Research Of Wireless Paralleling Control Method For Single Phase Inverters

With the increasing demand for energy, new energy-related technology has got more and more attention., Distributed power generation technology is a key technology for the new energy and renewable energy applications in one large-scale grid with kinds of sources. And the parallel inverter system is one key technology for distributed generation system. In all paralleling methods, the wireless one are more flexible and easier to expand and compared with the other methods.This paper describes the single phase inverter control strategy first, including filter design, the design of the current loop and voltage loop, and the implementation of hardware and software, then proves that the control strategy is effective through computer simulation and experimental validation. Then introduces the wireless paralleling method based on two 3kW single phase inverters with detailed control strategy based on the idea of droop control, the impact for the parallel control coursed by output impedance and the circulation characteristics of the system, and then discusses the impact for the accuracy and response speed coursed by hardware design and different power calculation methods in detail. The experiments demonstrate the effectiveness of parallel system design.