Output same-phase control method of input-series output-parallel (ISOP) distributed inverter system

The invention discloses an output same-phase control method of an input-series output-parallel (ISOP) distributed inverter system. A control loop of each inverter module is used for adjusting amplitude of respective inductance current according to voltage difference between an input voltage and an average input voltage so as to further adjust an active power output from each module to achieve input voltage equalization, meanwhile, the phase synchronization of the inductance current output from each inverter module is ensured by a phase synchronization step, so that the output current equalization of each module is achieved. By the method, the active power and the reactive power of the system are ensured to be equalized, the control method is simple, and a control structure of each inverter module is same. 本发明公开种ISOP分布式逆变器系统的输出同相位控制方法，各逆变器模块的控制环路根据自身输入电压与平均输入电压的压差，调节各自电感电流的幅值进而调节各模块输出有功功率以实现输入电压均分，同时辅以相位同步环节保证各逆变器模块输出电感电流相位同步，从而实现各模块输出电流均分。本发明方法保证系统的有功功率和无功功率都达到均衡，控制方法简单，各逆变器模块的控制结构相同。