The reliability of the wound field synchronous machines is improved by the brushless exciter (BLE) rather than using static exciter which requires brushes and slip rings. Conventional BLEs usesa rotating diode bridge rectifier for converting AC to DC voltage. However, these exciters cannot produce a negative voltage across the field winding because of which dynamic response of the field current is very low. The proposed topology in this paper introduces a new line commutated-thyristor bridge emulated power electronic converter that can produce both positive and negative voltage across the field winding of the generator. Also, this topology eliminates the need for a DC-link capacitor which improves the reliability of the BLE system. The proposed topology is simulated in MATLAB-SIMULINK platform and the simulation results for both rectification and inversion mode are presented. Also, a simpler control methodology has been proposed for the BLE with the proposed converter.
|Original language||English (US)|
|Title of host publication||2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - Nov 9 2020|
|Event||21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Denmark|
Duration: Nov 9 2020 → Nov 12 2020
|Name||2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020|
|Conference||21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020|
|Period||11/9/20 → 11/12/20|
Bibliographical notePublisher Copyright:
© 2020 IEEE.
- Brushless exciters
- electrically excited
- rotating power electronic converter
- synchronous machines