A PWM Method for Single-Phase Current-Sourced High Frequency AC Link Inverter

A new pulse width modulation (PWM) method for a current-sourced high frequency (HF) ac link inverter is proposed. Many different modulation techniques for voltage sourced HF ac link inverters have been previously investigated in the literature, but modulation methods for current sourced HF ac link inverters are less studied. The PWM and the commutation techniques that are developed for a voltage sourced HF-link are not applicable for a current-sourced HF ac link inverter. Therefore, in this paper, a new PWM method is proposed and the operation principles of a current sourced HF ac link inverter are deeply analyzed. The reasons why this method is suitable for a current sourced HF ac link inverter is discussed in detail as well. The new PWM method is simulated using MATLAB-Simulink.