High performance pulsed power resonant converter for radio frequency applications

This paper presents a high performance three-single phase pulsed power resonant converter for radio frequency applications. The proposed converter is capable to produce as output voltage a series of “long pulses”, each one lasting from 1 ms and duty cycle of 10%. A Repetitive control approach has been used for the converter output voltage regulation, resulting in short rising time, low ripple and smooth transient. Three individual single phase resonant stages are able to be operated independently. Due to this important feature, the converter has a strong ability of rejecting the influence of resonant tank unbalances. The soft-switching of power devices is maintained at full power even in the case of large tank unbalances. Experimental results confirm and validate the feasibility of the converter.