HEV Electric Motor

Hitachi Automotive Systems


Stator and rotor

Flat cylindrical type intended to be built into the transmission or located between the engine and transmission. Used primarily in HEVs.
Wave winding with square-profile wire
HEV motors require high-torque and low-speed motor output characteristics. Accordingly, to deliver high torque, the two winding circuits are connected in series to increase the number of winding loops. Although this results in a shorter permissible operating time because of the large temperature rise while current is flowing, it is adequate for the short-duration torque-assist that occurs in HEVs when accelerating from a halt, for example.

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