Abstract: The power conversion system in microgrid adopts flexible control strategy to supply the demand load

after transforming various energy sources. The power conversion system enables the microgrid to be connected to

the grid as a controllable whole unit or to operate independently. Its control strategy is particularly important for the

safe and stable operation of the microgrid. Therefore，power conversion system is widely concerned and studied in

the industry，and a lot of research results have been obtained. On the basis of previous studies，the control strategies under various working modes were analyzed and classified. The advantages and disadvantages of each control strategy were summarized，and the problems to be solved in the application of microgrid system and power

conversion system were listed. This provides a reference for the application and further research of power conversion system control strategy applied to microgrid.

    Key words: microgrid；power conversion system（PCS）；control strategy