Electric power steering apparatus
Provided is an electric power steering device including: a DC power supply; a motor; an inverter circuit configured to convert a DC power output from the DC power supply to an AC power and output the AC power after the conversion to the motor; and a filter circuit, which is provided between the DC power supply and the inverter circuit, and includes a choke coil. The choke coil includes: a core; and one or more conductor sets each including two conductors wound in parallel on the core. A tip on one side of each of the two conductors included in each of the conductor sets is connected to the DC power supply side, and a tip on another side of each of the two conductors is connected to the inverter circuit side.
1. An electric power steering device, comprising:
a DC power supply;
a motor;
an inverter circuit configured to convert a DC power output from the DC power supply to an AC power and output the AC power after the conversion to the motor; and
a filter circuit, which is provided between the DC power supply and the inverter circuit, and includes a choke coil,
wherein the choke coil includes:
a core; and
one or more conductor sets each including two conductors wound in parallel on the core, and
wherein a tip on one side of each of the two conductors included in each of the one or more conductor sets is connected to a same terminal of the DC power supply side, and a tip on another side of the each of the two conductors is connected to a same terminal of the inverter circuit side.
2. The electric power steering device according to claim 1 ,
wherein the choke coil includes a normal mode coil, and
wherein the choke coil includes one conductor set as the one or more conductor sets.
3. The electric power steering device according to claim 1 ,
wherein the choke coil includes a common mode coil,
wherein the choke coil includes two conductor sets as the one or more conductor sets, and
wherein the two conductor sets are wound on the core under a state in which the two conductor sets are opposed to each other.
4. The electric power steering device according to claim 1 , wherein the two conductors are each formed into a flat shape.
5. The electric power steering device according to claim 2 , wherein the two conductors are each formed into a flat shape.
6. The electric power steering device according to claim 3 , wherein the two conductors are each formed into a flat shape.
7. The electronic power steering device according to claim 1 , wherein the choke coil is connected in series between the DC power supply side and the inverter circuit side.
8. The electronic power steering device according to claim 1 , wherein the choke coil is configured to supply the DC power to the inverter circuit side to drive the motor.
9. The electronic power steering device according to claim 1 , wherein the core includes a cylindrical core portion and the two conductors are wound on the same cylindrical core portion.