Dm. Divan et al., A SYNCHRONIZED RESONANT DC LINK CONVERTER FOR SOFT-SWITCHED PWM, IEEE transactions on industry applications, 29(5), 1993, pp. 940-948
A resonant dc link scheme for soft-switched inverters, where the link
oscillation can be synchronized with inverter modulation, is proposed.
The scheme is able to operate with reduced commutation losses at a hi
gh switching frequency. Synchronization capability allows development
of suitable modulation techniques that ensure improved waveform accura
cy. The system performance and control strategies have been verified b
oth by simulation and by experimental tests, confirming the interestin
g features of the proposed scheme.