Power conversion device, motor drive unit, and electric power steering device
AssigneeNidec Corporation
InventorHiromitsu OHASHI
Life of this patent
Estimating the term…
Abstract
A power conversion device includes a first inverter connected to first ends of the first coil group, a second inverter connected to first ends of the second coil group, a separation relay circuit connected to second ends of the first coil group and second ends of the second coil group to switch between connection and disconnection of the first and second coil groups, a first neutral point relay circuit connected to the second ends of the first coil group to switch between connection and disconnection of the second ends of the first coil group, and a second neutral point relay circuit connected to the second ends of the second coil group to switch between connection and disconnection of the second ends of the second coil group.
Claims9
1-8. (canceled)
A power conversion device which converts power supplied from a power supply into power to be supplied to an n-phase motor including a first coil group and a second coil group, n being an integer equal to three or more, the power conversion device comprising:
- a first inverter connected to first ends of the first coil group;
- a second inverter connected to first ends of the second coil group;
- a separation relay circuit connected to second ends of the first coil group and second ends of the second coil group to switch between connection and disconnection of the first and second coil groups;
- a first neutral point relay circuit connected to the second ends of the first coil group to switch between connection and disconnection of the second ends of the first coil group;
- and
- a second neutral point relay circuit connected to the second ends of the second coil group to switch between connection and disconnection of the second ends of the second coil group.
Dependencies are inferred from the claim text.