Power factor correction device

A power factor correction device having a first output line and a second output line to which a load is applied, the device comprising:

• a power input unit generating AC power;
• a first inductor and a second inductor connected to a first input line as one end of the power input unit and a second input line as the other end of the power input unit, respectively;
• a first diode disposed between the first inductor and the first output line;
• a second diode disposed between the second inductor and the first output line;
• a first main switch disposed between a connection terminal between the first inductor and the first diode and the second output line;
• a second main switch disposed between a connection terminal between the second inductor and the second diode and the second output line;
• a first auxiliary switch connected to the first main switch in parallel;
• a first auxiliary inductor connected to the first main switch in parallel and connected to the first auxiliary switch in series;
• a second auxiliary switch connected to the second main switch in parallel;
• and
• a second auxiliary inductor connected to the second main switch in parallel and connected to the second auxiliary switch in series.

A power factor correction device comprising:

• a main switching unit switching AC power from a power input unit to regulate a phase difference between a current and a voltage of the AC power;
• an auxiliary switching unit switched on before the main switching unit is switched on, to form a transmission path for surplus power of the main switching unit;
• an inductor unit accumulating or discharging energy according to a switching operation of the main switching unit;
• and
• an auxiliary inductor unit regulating an amount of current flowing in the auxiliary switching unit according to a switching operation of the auxiliary switching unit.