Controls to incorporate three-phase motors into vehicles
US6538408B2 · kind B2 · utility
2Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Apr 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of motors for use in driving accessories on a vehicle, are each powered by three-phase current. A single controller controls the supply three-phase current to the plurality of motors. In another aspect of the invention, pseudothree-phase current is created from a direct current voltage source. A chopping circuit chops the voltage into a plurality of pulses, and a phase shift circuit then creates phase-shifted power signals from those pulses. The present invention thus enables the use of three-phase alternating current motors on a vehicle to drive accessories. This reduces the cost and size of the required motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.