Proterra To Showcase Hybrid-electric Transit Bus Using UQM Technologies’ (UQM) Engine In San Diego

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07:56:20 am on October 3, 2008

UQM Technologies announced that Proterra LLC will showcase a prototype of Proterra’s its HFC 35 composite body, zero-emission, battery-dominant hybrid-electric transit bus at the American Public Transportation Exposition in San Diego. The bus is powered using UQM’s PowerPhase® 150 propulsion system. The HFC 35 can carry 37 passengers, and it will make it’s real-world debut as part of a nationwide trial sponsored by the FTA starting in 2009.

Here are some more details about the bus and its engine:

The HFC35 transit bus features a UQM® PowerPhase® 150 electric propulsion system that produces peak torque of 650 N-m and peak power of 150 kW (201 horsepower). The system has a continuous torque rating of 400 N-m and a continuous power rating of 100kW (134 horsepower). The system also features optimized four-quadrant performance, dynamic torque, speed and voltage control, regenerative braking and system energy efficiency of over 90 percent across substantially all of its performance regime.-Motor Age

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