Power converter for fuel battery

A power converter for inputting and performing an electrical characteristics transformation on an input voltage from a fuel battery to output an output voltage to a loading, comprising:

• a multiple-phase PWM controller to output a plurality of PWM control signals in accordance with the voltage level of the output voltage;
• a bridge converter to input and output the input voltage in accordance of the PWM control signals;
• and
• a transformer to input and perform an electrical characteristics transformation on the input voltage from the bridge converter to output the output voltage;
• wherein the phase PWM controller further comprises a PWM generator and at least one phase shifter;
• and wherein the phase of the third PWM control signal delays 120 degrees from the phase of the first PWM control signal, the phase of the fifth PWM control signal delays 120 degrees from the phase of the third PWM control signal, the phase of the sixth PWM control signal delays 120 degrees from the phase of the fourth PWM control signal, and the phase of the second PWM control signal delays 120 degrees from the phase of the sixth PWM control signal.