Electric traction hits the road

UQM Technologies has launched its Integrated Electric Traction System, a new propulsion system for battery, hybrid, and fuel cell electric vehicles.

UQM Technologies has launched its Integrated Electric Traction System (INTETS), a new propulsion system for battery, hybrid, and fuel cell electric vehicles.

The INTETS system is the electrical equivalent of a conventional powertrain consisting of an internal combustion engine, transmission and differential.

Measuring 15 inches (380 mm) in length with an 11-inch (280 mm) diameter (excluding an optional electronic inverter/controller), INTETS incorporates internal epicyclic single-stage gearing, off-the-shelf internal differential components, and parking pawl.

An optional intelligent inverter/controller can be programmed to meet a variety of vehicle configurations and incorporates the Controller Area Network (CAN) communications protocol.

Test results on the 70kW version of INTETS achieved continuous power of 30 kW, peak power of 75 kW and peak torque of 1,700 N-m, surpassing the initial goals of 70 kW of peak power and 1,650 N-m of peak torque. Additionally, the complete system, which includes a brushless permanent magnet motor, inverter/controller and gearing, registered peak efficiency exceeding 91%.

In addition to this mid-size version, the Company has plans for a smaller 25 kW unit to power electric vehicles (NEVS) and material handling equipment. A larger, more powerful 125 kW version for light trucks and SUVs is also under consideration.

The three versions of INTETS will cover the power range that most manufacturers of battery, hybrid and fuel cell electric vehicles are planning to engineer and introduce.

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