My recent project is a zero voltage switching pwm current controller for motor drives. Does anyone have experience in designing any such controller?

Zero switching typically defines an SCR soft start where you either turn the device on or off when the voltage crosses 0 volts in an AC circuit. PWM is a completely different concept where you regulate the amplitude and time of a DC pulse to mimic an AC sign wave with the power devices turning on and off the RMS. What you have been asked to design needs some more definition

Are you talking about a resonant-link inverter?

If the input frequency is high enough, one can implement zero voltage switching by waiting from the "ideal" PWM switch point until the next zero crossing. This isn't very useful with 50Hz or 60Hz mains supply, but if one can choose the input power frequency, it does become an option.

Thank you all for the input. I am aware of resonant link converters. I have worked with quasi-resonant converters before. I am not trying to implement such a system here. I am implementing a zero-voltage switching technique for a run of the mill H-bridge motor controller running from a dc link. I completed a spice simulation. I will update when I finish the project.