Electromagnetic Performance Improvement of Asymmetric Hybrid PM Motor Considering Various Operating Conditions

A serial-parallel asymmetric hybrid permanent magnet (AHPM) motor is proposed to enhance the electromagnetic performance of electric vehicles (EVs). To satisfy the diverse requirements of electromagnetic performance under various operating conditions, variable operating condition weighting optimization based on multifield analysis is implemented. Subsequently, using a field-circuit coupling simulation, the torque performance, loss, efficiency distribution, and anti-demagnetization capability under the corresponding typical operating conditions are analyzed and compared. Finally, the proposed prototype is manufactured and tested. The theoretical analysis and experimental results verified the rationality of the AHPM motor and the effectiveness of the proposed optimization method.