Hybrid AC/DC Network With Parallel LCC-VSC Interlinking Converters
| Autor: | Farzam Nejabatkhah, Yun Wei Li, Rouzbeh Reza Ahrabi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Computer science
020209 energy Energy Engineering and Power Technology 02 engineering and technology Integrated circuit Converters AC power law.invention law Control system 0202 electrical engineering electronic engineering information engineering Electronic engineering Graph (abstract data type) Voltage droop Commutation Electrical and Electronic Engineering Voltage |
| Zdroj: | IEEE Transactions on Power Systems. 36:722-731 |
| ISSN: | 1558-0679 0885-8950 |
| DOI: | 10.1109/tpwrs.2020.3020235 |
| Popis: | This paper presents a unified control strategy for parallel LCC-VSCs interlinking converters (IC)s in hybrid AC/DC grids. The parallel LCC-VSCs configuration takes advantage of the low cost of the LCC system as well as the bidirectional power flow capability of VSCs and offers an excellent option for lowering system costs with high performance. Moreover, drawbacks of the LCCs such as low power quality, reactive power consumption, and commutation failure can be addressed by using the parallel LCC-VSCs configuration with proper control and coordination. The proposed unified control system is developed by modifying the LCC's V-I graph to create a droop equivalent along with droop-based control of the VSCs. As a result, it provides voltage/frequency support for the AC and voltage support for the DC sub-grids in various operating conditions. In this paper, the performance of the proposed control strategy under different operation conditions is investigated. Case study results, with a realtime simulator, are provided to verify the effectiveness of the proposed control strategy. |
| Databáze: | OpenAIRE |
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