New TM4 SUMO medium-duty electric motors boost torque and speed 45% with SMCs in place of permanent magnets
Green Car Congress
JUNE 8, 2016
TM4 will introduce three new SUMO medium-duty (MD) powertrain options at the 29 th Electric Vehicle Symposium & Exhibition (EVS29), offering an increase of up to 45% in torque and speed, thanks to a new technological advancement. Until now, the main rotor technology found in TM4’s electric motors was based on surface-mounted permanent magnets. The desire to limit the use of rare-earth magnets has resulted in a technology choice that leverages the reluctance torque of TM4’s external rotor design
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