Title :
A Novel Approach for Circuit-Field-Coupled Time Stepping Electromagnetic Analysis of Saturated Interior PM Motors
Author :
Kano, Y. ; Watanabe, K. ; Kosaka, T. ; Matsui, N.
Author_Institution :
Nagoya Inst. of Technol., Nagoya
Abstract :
This paper presents a novel approach for circuit-field- coupled time-stepping electromagnetic analysis of a saturated interior permanent-magnet(IPM) synchronous motor. To predict the drive performance quickly, the proposed approach consists of a dynamic simulator based on a novel nonlinear model of the d-q- flux linkages of the IPM motor. The model can take into account not only the magnetic saturation but also the harmonics of inductance distributions and EMF waveforms. The validity of the model is verified from suitable simulation results of the instantaneous current and torque waveforms of the IPM motor. The proposed analysis has realized a dramatic reduction in the computation time compared to circuit-field-coupled time- stepping FEA, keeping analytical accuracy. A 10 kW-15,000 rpm prototype driven by PWM inverter was used for laboratory testing to verify the analysis. The experimental results showed quite reasonable agreement with the predicted instantaneous current.
Keywords :
PWM invertors; permanent magnet motors; synchronous motors; EMF waveforms; IPM motors; PWM inverter; circuit-field-coupled time-stepping electromagnetic analysis; interior permanent-magnet synchronous motor; magnetic saturation; torque waveforms; Circuit simulation; Coupling circuits; Electromagnetic analysis; Electromagnetic coupling; Inductance; Magnetic flux; Permanent magnet motors; Predictive models; Saturation magnetization; Synchronous motors;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.4