| 发明名称 | Continuously variable dynamic brake for a locomotive | ||
| 摘要 | This disclosure is directed to a traction motor drive system. The traction motor drive system may include a field winding subsystem comprising a field winding associated with a traction motor. The traction motor drive system may also include an armature subsystem arranged in parallel with the field winding subsystem. The armature subsystem may include an armature having first and second armature terminals and a grid resistor selectively electrically coupled in series with the armature. The armature subsystem may also include an armature chopper arranged in parallel with the grid resistor and electrically coupled in series with the armature. The armature chopper may be configured, when the grid resistor is electrically coupled to the armature, to conditionally conduct current to the armature. | ||
| 申请公布号 | US8820248(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201113330338 | 申请日期 | 2011.12.19 |
| 申请人 | Progress Rail Services Corp | 发明人 | Kral John Franklin;Beltramin Sidarta Fornari |
| 分类号 | B61C3/00 | 主分类号 | B61C3/00 |
| 代理机构 | Finnegan, Henderson, Farabow, Garrett & Dunner LLP | 代理人 | Finnegan, Henderson, Farabow, Garrett & Dunner LLP |
| 主权项 | 1. A traction motor drive system, comprising: a field winding subsystem comprising a field winding associated with a traction motor; and an armature subsystem, arranged in parallel with the field winding subsystem and comprising: an armature comprising first and second armature terminals; a grid resistor selectively electrically coupled in series with the armature; and an armature chopper, arranged in parallel with the grid resistor and electrically coupled in series with the armature and configured, when the grid resistor is electrically coupled to the armature, to conditionally conduct current to the armature. | ||
| 地址 | Albertville AL US | ||