United States Patent
US Patent 5341075: Combined motor drive and battery recharge system
US 5341075 · granted 1994-08-23
| Patent Number | 5341075 |
|---|---|
| Title | Combined motor drive and battery recharge system |
| Filed | 1993-03-10 |
| Granted | 1994-08-23 |
| Inventor(s) | Alan G. Cocconi |
| Assignee | AC Propulsion Inc |
| CPC Classification | B60L53/20, B60L53/30, H02J7/00 |
| Number of Claims | 4 |
Abstract
A combined battery recharge and motor drive system employs an essentially conventional polyphase pulse width modulated (PWM) inverter and a polyphase motor which may be reconnected to operate in a battery recharge mode. Single phase or three-phase AC power from an external source is applied across the reconfigured circuit, and the inverter switches are then controlled to operate as a boost switching regulator. Electrostatic (Faraday) shielding techniques and construction allow extremely small ground currents for improved safety an GFI outlet compatibility.
Claims Summary
1. An integrated motor drive and power source recharging system comprising:a polyphase electric motor having a plurality of motor windings;