Title :
A General Model of the Laminated Steel Losses in Electric Motors with PWM Voltage Supply
Author :
Ionel, Dan ; Popescu, Mircea ; Cossar, C. ; McGilp, M.I. ; Boglietti, Aldo ; Cavagnino, Andrea
Author_Institution :
AO Smith CTC, Milwaukee, WI
Abstract :
A procedure is described for identifying a general mathematical model of core losses in ferromagnetic steel when the voltage supply is non-sinusoidal, i.e. PWM inverter-fed type. This model has a hysteresis loss multiplicative coefficient variable with frequency and induction and a combined coefficient for eddy-current and excess losses that is also variable with frequency and induction. The effect of the PWM supply voltage over the core losses is modeled using factors that depend on the average rectified and rms voltage values. Validation was performed on a number of different samples of non-grain oriented fully and semi-processed steel alloys.
Keywords :
PWM invertors; alloy steel; eddy current losses; electric motors; machine theory; PWM the inverter-fed type; PWM voltage supply; average rectified; eddy current losses; electric motors; excess losses; ferromagnetic steel; general mathematical model; hysteresis loss multiplicative coefficient variable; laminated steel losses; rms voltage values; semi-processed steel alloys; Core loss; Electric motors; Frequency; Hysteresis; Iron alloys; Mathematical model; Pulse width modulation; Pulse width modulation inverters; Steel; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE
Conference_Location :
Edmonton, Alta.
Print_ISBN :
978-1-4244-2278-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/08IAS.2008.46
