An Improved Control Method for Multiple Bidirectional Power Converters in Hybrid AC/DC Microgrid
| Autor: | Yuan Huang, Zhikang Shuai, Guobin Jin, An Luo, Huagen Xiao |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
General Computer Science business.industry 020209 energy 020208 electrical & electronic engineering 02 engineering and technology Converters Power (physics) Electric power system Control theory AC adapter 0202 electrical engineering electronic engineering information engineering Electronic engineering Voltage droop Microgrid business Power control |
| Zdroj: | IEEE Transactions on Smart Grid. 7:340-347 |
| ISSN: | 1949-3061 1949-3053 |
| DOI: | 10.1109/tsg.2015.2469758 |
| Popis: | In this paper, an improved control method for multiple bidirectional power converters is proposed to reduce the circulating current and power-sharing deviation among converters when the hybrid ac/dc microgrid operated in island mode, which can enhance the security of parallel converters. First, a unified detection method for circulating current and power-sharing deviation is described. Then, the improved control method for bidirectional converters in hybrid microgrid operated in island mode is presented to reduce circulating current and power-sharing deviation, which includes the droop controller used to achieve automatic power sharing and the improved virtual impedance controller used to further reduce circulating current and power-sharing deviation. At last, simulation and experiment results verified that the proposed control method can simultaneously achieve circulating current reduction and automatic power sharing, and does not decrease the output power capability of converter. The proposed control method is suitable for the configuration that has a specific bus between bidirectional power converters, and the ac bus connected to ac loads and the host grid. |
| Databáze: | OpenAIRE |
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