Method and apparatus for power regeneration in an electric vehicle motor drive using a deadtime generator and having continuously variable regeneration control
US5578911A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2260/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor control circuit is disclosed for providing a continuously variable regeneration control. The control circuit includes a microcomputer for generating a power regeneration command signal and a motor command signal, and an armature circuit for use with DC and induction motors. The armature circuit is responsive to the motor command signal for operating the controlled motor in a motor drive mode. The armature circuit is further responsive to the power regeneration command signal for controlling the degree of power regeneration. The armature circuit includes a deadtime generator, responsive to the motor command signal for generating a pair of complementary motor drive signals, the inverted signal of the pair having deadtime. The inverted motor drive signal with deadtime is AND'ed with the power regeneration command signal to produce a power regeneration drive signal. The non-inverted motor drive signal and the power regeneration drive signal are applied to a Class C two-quadrant chopper drive circuit. The chopper circuit alternately and in accordance with these drive signals respectively energizes the motor (motor drive mode) and causes the motor to recharge the battery (power r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.