Title :
Influence of PWM characteristics on the core losses due to harmonic voltages in PWM fed induction motors
Author :
Khomfoi, S. ; Kinnares, V. ; Viriya, P.
Author_Institution :
Dept. of Electr. Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
The paper focuses on mechanisms of harmonic core losses due to PWM characteristics. The influence of PWM characteristics such as switching frequency, modulation depth and PWM strategy on core losses has been examined. The investigation into harmonic core losses based on no-load input power measurement with minimized rotor copper loss and rotational loss has been made. The experimental results show that the increment of core losses due to PWM harmonic voltages is significant compared to a sinusoidal supply and the modulation depth has significant effect on machine core losses
Keywords :
PWM invertors; induction motors; losses; magnetic cores; power measurement; rotors; PWM characteristics; PWM fed induction motors; PWM strategy; core losses; harmonic core losses; harmonic voltages; machine core losses; minimized rotor copper loss; modulation depth; no-load input power measurement; rotational loss; sinusoidal supply; switching frequency; Copper; Core loss; Frequency modulation; Induction motors; Pulse width modulation; Pulse width modulation inverters; Rotors; Switching frequency; Testing; Voltage;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.849991
