Design Of SVPWM Inverter Based On Digital Signal Processor

In recent years,DC-AC inverter technology in the modern new energy,micro-grid and its grid-connected power generation,UPS power supply has a wide range of applications.The research content of this paper is mainly from the development of a company,the purpose is to use digital signal processor,through the hardware circuit design and software programming to achieve digital control inverter.The overall system can produce the same frequency with the public grid,the same phase of the AC power to feed back the grid,to achieve the purpose of energy conservation and environmental protection.This paper mainly designs the DSP program based on TMS320F28335,and uses the space voltage vector SVPWM to modulate the three-phase inverter bridge switch to carry on the overall scheme.The main design of the inverter system of the main inverter circuit and the inverter digital control system hardware and software.And the three-phase full-bridge inverter circuit is taken as the research object,and the voltage space vector technology is analyzed.At the same time,a brief overview of different types of grid-connected inverter strategy is proposed.The grid-connected inverter model based on L-filter is selected as the research object.The current component is adjusted by PI controller.The main circuit simulation module of three-phase grid-connected inverter is constructed by SVPWM.TMS320F28335 as the main control chip to control the inverter,while the design L output filter,isolation circuit,drive circuit.Analysis of SVPWM control algorithm,in the DSP environment to debug seven paragraphs SVPWM program.Finally,through experiments to prove that can be applied to the project,the battery DC power inverter AC power supply,and can run in parallel.