Control method of the cooperation system of storage battery and power converter, and power conditioning system

摘要

Provided are a PCS configuration for implementing independent operation parallel control together with other accumulator cells-PCS and equalizing the charging ratio of the accumulator cells, and a control method, in a linking system for a PV and accumulator cells. To this end, proposed is a method for controlling a linking system for accumulator cells and power conversion devices in which the accumulator cells and the power conversion devices are connected one-to-one, and combinations thereof are connected on an AC-side. In this method, control is carried out such that the accumulator cell charging ratio is equal, by each of the power conversion devices determining the charging/discharging speed of the corresponding accumulator cells according to the charging ratio of the accumulator cells, and allocating charging/discharging power using the power conversion devices in accordance with the charging/discharging speed.