Application Research of JMAG in Large Turbine Generators

Baichuan Xu
Technology Development Department,
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO., LTD
SHANGHAI GENERATOR PLANT

概要

Large generators are the core equipment of power systems, and inaccurate calculations at the end of large generators affect the safe and reliable operation of the motor. Currently, electromagnetic calculations for generators involve the linear section of the winding in the slot, which has a simple geometric structure, regular winding arrangement, and strong magnetic field symmetry. However, calculations for the end of large generators are difficult. This study reports on the application of JMAG in large steam turbine generators, taking the calculation of losses in the stator end coils and end structural components of a large capacity air cooled generator as an example. Based on the JMAG simulation software, a three-dimensional finite element simulation model of the generator’s stator and rotor end coils and other structural components was constructed, and finite element calculations were carried out. The experimental results were in good agreement with the calculations.