Uniform modulation principle and ideal operation status of parallel inverters

This paper focuses on ideal operation status of the parallel inverter system. The limitation of conventional conclusion about ideal operation status of parallel inverters is discovered. And a new conclusion is introduced, that there will be no circulating current among parallel inverters when their unattached output voltages have the same frequency, phase, amplitude and be uniformly modulated. Simulation and experimental results verify the correctness of the concept of dasiauniform modulationpsila and the proposed conclusion.