Ansys Maxwell: Core and Magnet Losses in Electric Motors
Eddy current losses in magnets affect the efficiency and thermal performance of electric motors. They occur when alternating magnetic fields induce loops of electrical current within conductive materials, such as the magnets used in electric motors. These currents generate heat, leading to reduced efficiency and magnet hotspots.
Core losses, are also due to the alternating magnetic fields within the motor's core material. These losses are typically divided into hysteresis losses, caused by the lagging response of the magnetic material to the changing field, and eddy current losses within the core, as well as excess losses. Understanding how to accurately model and predict these losses is essential for optimizing motor performance and efficiency.