Investigation of Temperature Rise Calculation and Cooling Improvement Measures for Permanent Magnet Synchronous Motors at the Hanzhuang Pump Station of the South-to-North Water Diversion Project
The Hanzhuang Pump Station of the East Line of the South-to-North Water Diversion Project uses permanent magnet synchronous motors,which have higher operational efficiency and power factor under both rated and light loads.However,during the water diversion process,it was observed that after running for a period,the motor current increased,the temperature of various parts of the motor rose,and the active power increased,even though the ambient temperature,flow rate,water level,and water temperature remained unchanged.This paper calculates the temperature rise of the original motor model,obtaining the temperature distribution within various regions of the motor.It explores measures to reduce the temperature rise of the motor without altering the original motor and cooling structure,thereby reducing the losses generated during motor operation.This provides theoretical support for the design of similar large direct-drive permanent magnet synchronous motors in the future.
万方数据
维普
