| Summary: | 碩士 === 國立臺北科技大學 === 電力電子產業研發碩士專班 === 99 === The aim of this thesis is to design a high power battery charger by the PWM control ICs manufactured by Texas Instruments. The charger is composed of two converters in cascade, namely the AC-DC converter with interleaved power factor correction (PFC) and isolated DC-DC converter, and these converters are realized by the PWM controller UCC28070 and UCC3895 respectively. In order to enlarge rated power, the boost-type PFC contains multiple characteristics including two-phase interleaved, average current-mode and continuous conduction mode. Such characteristic can enhance efficiency and reduce ouput current ripple, then the size of energy storage inductor and output capacitor is reduced. The isolated full-bridge DC-DC converter is implemented by phase-shifting the switching of one half-bridge with respect to the other. It achieves resonant zero-voltage switching through suitable leakage inductance of the transformer to enhance the efficiency of the converter.
The specification of proposed charger is input AC110V/60Hz, power factor more than 0.95 and 49V/500W output. Finally, some experimental results are employed to verify the performance of proposed charger.
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