，搭建了一个7电平级联h桥逆变器驱动系统，并给出了实验结果。
To solve the problem of computational complexity in multilevel inverters due to the large number of space vectors and redundant switching states, a simple and general space vector PWM algorithm is proposed. Based on this algorithm, the location of the reference voltage vector can be easily determined and the calculation of dwell times becomes very simple. More importantly, the proposed algorithm is general and can be directly applied to the cascaded H-bridge inverter of any voltage levels. In addition, a new switching sequence, large-small alternation (LSA), is proposed for the minimization of total harmonic distortion. To verify the algorithms, a 7-level cascaded H-bridge inverter drive system was constructed and experimental results are provided.