| Issue |
E3S Web Conf.
Volume 178, 2020
High Speed Turbomachines and Electrical Drives Conference 2020 (HSTED-2020)
|
|
|---|---|---|
| Article Number | 01061 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/e3sconf/202017801061 | |
| Published online | 09 July 2020 | |
Improving the efficiency of electroosmotic drying of electric motors insulation
1
Vologda State University, Lenina Street 15, Vologda, 160000 Russia
2
Kazan State Power Engineering University, Kazan, Russia
The actual problem of electric motors (EM) operation associated with wetting of windings insulation is considered. A new method of EM drying based on electrokinetic phenomenon of electroosmosis was developed at the Department of Electrical Equipment of Vologda State University. It was shown that water molecules can take part in formation of non-mobile hydrated positively charged hydrogen ions. In this case, hydrogen ions become bound, lose their mobility and ability to take part in the process of electroosmotic drying (EOD). EOD efficiency is drastically reduced. It was proved that it is possible to prevent ion hydration, increase their mobility, penetration ability and, thereby, increase the EOD efficiency by applying a pulsed voltage component to the EOD process with a duty factor of 4. As a result, a new EOD method was developed using a pulsed voltage component that increases the speed of EM insulation drying by three times.
© The Authors, published by EDP Sciences, 2020
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