The reliability of electricity supply can be improved by multi-module redundancy parallel inverter power system and the power capacity can be configured flexibly.The disturbance is easily introduced as the interconnect signal cables are exist in the traditional master-slave parallel and distributed parallel control strategy.The whole parallel power system runs risks of breakdown once the interconnect signals fault happened.Aiming at the above issues

a wireless parallel control scheme non-interconnection strategy of voltage amplitude and frequency coordinate droop based on active frequency modulation and reactive amplitude modulation is studied

principle of this strategy is analyzed.A method to fix voltage amplitude and frequency droop coefficient according to voltage amplitude

frequency and main circuit parameters is investigated

and a digital method for detecting active power and reactive power is given.The software simulation and experimental verification show that power and current can be equally distributed in parallel modules by this wireless parallel control strategy based on voltage amplitude and frequency coordinate droop control.