| Title |
Insulation Breakdown Life due to Temperature Stress of Organic /Inorganic Nano Hybrid Coil for Inverter Surge |
| DOI |
http://doi.org/10.5370/KIEE.2019.68.2.318 |
| Keywords |
Inverter surge ; Insulation breakdown life ; Temperature stress ; Nano hybrid rectangular coils ; Flexible agent |
| Abstract |
The one nano hybrid rectangular coil was fabricated by dispersing SiO2 in PAI resin using a sol / gel method, and the another nano hybrid rectangular coil was fabricated by adding a flexible agent. To evaluate the dielectric breakdown lifetime, the dielectric breakdown lifetime was measured according to the change of temperature environment (30, 70, 100, 130, 150, 200 ℃) under an inverter surge (1.5kV/20kHz). Compared to the PAI original coil, the dielectric breakdown lifetime of the nano hybrid rectangular coil at 30 ℃ was improved by 23.23 times. The dielectric breakdown lifetime of the nano hybrid rectangular coil without the flexible agent was longer than that with the flexible agent at 100℃ or less. However, at 100 ℃ or higher, the life time of the dielectric breakdown of the rectangular coil added with the flexible agent was further improved. |