Charging apparatus for electric vehicle
A charging apparatus for an electric vehicle has a small-sized simple structure, and charges a battery of the electric vehicle upon receiving electricity from various kinds of power sources. The charging apparatus includes a motor, an inverter, an AC power input stage, a power factor, a link capacitor, a switch network, and a controller. The AC power input stage receives an AC input power from a single-phase AC power or a multi-phase AC power. The power factor corrector has a single three-leg half bridge circuit receiving the AC input power through the AC power input stage, and the link capacitor is charged through at least one of combinations of the power factor corrector, the motor, and the inverter. The controller controls the power factor corrector and the switch network based on a condition of AC input power received through the AC power input stage.
1. A charging apparatus for an electric vehicle, the charging apparatus comprising:
a motor configured to generate a power to drive the electric vehicle;
an inverter configured to supply a power to the motor;
an alternating current (AC) power input stage configured to receive an AC input power from one of a single-phase AC power or a multi-phase AC power;
a power factor corrector having a single three-leg half bridge circuit configured to receive the AC input power through the AC power input stage;
a link capacitor configured to be charged through at least one of combinations of the power factor corrector, the motor, and the inverter;
a switch network including a first switch and a second switch, wherein the first switch is configured to connect an AC power input line or a neutral line of the AC power input stage to the power factor corrector, and the second switch is configured to selectively connect the AC power input stage to the power factor corrector, the link capacitor, the motor, or the inverter; and
a controller configured to control the power factor corrector and the switch network based on a condition of the AC input power received through the AC power input stage.
2. The charging apparatus according to claim 1 , wherein the first switch is provided to the AC power input stage, and is turned on or turned off so as to cope with a multi-phase condition or a single-phase condition of the AC input power.
3. The charging apparatus according to claim 2 , wherein the switch network further includes:
a third switch having one end connected to a neutral point of the motor.
4. The charging apparatus according to claim 3 , wherein the switch network further includes:
a fourth switch configured to connect the power factor corrector to the AC power input stage or the third switch.
5. The charging apparatus according to claim 4 , wherein the switch network further includes:
a fifth switch disposed between the power factor corrector and the link capacitor.
6. The charging apparatus according to claim 5 , wherein the switch network further includes:
a sixth switch disposed between a first end and a second end of the link capacitor; and
a seventh switch disposed between a first end and a second end of a converter.
7. The charging apparatus according to claim 6 , wherein:
a first leg of the power factor corrector is connected to a first AC power input line of the AC power input stage;
a second leg of the power factor corrector is connected to a second AC power input line or a neutral line of the AC power input stage through the first switch; and
a third leg of the power factor corrector is connected to a third AC power input line of the AC power input stage or the third switch through the fourth switch.
8. The charging apparatus according to claim 1 , wherein the condition of the AC input power includes a multi-phase condition and a single-phase condition of the AC input power.
9. The charging apparatus according to claim 1 , wherein the condition of the AC input power includes a symmetric power condition and an asymmetric power condition of the AC input power.
10. A charging apparatus for an electric vehicle, the charging apparatus comprising:
a motor configured to generate a power to drive the electric vehicle;
an inverter configured to supply a power to the motor;
an alternating current (AC) power input stage configured to receive an AC input power from one of a single-phase AC power or a multi-phase AC power;
a power factor corrector having a single three-leg half bridge circuit configured to receive the AC input power through the AC power input stage;
a link capacitor to be charged through at least one of combinations of the power factor corrector, the motor, and the inverter;
a switch network including a first switch and a second switch, wherein the first switch is configured to connect an AC power input line or a neutral line of the AC power input stage to the power factor corrector, and the second switch is configured to selectively connect the AC power input stage to the power factor corrector, the link capacitor, the motor, or the inverter; and
a controller configured to control the power factor corrector and the switch network based on a condition of the AC input power received through the AC power input stage,
wherein the switch network further includes:
a third switch having one end connected to a neutral point of the motor; and
a fourth switch configured to connect the power factor corrector to the AC power input stage or the third switch.
11. The charging apparatus according to claim 10 , wherein the first switch is provided to the AC power input stage, and is turned on or turned off so as to cope with a multi-phase condition or a single-phase condition of the AC input power.
12. The charging apparatus according to claim 11 , wherein the switch network further includes:
a fifth switch disposed between the power factor corrector and the link capacitor.
13. The charging apparatus according to claim 12 , wherein the switch network further includes:
a sixth switch disposed between a first end and a second end of the link capacitor; and
a seventh switch disposed between a first end and a second end of a converter.
14. The charging apparatus according to claim 13 , wherein:
a first leg of the power factor corrector is connected to a first AC power input line of the AC power input stage;
a second leg of the power factor corrector is connected to a second AC power input line or a neutral line of the AC power input stage through the first switch; and
a third leg of the power factor corrector is connected to a third AC power input line of the AC power input stage or the third switch through the fourth switch.
15. The charging apparatus according to claim 10 , wherein the condition of the AC input power includes a multi-phase condition and a single-phase condition of the AC input power.
16. The charging apparatus according to claim 10 , wherein the condition of the AC input power includes a symmetric power condition and an asymmetric power condition of the AC input power.
17. A charging apparatus for an electric vehicle, the charging apparatus comprising:
a motor configured to generate a power to drive the electric vehicle;
an inverter configured to supply a power to the motor;
an alternating current (AC) power input stage configured to receive at least one AC input power from one of a single-phase AC power or a multi-phase AC power;
a power factor corrector having a single three-leg half bridge circuit configured to receive the at least one AC input power through the AC power input stage;
a link capacitor to be charged through at least one of combinations of the power factor corrector, the motor, and the inverter;
a switch network including a first switch and a second switch, wherein the first switch is configured to connect an AC power input line or a neutral line of the AC power input stage to the power factor corrector, and the second switch is configured to selectively connect the AC power input stage to the power factor corrector, the link capacitor, the motor, or the inverter; and
a controller configured to control the power factor corrector and the switch network based on a condition of the at least one AC input power received through the AC power input stage,
wherein the switch network further includes:
a third switch including one end connected to a neutral point of the motor;
a fourth switch configured to connect the power factor corrector to the AC power input stage or the third switch;
a fifth switch disposed between the power factor corrector and the link capacitor;
a sixth switch disposed between a first end and a second end of the link capacitor; and
a seventh switch disposed between a first end and a second end of a converter.
18. The charging apparatus according to claim 17 , wherein the first switch is provided to the AC power input stage, and is turned on or turned off so as to cope with a multi-phase condition or a single-phase condition of the received at least one AC input power.
19. The charging apparatus according to claim 18 , wherein:
a first leg of the power factor corrector is connected to a first AC power input line of the AC power input stage;
a second leg of the power factor corrector is connected to a second AC power input line or a neutral line of the AC power input stage through the first switch; and
a third leg of the power factor corrector is connected to a third AC power input line of the AC power input stage or the third switch through the fourth switch.
20. The charging apparatus according to claim 18 , wherein the condition of the received AC input power includes a multi-phase condition and a single-phase condition of the at least one AC input power received through the AC power input stage.
21. The charging apparatus according to claim 18 , wherein the condition of the received AC input power includes a symmetric power condition and an asymmetric power condition of the at least one AC input power received through the AC power input stage.