ABSTRACT
Pulse width modulation (PWM)-based drives have been used extensively, and they can control both the frequency and the magnitude of the voltage applied to motors. Using vector control concepts a new digital modulation technique known as space vector pulse width modulation (SVPWM) has become very popular. This chapter presents a digital signal processor (DSP)-based implementation of SVPWM inverters to control three-phase induction machines. It discusses self-contained some of the basics of the vector control and SVPWM methods. The chapter provides experimental measurements and results. Prior to applying the SVPWM signals to the gates of the power transistors, the DSP-based SVPWM signals were analyzed to verify the theory. The SVPWM technique is relatively simple and more efficient than other conventional PWM control methods, such as the sine wave PWM technique. The SVPWM method provides a more efficient use of the direct current supply voltage compared to other PWM methods.
