Lightweight electronically commutated dc motor for electric passenger vehicles
A program was conducted to develop a state-of-the-art, electronically commutated motor specifically designed for propulsion of electric vehicles with increased range, reduced energy consumption, and reduced life-cycle costs compared with conventional systems. The program was accomplished in two phases involving development and test of (1) a functional model breadboard converter and a rare-earth-cobalt, permanent-magnet (PM) motor, and (2) an engineering model converter and PM motor suitable for vehicle installations. The converter and motor achieved an 88 percent peak efficiency, a maximum output of 26 kW at 26,000 rpm, and a continuous rating of 15 kW. The system also regenerated power to the source during braking, with a demonstrated peak power available at the converter terminals of approximately 26 kW at 88 percent efficiency. Major conclusions included: (1) the SAE J227a(D) driving cycle efficiency for the converter/motor is 86 to 88 percent when energy available for recovery at the converter terminals is included; (2) the converter initial cost is approximately five time that of the permanent magnet motor, but can be reduced by means of LSI logic and integrated liquid-cooled semiconductor packages; and (3) an electronically commutated motor with a liquid-cooded converter will operate reliably without service or maintenance for the life of a passenger vehicle.
- Research Organization:
- AiResearch Mfg. Co., Torrance, CA (USA)
- DOE Contract Number:
- AI01-77CS51044
- OSTI ID:
- 6350495
- Report Number(s):
- DOE/NASA-0064-1; NASA-CR-165601; ON: DE83010795
- Country of Publication:
- United States
- Language:
- English
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Electronically commutated dc motors for electric vehicles
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Related Subjects
330300* -- Advanced Propulsion Systems-- Electric-Powered Systems
CONTROL SYSTEMS
DATA
DESIGN
EFFICIENCY
ELECTRIC MOTORS
ELECTRIC-POWERED VEHICLES
ELECTRICAL EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
INVERTERS
MOTORS
NUMERICAL DATA
PERFORMANCE
POWER
RECTIFIERS
REGENERATIVE BRAKING
VEHICLES