Patent ID: 8773875

Claim:
A power conversion apparatus comprising: a first LC circuit that includes a first capacitor and a first inductor connected in series to each other and is connected to an AC power supply; a first switch that connects, at a terminal of the first switch, to a terminal of the AC power supply through the first LC circuit and connects, at an other terminal of the first switch, to an other terminal of the AC power supply; a second switch that connects, at a terminal of the second switch, to a connection point between the terminal of the first switch and the first LC circuit; a smoothing capacitor that connects, at a terminal of the smoothing capacitor, to an other terminal of the second switch and connects, at an other terminal of the smoothing capacitor, to a connection point between the other terminal of the first switch and the other terminal of the AC power supply; a second LC circuit connected to a second capacitor and a second inductor in series, wherein a terminal of the second LC circuit is connected to a connection point between the first switch and the second switch, and an other terminal of the second LC circuit is connected to a load and forms a series circuit between the connection point between the first switch and the second switch and the load; and a controller that outputs a first pulse signal for pulse-driving the first switch when a voltage polarity of the AC power supply is positive, and outputs a second pulse signal for pulse-driving the second switch when the voltage polarity of the AC power supply is negative.