Principle of Pulse Width Modulation

In Chap. 1, the basic concept of pulse width modulation has been introduced briefly. In this chapter, the principle of pulse width modulation will be further discussed. Based on fundamental principle, space vector PWM (SVPWM) and carrier-based PWM (CBPWM) will be presented, respectively, together with the relationship between these two approaches. With the brief introduction of frequency-domain analysis method for PWM, the opportunities and challenges for PWM technologies will be summarized.