Patent ID: 9484831
Filing Date: 2016-11-01
CPC Classification: H02M,Y02B

Claim Text:
1. An electric-power conversion system comprising: a diode bridge connected to an AC power source; an inverter circuit connected with a rear stage of the diode bridge; a smoothing capacitor connected with a rear stage of the inverter circuit via a rectifying device; a charging switch that is connected with the rear stage of the diode bridge and a front stage of the inverter circuit, that inputs an electric quantity based on an output of the AC power source to the inverter circuit when being turned on, and that cuts off an input of the electric quantity to the inverter circuit when being turned off; an inrush current prevention circuit connected in parallel with the charging switch and having: a discharging switch, one terminal of which is connected between the inrush current prevention switch and the inrush current prevention resistor and other terminal of which is connected with one terminal of the smoothing capacitor, wherein the discharging switch connects the one terminal of the smoothing capacitor with the front stage of the inrush current prevention resistor when being turned on and disconnects the one terminal of the smoothing capacitor from the front stage of the inrush current prevention resistor when being turned off.