Motor control apparatus
US8633664B2 · kind B2 · utility
7Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2011 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter circuit is provided for a plurality of coils and includes switching elements forming switching element pairs in correspondence to each phase of the coils. Current detection sensors detect currents flowing low-side FETs, respectively. A control circuit has a failure detection section, which detects arm short-circuit failure of the element pairs based on current values detected by the current detection sensors at timing when one or the other of all the low-side FETs and all the high-side FETs are turned on and turned off, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.