Title:
TRACTION SYSTEMS FOR ELECTRICALLY POWERED VEHICLES
Document Type and Number:
WIPO Patent Application WO/2011/053514
Kind Code:
A3
Abstract:
Fixed frequency, fixed duration pulse streams are used to control power switches for one or more electrical motors of electrically powered vehicles or hybrid vehicles having one or more electric motors. The advantages of a pulse system are increased power efficiency and system simplicity over analog systems. The capability of system calibration with a single pulse allows the system to be used under any conditions, and real time adaptation to changes in conditions. Such system and methods provide much improved acceleration over other electrical systems, by making the best use of the coefficient of starting or static friction. The systems and methods provide a non slip traction control system, and the use of an off state in the pulse stream is superior to the use of braking systems for the same purpose, which waste power and cause mechanical wear. In addition, related computer program products are described.
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Inventors:
JALBOUT BASSAM D (CA)
WONG BRIAN (CA)
WONG BRIAN (CA)
Application Number:
PCT/US2010/053653
Publication Date:
December 27, 2012
Filing Date:
October 22, 2010
Export Citation:
Assignee:
LSI INDUSTRIES INC (US)
JALBOUT BASSAM D (CA)
WONG BRIAN (CA)
JALBOUT BASSAM D (CA)
WONG BRIAN (CA)
International Classes:
B60L15/08; B60K28/16; B60L15/20
Foreign References:
| EP1982886A2 | 2008-10-22 | |||
| EP1905637A1 | 2008-04-02 | |||
| US20070187158A1 | 2007-08-16 |
Attorney, Agent or Firm:
MCCLOSKEY, G., Matthew et al. (28 State StreetBoston, MA, US)
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