Seigo Taku, Design Section 1, Large Rotating Machinery Department 2, Rotating Machinery Systems Division, TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
In recent years, mainly in small and medium power motors, the rotational machines becomes required to be higher power, smaller size, and higher magnetic flux density. However, in large class alternative current rotational machines, when the machines is operated on high magnetic flux density, eddy current loss and temperature rise of the stator core supports are remarkably increased by the leakage magnetic flux. Therefore, to evaluate the loss and the temperature rise quantitatively is important in designing higher magnetic flux density machines.
This presentation reports eddy current loss analysis evaluation and temperature rise verification test of stator core clamping stud bolts in 3500HP induction motor.