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Maxwell 2D/3D for an inline permanent magnet ISA

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Light Engineering (LE) is a leading developer and manufacturer of the highest efficiency and highest power-density-to-cost ratio motors and generators in the industry. LE products are emerging in such applications as electric vehicle, military, marine, and power-generation markets.

THE NEED
To resolve severe torque cogging, predict proximity effect losses, and cure rotor-related heating failures

THE SOLUTION
Maxwell® 2D, Maxwell 3D, Optimetrics™

Andy Hirzel, Director of Magnetic Design, Light Engineering, used Maxwell 3D to design an inline permanent magnet ISA for use with a diesel engine powertrain system. He also used Ansoft's Optimetrics™ and transient solvers to model torque cogging, eddy-current loss, proximity-effect loss, bearing preload, output torque, phase inductance, and risk of demagnetization. Hirzel achieved a rated performance goal of 60 kW at >94% efficiency and peak torque density of >40N-m/liter.

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Presentations
Source	Date	Title	Author
2004 Automotive Electromechanical Simulation Workshop	10/05/04	A 60 KW ISA Problem	Andrew Hirzel - Light Engineering