The invention discloses a direct-current micro-grid non-communication
bus voltage recovery control method, which comprises the following steps of: sampling the output
voltage and current of each converter port, extracting the
voltage and current of an alternating-current small
signal, and calculating reactive power generated by the alternating-current small
signal; and adjusting the input of a secondary control loop
regulator by using reactive power generated by the
alternating current small
signal, and finally realizing the synchronization of the voltage instruction compensation values of the ports of the
converters. The control method provided by the invention does not need communication, has the advantages of low cost, high reliability, low
control complexity, high flexibility, high adaptability and the like, and can be used for optimizing the overall control performance of the
system.