Pulse-width modulation (PWM) is one of the core technologies of power electronic converters and it was initially proposed to allow inverters to output sinusoidal AC voltage and current. Up to now, it has been applied to the AC–AC matrix converters and PWM rectifiers. Although PWM has been proposed for nearly 60 years since 1964, due to the continuous emergence of various new power electronic converters and the increasing requirements for the quality of converters’ output voltage and current, PWM is still one of the most popular research directions in the field of power electronics, and continues to attract attention and interest of researchers.
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