【摘要】 在深入分析空间矢量脉宽调制机理的基础上,指出了空间矢量调制和规则采样SPWM、谐波注入脉宽调制、线电压调制的内在联系,并给出了空间矢量调制的调制波通用表达式。其次,通过分析两个零矢量的作用方式,将不连续调制和连续调制统一起来。此外,文中还介绍了一种可以使开关损耗较连续调制降低约50%的不连续调制策略。更多还原

【Abstract】 Based on an in-depth analysis of mechanism of the space vector pulse width modulation, the inherent relationship a-mong SVPW, regular sample SPWM, harmonic injection PWM and line voltage modulation is presented. And the general expression of modulation waveform of SVPWM is deduced. Secondly, the continuous modulation and discontinuous modulation was unified by analyzing the action of the two zero vectors. Furthermore, a new low switching loss discontinuous mod-tion strategy,which could decrease switching loss about 50% ,is also introduced.更多还原