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

fYear

2008

fDate

5-9 Oct. 2008

Firstpage

1

Lastpage

7

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE

Conference_Location

Edmonton, Alta.

ISSN

0197-2618

Print_ISBN

978-1-4244-2278-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/08IAS.2008.46

Filename

4658834