Archive > 2017 > February 2017 > Lightweight, Highly Efficient Drive System

Lightweight, Highly Efficient Drive System - February 2017

James Winchester, Andrea Favale, Scott A. Martin

The article "Lightweight, Highly Efficient Drive System" appeared in the February 2017 issue of Power Transmission Engineering.

This paper presents a joint project conducted by Ashwoods Electric Motors and Oerlikon Fairfield that uses planetary drives with an integrated electric motor. Current solutions used in production of off-highway vehicles rely upon large, heavy and inefficient brushed DC or induction motors, coupled to a planetary gearbox. This presents a number of challenges to the vehicle designers such as: limited vehicle range, limited space around the motor/drivetrain, and motor durability. The proposed integrated system utilizes an Oerlikon Fairfield Torque Hub, widely used in off-highway vehicles, and the Ashwoods first-to-market, interior permanent magnet motor. How these products are integrated, i.e. incorporating a brake solution, represents a market-changing product. Using interior permanent magnet (IPM) technology in the motor design means the motor can be up to 70% lighter, 70% smaller and 20% more efficient than traditional motors used in off-highway traction applications.

gear drives, brakes, off-highway, traction drives, Oerlikon Fairfield, planetary gear drives, gearmotors, Ashwoods Electric Motors

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