Power conversion apparatus

摘要

According to one embodiment, a controller determines the polarity of the input voltage detected by an input voltage detector. Then, when the polarity of the input voltage is positive, the first switch is subject to pulse driving, and when the polarity of the input voltage is negative, the second switch is subject to pulse driving, where the pulse driving is carried out at an on/off timing determined on the basis of the respective detection outputs of an input voltage detector, an input current detector, an output voltage detector, and an output current detector.

主权项

1. A method of converting AC power to a DC output, comprising:
providing a first LC circuit including a first current detector, a power supply, a first capacitor, a first inductor, and a first switch group including a first switch and a first diode that are connected in parallel, wherein the first switch group is connected in series with the first current detector, the power supply, the first capacitor, and the first inductor; providing a second LC circuit including a second current detector, a load, a second capacitor, and a second inductor; wherein the second LC circuit is connected to the first switch group in parallel; providing a second switch group including a second switch and a second diode that are connected in parallel, wherein the second switch group is connected to the first switch group in series through an intermediate node, and a smoothing capacitor and the second switch group are connected in series between ground and the intermediate node; and selectively opening and closing the first and second switches, in response to at least an input polarity of the power supply to provide a DC current to the load.