Novel high voltage capacitor charger for pulsed power modulator

Comparison of topologies suitable for capacitor charging systems

“…Full-bridge topologies are widely used in high-power, high-voltage conversion [4,7]. Figure 2 shows a full-bridge phase-shifted converter.…”

“…Full-bridge topologies are usually used in order to achieve ZVS at the turn-on of primary side switches. In this case, the power losses are greatly reduced, due to the lossless capacitors used as snubbers that act during turning-off [7,8,9,10]. If the connection to the isolating transformer is realized with a LC leg, a resonant behaviour is obtained, leading to the operation with quasi-sinusoidal waveforms.…”

“…The capacitor charging system has to exhibit several features, among others pulse-to-pulse repeatibility, compactness, efficiency and robustness [2,3]. There are many topologies suitable for capacitor charging systems, each one having advantages and disadvantages [4,5,6,7]. This paper presents the comparison between three topologies, a dual switch flyback working in the boundary between CCM (Continuous Conduction Mode) and DCM (Discontinuous Conduction Mode), a full-bridge phase-shifted converter and a half-bridge series resonant converter.…”

Implementation and design of high‐power fast charger for lithium‐ion battery pack

“…A DC-DC full-bridge phase-shifted (FBPS) converter with the current-doubler rectifier features the low switching losses of power switches, and it has a low ripple current at the output side [5][6][7][8][9]. Although the HPFC's topology has been mentioned in literatures [10][11][12][13][14], the designing procedure in practice is not clarified. Moreover, at the HPFC's output side, the ripple current has some negative effects as follows:…”