Three-phase swarm micro-inverter system with cluster adjuster and control method

The invention discloses a three-phase swarm micro-inverter system with a cluster adjuster and a control method. A micro grid-connected inverter is sensitively controlled by arranging a constant swarm micro-inverter and a free swarm micro-inverter, and meanwhile, the cost is reduced; the cluster adjuster uses a particle swarm algorithm as a power algorithm, so that the power balance is adjusted and the power consumption is reduced; double-level distribution type control is used, so that the micro-inverters exchange information through a local communication network, the cluster adjuster does not need to control each micro-inverter to switch, and the long-distance communication and the cost consumption can be reduced; and when each-phase input power is varied, the entire working efficiency of the micro-inverter can be ensured by switching a sub swarm of the free swarm micro-inverter. The control method is easy to realize, so that the adverse effect on entire current output, caused by the problems that a photovoltaic cell array can not illuminate in a balanced manner, certain photovoltaic cells are damaged and the like, can be effectively solved.