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Until that time EMD had shared a similar history to Parvalux, initially winning recognition in the 1960s as volume AC motor supplier to household names such as Qualcast and Hotpoint, but then moved exclusively into DC products by the 1980s where they would compete directly with Parvalux for some 30 years.
A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years ...
American Axle has developed 100 kW and 150 kW wheel-end motors through a project funded by the United States Department of Energy for the commercialization of clean-energy low-cost wheel-end motors. Costs were lowered by integrating the motor, inverter, and gear reduction into a single unit, and by avoiding heavy rare earth elements. [24]
A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor.
[42] [43] In addition, newer installations include a DC-DC converter, a solid-state device that converts the high-voltage traction motor energy to 12/24V accessory power. [42] As of 2008, there are more than 2,700 GM-Allison hybrid buses operating in 81 cities in the U.S., Canada and Europe. [41] This includes: Translink (Vancouver) Dresden ...
The one-hour rating is typically about 10% higher than the continuous rating and is limited by the temperature rise in the motor. As traction motors use a reduction gear setup to transfer torque from the motor armature to the driven axle, the actual load placed on the motor varies with the gear ratio.
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