Research And Application Of Wireless Parallel Inverters Based On DSP

With the rapid development of society and economy,the traditional fossil energy has been decreasing,forcing people to look for new energy structure.Distributed gen-eration should be born.Inverter parallel control is an important means to improve the redundancy and reliability of power generation system,which can solve the problem of increasing capacity of distributed generation system.However,the distributed genera-tion has the characteristics of dispersion,which makes the inverter parallel operation in the space position is far away,it is difficult to achieve mutual communication.There-fore,the parallel control technology of the wireless inverter has become a hot topic in the industry.Power sharing and circulation problems need to be solved.In this paper,the topology and mathematical model of the main circuit of a single inverter power supply are introduced firstly,and the topology model and mathematical model of the two inverters are deduced.On the basis of the analysis,the causes of un-even power distribution and circulation are analyzed.Then,the traditional droop control strategy is introduced to solve the problem of power sharing and circulating current in the parallel inverter system.The basic princi-ple of the adjustment process and strategy analysis,strategy for the traditional droop control parameter coupling relationship exists in the control,not only by the frequency and amplitude of the droop control.Thus puts forward droop control strategy based on power decoupling.This control strategy can overcome the limitations of traditional droop characteristics,and can realize the system power sharing.Finally,taking TMS320F28069 as main control chip,design of hardware and software of wireless parallel inverter system,and in the Matlab/Simulink simulation environment,build wireless parallel inverter simulation model validation of power de-coupling droop control strategy is effective for power sharing.