| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion apparatus where inductance of a reactor is reduced without using a large-capacity capacitor for a current type inverter device to thereby enable miniaturization of the reactor. <P>SOLUTION: A gate signal generation circuit (21) of a power conversion apparatus receives input of an output signal of a gain circuit (20), a triangular wave signal of a triangular wave signal generation circuit (17), and a sin wave signal whose frequency is double of a commercial frequency and changes an amplitude of the triangular wave signal on the basis of a current that returns from a switching circuit (24) to a solar cell module (1), thereby changing an ON/OFF time of a gate of a switching element (2) of a step-down converter (23) with respect to distortion of an output voltage. An inverter part (25) formed by the switching circuit (24) and a PWM control circuit (22) which drive-controls the switching circuit (24) converts DC power into AC power. <P>COPYRIGHT: (C)2013,JPO&INPIT |
