Open delta motor drive with integrated recharge
US8415904B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2010 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Jul 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated motor drive and battery recharge apparatus includes a battery, an electric motor having N separate motor windings each having a first and a second leg, a contactor having a plurality M of poles, each pole having a first side and a second side, the inverter having 2N switching poles and a capacitor each coupled in parallel with the battery, and PWM control circuitry configured to control the state of each switching pole. Each leg of each motor winding is coupled to a phase node of a corresponding inverter switching pole, at least two of the motor winding legs (or taps thereof) are coupled to the corresponding first sides of the contactor poles, a power source/sink is coupled to the corresponding second sides of the contactor poles, and in one aspect a capacitor is coupled between each pair of contactor poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.