Electronic control device and control method thereof
US10404202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2016 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Aug 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is an electronic control device including inverter circuits of first and second systems for driving a multiphase motor with first and second coil sets by use of upper and lower arm switching elements selectively controlled to be ON/OFF in each coil of the first and second coil sets. The upper arm switching elements of all phases in the inverter circuit of the first system are turned ON to apply a high potential to the first coil set, and the lower arm switching elements of all phases in the inverter circuit of the second system are turned ON to control the second coil set to a low potential. When a value of current flowing through the lower arm switching element in the inverter circuit of the second system is a predetermined value or more, it is determined that a power supply failure has occurred between the first and second systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.