Method of starting a brushless motor for driving a compressor in a refrigerating cycle
US5723967A · kind A · utility
21Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jul 24, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0209
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method of controlling start of a refrigerant-circulating compressor driven by a brushless motor in a refrigerating cycle, the brushless motor is started in accordance with an asynchronous forced commutation operation without use of rotor position detection signals; and when the rotor position detection signals can be detected a predetermined number of times or more due to synchronous commutations during the forced commutation operation, the asynchronous forced commutation operation is shifted to a synchronous commutation starting operation with the use of the rotor position detection signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.