Given the high complexity of the conventional three-level space-vector pulsewidth modulation (3L SVPWM), simplified SVPWM algorithms are usually adopted instead. However, existing simplifications for 3L SVPWM still have a large computation burden, which limits its applications, e.g., in high-switching-frequency silicon-carbide converters with a short computation period. In this letter, based on a typical simplified algorithm known as the center-aligned 3L SVPWM, a simplified analytical algorithm in abc coordinate is proposed. The reference-voltage-vector adjustment and the calculation of modulation waves are unified based on the center-aligned SVPWM. The modulation waves can be analytically derived by only eight simple equations, without sector determination, calculation, and assignment of dwell times. Consequently, the complexity of implementing the 3L SVPWM is significantly reduced.

中文翻译：

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一种简化的三电平 SVPWM abc 坐标解析算法

鉴于传统的三电平空间矢量脉宽调制（3L SVPWM）的复杂性，通常采用简化的SVPWM算法来代替。然而，现有的 3L SVPWM 简化仍然具有较大的计算负担，这限制了其应用，例如在计算周期短的高开关频率碳化硅转换器中。在这封信中，基于典型的中心对齐3L SVPWM的简化算法，提出了一种abc坐标下的简化解析算法。参考电压矢量调整和调制波的计算基于中心对齐的SVPWM进行统一。调制波可以仅通过八个简单的方程解析导出，无需扇区确定、计算和驻留时间分配。最后，