| |
New Earth-Fault Protection of AC-Drives with DC-Choke & DC-link Current Sensing
| [View]
[Download]
|
| Author(s) |
Henrik Rosendal ANDERSEN |
| Abstract |
DC-link current sensing enables adjustable speed drives to be designed compactly. Except for the low-impedance earth-fault protection the whole drive is protected by a single current-sensing element as well as drives with three current sensors on the output phases. A new indirect detection method for improving the low-impedance earth-fault protection of adjustable speed drives with a low-side DC-link shunt and a high-side DC-choke is proposed. The method is analyzed theoretically and practically. Test results at 2.2kW and 22kW power levels are presented. |
| Download |
| Filename: | 0505-epe2015-full-13222142.pdf |
| Filesize: | 1.075 MB |
|
| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
| |
 |