Title :
Loss Analysis of Interior Permanent Magnet Motors Considering Carrier Harmonics of PWM Inverters Using 3-D Nonlinear Time-Stepping Finite Element Method
Author :
Yamazaki, Katsumi ; Abe, Atsushi
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Chiba Inst. of Technol., Narashino
Abstract :
A calculation procedure to investigate harmonic losses of interior permanent magnet motors driven by PWM inverters is proposed. The 3-D nonlinear time-stepping finite element method is carried out with the voltage waveform, which is generated by the PWM inverter due to the controller command of the armature current. The calculated electromagnetic potentials at each finite element are decomposed into time-harmonic components to understand the harmonic characteristics separately. The calculated results are compared with the measurement to verify the validity of the method. The proper magnet division to reduce the eddy current losses is also clarified
Keywords :
PWM invertors; eddy current losses; finite element analysis; harmonic analysis; motor drives; nonlinear equations; permanent magnet motors; 3D nonlinear time-stepping finite element method; PWM inverters; armature current controller; carrier harmonics; eddy current loss reduction; electromagnetic potentials; interior permanent magnet motors; loss analysis; voltage waveform; Eddy currents; Finite element methods; Harmonic analysis; Magnetic analysis; Magnetic separation; Permanent magnet motors; Pulse width modulation; Pulse width modulation inverters; Saturation magnetization; Voltage;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1633115
