An improved droop algorithm for wireless parallel inverters

The mathematical model of parallel inverters is analyzed detailedly.Then an improved droop algorithm is proposed to realize wireless parallel operation.For this algorithm,active power and reactive power signals are included in the droop expression;and the differential signals of active power and reactive power are included.The active power and reactive power signals are used to obtain good steady-state performance;the differential signals are used to improve dynamic performance.Simulation results indicate that the wireless parallel inverters have good dynamic and steady-state performances,the power sharing performance;and circulating current restraining performance among inverter modules are also satisfactory by using the proposed algorithm.