Continuous field control of series wound motors
US4730151A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Jan 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for operating an electronic control system for an operator controlled, electrically driven vehicle. The vehicle being powered by a direct current electric traction motor. The electronic control system includes a power source, a variable mark-space ratio power regulator responsive to a motor current command signal developed in response to the position of an accelerator, a direction selection means for providing signals indicative of the direction of motion of the vehicle, and a braking signal responsive to brake position. The electronic control system implements operation of the motor automatically in a propulsion mode, a regenerative mode, and a plug mode. The propulsion mode is either a series connected mode or a separately excited mode. The regenerative mode simulates the retarding effects of an internal combustion engine driven vehicle, while recover the kinetic energy of the vehicle by the generation of current to recharge the power source. The regenerative mode includes a regenertive coast mode and a regenerative brake mode. The plug mode provides a greater retarding force than the regenerative mode. The plug mode includes a plug coast mode and a plug brake mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.