Research And Design Of Lightweight Induction Heating Power Supply Based On DSP

With modern electronic technology and the rapid development of productivity,human society are more and more big,medium frequency induction heating power supply market of induction heating power supply combined with automatic production line production mode is more and more widely,lightweight,high power factor,as well as digital become particularly important in the application of induction heating power supply.This paper focuses on the research and design of medium frequency induction heating power supply based on the lightweight,digital and high power factors.Firstly,this paper studies,analyzes and designs the rectifier,filter and inverter.Lightweight is mainly focused on the design of each module hardware circuit lightweight and radiator lightweight design,which includes the radiator lightweight material selection and design.The lightweight design is about 32%lighter than conventional heating power.Digitalization is mainly reflected in that the induction heating power supply designed as the research in this paper is based on TMS320F28335DSP chip to realize digital control.High power factor is mainly reflected in the induction heating power supply phase-locked loop technology,power regulation mode and soft switch technology to achieve.The phase-locked loop is designed and studied in this paper to conduct real-time sampling of load voltage and current through system time and device delay time compensation.Anti-saturation PI adjustment is adopted for rapid system response to shorten system response time,thus improving system real-time performance and ultimately achieving high efficiency.The high efficiency of the power regulation mode is mainly reflected in the phase-shift power regulation mode adopted in this paper.By changing the power size of the system on the basis of keeping the switching device frequency consistent with the system frequency under the power regulation state,the high efficiency is realized.Through experimental verification,the real-time performance can reach the level of 60us.Finally,the hardware platform is built and combined with software debugging to finally verify the feasibility of its control strategy.