FREQUENCY MODULATED PWM FOR VOLTAGE SOURCE INVERTERS

摘要

The frequency modulation (FM) technique is proposed for the operation of voltage source static inverters. In conventional pulse width modulation (PWM) techniques the magnitude of carrier frequency and its multiples are significantly high. In the sine PWM method, at 0.5 modulation index the fundamental is 50/100 and the carrier component is more than 100/100 in magnitude of the supply voltage. The ratio of the carrier to fundamental magnitude increases further with reduction of the modulation index.