A PROCEDURE FOR SPECIFIC MAGNETIC LOSSES CALCULATION IN FeSi ELECTRICAL SHEETS
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2010, Vol 34, Issue 34
Abstract
The losses in the magnetic circuit of electrical machines produce machine heating and reduce efficiency with implications in lifetime and energy save. The factors that affect the losses in magnetic circuits of electrical machines are: material performances, geometry of magnetic circuit, load characteristics and working frequency. Taking into account all these factors, the paper analyzes the magnetic losses in the FeSi electrical sheets used in magnetic circuit of electrical machines construction and proposes a new and fast mathematical model for specific magnetic losses calculation in a specific range of magnetization. A procedure of losses division for hysteresis losses, eddy currents losses and additional magnetic losses is proposed, resorting to a minimum of experimental data. The proposed model has as advantage rapidity of magnetic losses determination due to the use of variable coefficients involved in hysteresis losses determination, reported to magnetization frequency and magnetic induction. Validation model was made over a frequency range of 10 Hz to 200 Hz and magnetic induction from 0.1 T to 1.5 T, with errors compared with those of classical model.
Authors and Affiliations
Marius-Daniel CALIN, Carmen LUNGOCI, Elena HELEREA
Keywords
Related Articles
- EP ID EP113437
- DOI -
- Views 146
- Downloads 0
Single/Three-Phase Transformer with Variable Frequency for Electric Locomotives
Electric rail transport is positioned as environment- friendly technology that has good future prospects for development. The supply of electric rail transport from DC or AC power lines requires the use of specialized tr...
Practical Considerations Concerning Conducted Electromagnetic Interferences for a PC
The paper refers to theoretical and practical considerations concerning conducted electromagnetic interferences (IEM). The standards used for measuring of conducted emissions (CE) are presented and discussed. FCC and...
Technical Aspects Regarding Electromagnetic Compatibility Compliance of the Electric and Electronic Integrated Systems
The modern world’s needs of electric and electronic devices and systems lead to a continuously electromagnetic interferences growing in ways that were hard to predict few decades ago, a serious reason to consider the ele...
ANALYSIS OF COUPLED OSCILLATORS APPLIED TO ANTENNA ARRAYS
In recent years microwave oscillators are widely studied. They are used to guide the radiation pattern of a phased array antenna in a certain direction instead of the traditional beam steering methods. These new control...
Contactless Power Transfer – Theoretical Principles and Fields of Applications
Contactless energy transfer 1 has indubitable advantages in modern technique given by the lack of electro-mechanical contacts predisposed to pitting and failure: use in aggressive or explosive (no sparks) environments, a...