Power factor corrector correcting a power factor of an alternating current (AC) voltage
A power factor corrector correcting the power factor of an alternating current (AC) voltage is disclosed. A power factor correcting unit corrects the power factor of the AC voltage. A smoothing unit smoothes a power factor corrected voltage and includes a film condenser and a plurality of electrolytic condensers. A rectified voltage is applied to one end of an inductor. One end of a switch is connected to the other end of the inductor, and the other end of the switch is earthed. One end of a diode is connected to one end of the switch. One end of a film condenser is connected to the other end of the diode, and the other end of the film condenser is earthed. An electrolytic condenser is parallel-connected to the film condenser.
1. A power factor corrector correcting a power factor of an alternating current (AC) voltage, the power factor corrector comprising:
a power factor correcting unit correcting a power factor of an AC voltage; and
a smoothing unit smoothing a power factor corrected voltage, wherein the smoothing unit comprises a film condenser and a plurality of electrolytic condensers,
wherein the plurality of electrolytic condensers have a same capacitance,
wherein the plurality of electrolytic condensers are parallel-connected,
wherein the plurality of electrolytic condensers have a limit ripple current that is determined based on a number of the plurality of electrolytic condensers.
2. The power factor corrector according to claim 1 , wherein the plurality of electrolytic condensers have the limit ripple current that is further determined based on a capacitance tolerance of the plurality of electrolytic condensers.
3. The power factor corrector according to claim 1 , wherein the power factor correcting unit is a boost converter that comprises a switch.
4. The power factor corrector according to claim 3 , wherein a capacitance of the film condenser is determined by a switching frequency of the switch.
5. The power factor corrector according to claim 4 , wherein a capacitance of the film condenser is determined by a value of a parasitic resistance of the plurality of electrolytic condensers.
6. A power factor corrector correcting a power factor of an AC voltage, the power factor corrector comprising:
an inductor to one end of which a rectified voltage is applied;
a switch, wherein one end of the switch is connected to the other end of the inductor, and the other end of the switch is earthed;
a diode, wherein one end of the diode is connected to one end of the switch;
a film condenser, wherein one end of the film condenser is connected to the other end of the diode, and the other end of the film condenser is earthed; and
a plurality of electrolytic condensers parallel-connected to the film condenser,
wherein the plurality of electrolytic condensers have a same capacitance,
wherein the plurality of electrolytic condensers have a limit ripple current that is determined based on a number of the plurality of electrolytic condensers.
7. The power factor corrector according to claim 6 , wherein the plurality of electrolytic condensers have the limit ripple current that is further determined based on a capacitance tolerance of the plurality of electrolytic condensers.
8. The power factor corrector according to claim 7 , wherein a capacitance of the film condenser is determined by a value of a parasitic resistance of the plurality of electrolytic condensers.
9. A method of operating a power factor corrector correcting a power factor of an AC voltage, the method comprising:
correcting a power factor of an AC voltage; and
smoothing a power factor corrected voltage by using a film condenser and a plurality of electrolytic condensers,
wherein the plurality of electrolytic condensers have a same capacitance,
wherein the plurality of electrolytic condensers have a limit ripple current that is determined based on a number of the plurality of electrolytic condensers.
10. The method according to claim 9 , wherein the plurality of electrolytic condensers have the limit ripple current that is further determined based on a capacitance tolerance of the plurality of electrolytic condensers.
11. The method according to claim 9 , wherein the correcting of the power factor of the AC voltage comprises correcting the power factor by using a boost converter that comprises a switch.
12. The method according to claim 11 , wherein a capacitance of the film condenser is determined by a switching frequency of the switch.
13. The method according to claim 12 , wherein a capacitance of the film condenser is determined by a value of a parasitic resistance of the plurality of electrolytic condensers.