Electric Motor Cooling System

Cooling is necessary to continuously transfer the heat to a cooling medium such as the air.

Electric motor cooling system.

For ac induction motors cooling air is usually circulated internally and externally by one or more fans mounted on the rotor shaft. Ic 411 in this cooling method the motor is cooled by a fan mounted on the motor shaft. In this cooling method the electric motor is essentially cooled by free convection current from the air. As such ev propulsion system requires cooling systems not only to the electric motor but also to the battery banks in order to ensure efficient operation and maximizing the electric components and vehicle lifetime.

The indirect liquid cooling systems for electric vehicles and the conventional internal combustion engine ice cooling system are very similar. Medium high voltage motors ic81w air water cooling with integral fan on motor s shaft inside stator and water cooled heat exchanger. Low voltage motors totally enclosed ip44 and higher ic410 tenv totally enclosed naturally ventilated no fan ic411 tefc totally enclosed fan cooled own fan ventilated ic416 tefv totally enclosed force ventilated ventilated with independent fan ic418 teao totally enclosed air over no fan motor in air stream water in out ic71w jacket water cooled. This is the most common method for cooling electric motors you will find in the industry.

The electric motor windings heats up when operated under extreme load and hence reducing the efficiency of the vehicle. Water outlet water inlet 6 electric motor cooling systems. Journal of the korean society of tribologists and lubrication engineers 29 5 pp 318 323. To allow for operation of the machine in either direction of rotation fans are usually of the bi directional type and made of a strong plastic material aluminum.

Wang a heming li cheng tsung liu 2008. The different methods of cooling rotating machines are classified in the standards iec 34 6 and as 1359 21. Electric motor cooling systems.