Self-Excitation System for Synchronous Generator
| Autor: | Marcis Prieditis, Genadijs Zaleskis, Ivars Rankis |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Engineering
AC machines business.industry Buck converter Induction generator Electrical engineering Permanent magnet synchronous generator Filter capacitor law.invention Generator (circuit theory) Capacitor Shunt generator Hardware_GENERAL law wind energy generation generators converters power transistors Wind energy generation business Excitation |
| Zdroj: | The Scientific Journal of Riga Technical University-Electrical, Control and Communication Engineering; Vol 4 (2013): The Scientific Journal of Riga Technical University-Electrical, Control and Communication Engineering; 32-37 |
| ISSN: | 2255-9159 2255-9140 |
| DOI: | 10.2478/ecce-2013-0019 |
| Popis: | Self-excitation for synchronous generator is described in the paper. The system is based on a buck converter input filter capacitor discharge through excitation winding of the generator. The buck converter is connected to the stator outputs through an uncontrollable diode rectifier, but excitation winding is used as a load. Input filter capacitor of the converter provides initial current pulse which magnetizes excitation system and produces the generator voltage increase, for this reason the capacitor is charged before self-excitation process starts. Results of the computer simulation and physical experiment are obtained and presented. These results show that the proposed self-excitation converter in conjunction with an input capacitor pre-charged from a low-power electronic generator actually magnetizes the generator excitation system therefore generator voltage and accordingly excitation current increases. Stabilization of generator output voltage occurs with a voltage surge, though its peak value slightly exceeds the reference one. The future investigation of the proposed self-excitation system may include definition of mathematical equations which describe transients in the generator’s self-excitation mode and development of control methods for purpose of self-excitation process control without voltage peaks. The computer model also should be improved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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