Motor controller and electric power steering device using the same
US8981704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0487
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Provided are a motor controller for suppressing a torque pulsation with a simple configuration and obtaining a sufficient output torque in the case of an open-type fault occurring in any one of windings of a motor and inverters, and an electric power steering device using the motor controller. In the motor controller for controlling a current supplied from and a voltage applied from a power source with respect to the motor including winding sets of a plurality of systems, when a fault determination unit (31) determines the occurrence of the open-type fault, the supply of the currents to the windings of one of the systems in which the fault has occurred is stopped by control performed on switching elements included in the inverter of the faulty system, whereas the supply of the currents to the windings of the normal system in which the fault has not occurred is continued.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.