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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.
Beginning with this initial installment , and with the gracious permission of ABB/Baldor Electric, we are
pleased to announce the beginning of a new series -- Baldor Basics: Motors. This is a collection of basicsdriven,
motor-intensive articles authored by former Baldor engineer Edward Cowern, PE, a respected
name by many in the electric motor industry. During his tenure at Baldor, Cowern - now enjoying his
retirement - was tasked with producing a number of motor- and basics-related tutorials, primarily in
response to a steady flow of customer questions regarding motors. Today's customers continue to ask
questions and seek answers to address their various motor-related issues. As with Cowern's original
introduction to the series, we hope you find these articles useful and would appreciate any comments or
thoughts you might have for future improvements, corrections or topics.