Multi-Frequency Control in a Stand-Alone Multi-Microgrid System Using a Back-To-Back Converter

Improving the system reliability is another advantage of the MMG system because the amount of load-shedding could be reduced, as mentioned in [6,7]. [...]the integration of renewable energy resources (RESs) into the MG system can be increased due to the flexible frequency qualities in the MMG system [8]. [...]the DG1 power output can be reduced as compared to the case of the MMG system with the single frequency control. [...]two BTB converters control the MG2 frequency in the case of the single frequency control scheme. [...]for the long-term operation of the MMG system with the use of the single frequency control strategy, the state-of-charge (SoC) of the ESS1 and ESS3 might reach to the limit faster than the case of using multi-frequency control strategy.