Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator
Abstract The Dual‐Excited Synchronous Generator (DESG) has two sets of field windings. The magnitudes and directions of the two field currents can be regulated, so that the excitation magneto‐motive force can be in any direction. The electromagnetic characteristics of the DESG may be different with...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-10-01
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| Series: | IET Electric Power Applications |
| Online Access: | https://doi.org/10.1049/elp2.12099 |
| _version_ | 1817999112995340288 |
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| author | Guorui Xu Zhenzhen Wang Bingchen Liu Yang Zhan Weili Li Haisen Zhao Hao Huang Honghao Yu |
| author_facet | Guorui Xu Zhenzhen Wang Bingchen Liu Yang Zhan Weili Li Haisen Zhao Hao Huang Honghao Yu |
| author_sort | Guorui Xu |
| collection | DOAJ |
| description | Abstract The Dual‐Excited Synchronous Generator (DESG) has two sets of field windings. The magnitudes and directions of the two field currents can be regulated, so that the excitation magneto‐motive force can be in any direction. The electromagnetic characteristics of the DESG may be different with those of the Traditional Synchronous Generator (TSG) for the different rotor structures of the two generators. To obtain better electromagnetic characteristics, a time‐stepping finite element model (T‐S FEM) of the DESG is established. The air‐gap radial flux density, saturation, active and reactive power of the DESG in single‐ and dual‐axis excitation modes are calculated and compared with those of the TSG. The electromagnetic characteristics affected by the different ratio of q‐axis field current to d‐axis field current are studied. On this basis, an excitation control strategy that can enhance the steady‐state stability is proposed, and the steady‐state stability limits with and without excitation control are calculated by the T‐S FEM. A 10‐kW DESG is developed to verify the correctness of the simulation results. The results show that the DESG with dual‐axis excitation has better electromagnetic characteristics and stronger reactive power ability, and the steady‐state stability limit of the DESG is increased obviously through the excitation control. |
| first_indexed | 2024-04-14T03:03:44Z |
| format | Article |
| id | doaj.art-6fa6a8fb5ffc4440ada60b70b0039b9a |
| institution | Directory Open Access Journal |
| issn | 1751-8660 1751-8679 |
| language | English |
| last_indexed | 2024-04-14T03:03:44Z |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electric Power Applications |
| spelling | doaj.art-6fa6a8fb5ffc4440ada60b70b0039b9a2022-12-22T02:15:49ZengWileyIET Electric Power Applications1751-86601751-86792021-10-0115101300131310.1049/elp2.12099Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generatorGuorui Xu0Zhenzhen Wang1Bingchen Liu2Yang Zhan3Weili Li4Haisen Zhao5Hao Huang6Honghao Yu7School of Electrical and Electronic Engineering North China Electric Power University Beijing ChinaSchool of Electrical and Electronic Engineering North China Electric Power University Beijing ChinaSchool of Electrical and Electronic Engineering North China Electric Power University Beijing ChinaSchool of Electrical and Electronic Engineering North China Electric Power University Beijing ChinaSchool of Electrical Engineering Beijing Jiaotong University Beijing ChinaSchool of Electrical and Electronic Engineering North China Electric Power University Beijing ChinaHarbin Electric Machinery Company Limited Harbin ChinaHarbin Electric Machinery Company Limited Harbin ChinaAbstract The Dual‐Excited Synchronous Generator (DESG) has two sets of field windings. The magnitudes and directions of the two field currents can be regulated, so that the excitation magneto‐motive force can be in any direction. The electromagnetic characteristics of the DESG may be different with those of the Traditional Synchronous Generator (TSG) for the different rotor structures of the two generators. To obtain better electromagnetic characteristics, a time‐stepping finite element model (T‐S FEM) of the DESG is established. The air‐gap radial flux density, saturation, active and reactive power of the DESG in single‐ and dual‐axis excitation modes are calculated and compared with those of the TSG. The electromagnetic characteristics affected by the different ratio of q‐axis field current to d‐axis field current are studied. On this basis, an excitation control strategy that can enhance the steady‐state stability is proposed, and the steady‐state stability limits with and without excitation control are calculated by the T‐S FEM. A 10‐kW DESG is developed to verify the correctness of the simulation results. The results show that the DESG with dual‐axis excitation has better electromagnetic characteristics and stronger reactive power ability, and the steady‐state stability limit of the DESG is increased obviously through the excitation control.https://doi.org/10.1049/elp2.12099 |
| spellingShingle | Guorui Xu Zhenzhen Wang Bingchen Liu Yang Zhan Weili Li Haisen Zhao Hao Huang Honghao Yu Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator IET Electric Power Applications |
| title | Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator |
| title_full | Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator |
| title_fullStr | Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator |
| title_full_unstemmed | Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator |
| title_short | Finite‐element calculation of electromagnetic characteristics and steady‐state stability of dual‐excited synchronous generator |
| title_sort | finite element calculation of electromagnetic characteristics and steady state stability of dual excited synchronous generator |
| url | https://doi.org/10.1049/elp2.12099 |
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