Comparative analysis of 2nd and 4th order resonant based capacitor charging power supplies

Capacitor charging power supply (CCPS) can be used as a primary charging source for power modulator. The work has been carried out to compare the two resonant based (series and forth order LCLC) CCPS for a power modulator. The above mentioned resonant topologies are mathematically analyzed and the work carried out to calculate resonant components and other parameters in a power supply. The experimental set up is prepared to verify the results of simulation with experimental. In this paper compared the peak current flowing through IGBT (Insulated gate bipolar transistor) in the inverter circuit of CCPS. It is observed that the peak current flowing through switches in the 4^th order topology is two times lesser than 2^nd order CCPS. The advantage with 4^th order resonant is it can utilize both soft switching techniques like ZV (Zero voltage) and ZC (Zero current) switching as compared to series resonant based CCPS. The results are compared and found satisfactorily of simulation with experimental.