The space vector pulsewidth modulation (SVPWM) techniques enhance the performance of multilevel multiphase inverters. With multilevel (three-phase) inverters and with (two-level) multiphase inverters, it is widely accepted that the typical SVPWM strategies have an equivalent carrier-based pulsewidth modulation (CBPWM) counterpart, which produces identical results. However, the conclusions reached in the articles that show these cannot be applied, nor even extended, to SVPWM techniques with more than two levels and three phases. This article shows that the most widely accepted multilevel multiphase SVPWM techniques have a fully equivalent CBPWM counterpart, which consists of a phase disposition pulsewidth modulation with an appropriate zero-sequence injection scheme. Closed-form expressions to calculate the zero sequences are provided. The proposed modulation techniques are simulated and then implemented in a field-programmable gate array, showing that the equivalent CBPWM techniques produce identical results as the original SVPWM ones, but with a significant reduction of hardware requirements. The proposed methodology can be generalized to other multilevel multiphase SVPWM techniques.

中文翻译：

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基于载波的 PWM 相当于多级多相空间矢量 PWM 技术


空间矢量脉宽调制（SVPWM）技术增强了多电平多相逆变器的性能。对于多电平（三相）逆变器和（两电平）多相逆变器，人们普遍认为典型的 SVPWM 策略具有等效的基于载波的脉宽调制 (CBPWM) 策略，可产生相同的结果。然而，文章中得出的结论表明这些不能应用于，甚至不能扩展到超过两级和三相的SVPWM技术。本文表明，最广泛接受的多级多相 SVPWM 技术具有完全等效的 CBPWM 技术，其中包含具有适当零序注入方案的相位配置脉宽调制。提供了用于计算零序列的闭合形式表达式。所提出的调制技术经过仿真，然后在现场可编程门阵列中实现，结果表明等效的 CBPWM 技术产生与原始 SVPWM 相同的结果，但硬件要求显着降低。所提出的方法可以推广到其他多级多相 SVPWM 技术。