Simulation of Proximity Effect in Transformer Due to Harmonic Loads
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 2, Issue 5
Abstract
The AC loss in a transformer winding is mainly due to the sum of the I2R losses produced by the fundamental and harmonic components of the current, recognizing that for each component, R depends on the frequency of that component. For lower-order harmonics, the frequency dependence of the winding resistance is primarily due to the proximity effect, a phenomenon that occurs in coils because the magnetic field surrounding each conductor in a coil depends on the fields produced by other conductors. The proximity effect produces greater losses than those predicted by the skin effect, which is dominant at higher frequencies. The proximity effect therefore accounts for the largest contribution to winding eddy currents under harmonic load current. The proximity effect in transformers which can be the most severe under harmonic conditions are estimated to be proportional to the square of frequency. Finally, the model simulated in MATLAB/Simulink and the losses of 200KVA transformer is then evaluated and results are compared.
Authors and Affiliations
Lata Kotwani
Keywords
Related Articles
- EP ID EP117396
- DOI -
- Views 55
- Downloads 0
ANDROID CHATTING APPLICATION BASED ON WI-FI TECHNOLOGY
As we know that Android operating system is one of the popular operating system for mobile applications.It supports mobile applications such as Chatting based applications,File sharing applications etc. In market...
A Review: Text Detection in Natural Scenes with Stroke Width Transform
Detecting text segments in an image of a natural scene, by using the Stroke Width Transform The approach of SWT is grouping pixels together in an intelligent way, instead of looking for separating features of pixe...
EFFICIENT CONTENT BASED VIDEO RETRIEVAL USING ASR AND OCR TECHNIQUES
E-lecturing has become more and more popular, in the last decade. On the World Wide Web (WWW) is growing rapidly, the amount of lecture video data. For video retrieval in WWW or within large lecture video archives is u...
Sleep EEG Event Detection Using Fuzzy_Neural Approach
The wide variety of waveforms in EEG signals and the high non-stationary nature of many of them is one of the main difficulties to develop automatic detection systems for them. In sleep stage classification a rele...
SMART BUS MONITORING AND TRACKING SYSTEM
Primary information for the most citytransport travelers the bus arrival time. Excessively there often discourages the travelers due to long waiting time at busstops and for taking busesmakes them reluctant. In th...