基于TMS320F28335的感应加热式电源

发布时间：2018-09-09 12:47

【摘要】：随着人类社会的发展进步,感应加热技术逐渐登上人们的工作生活舞台。感应加热作为一种新型的加热形式,较传统的加热方式具有节能环保、智能便捷等诸多优点,并广泛的应用在透热、金属熔炼等领域。本文在研读大量国内外文献基础上,对感应加热电源拓扑进行分析,研究电源控制策略,并结合MATLAB/Simulink给出电源建模与仿真,最后设计600W/180kHz感应加热电源实验样机验证理论正确性与可行性。首先,对感应加热背景进行调查。在对比国内外感应加热发展状况、分析感应加热发展趋势、介绍感应加热工作原理以及阐述影响加热的三种效应的基础上,得出感应加热较传统加热的优势。其次,针对感应加热核心技术——感应加热电源进行研究。通过分析比较感应加热电源串并联谐振的工作方式、优缺点以及各种调功模式,本文选择感性移相调功串联谐振逆变器作为研究对象,通过锁相环技术实现电源输出电压电流相位锁定。再次,在MATLAB/Simulink下对感应加热电源进行建模与仿真。设计感应加热电源主电路参数,容量为600W/180kHz。选择感性移相调功作为功率控制方式,选择异或门鉴相器作为锁相环鉴相结构。采用PI控制器实现频率闭环,通过抗饱和PI实现功率闭环。然后通过仿真结果验证理论正确性。最后,设计感应加热电源软硬件平台。采用MOSFET作为逆变器开关管,并结合TI公司高速DSP芯片TMS320F28335实现电源频率和功率双闭环控制。在CCS中调试DSP程序,通过实验结果验证理论可行性。
[Abstract]:With the development and progress of human society, induction heating technology has gradually stepped onto the stage of people's work and life. As a new type of heating, induction heating has many advantages, such as energy saving, environmental protection, intelligence and convenience, and is widely used in the fields of heat permeation, metal melting and so on. On the basis of studying a large number of domestic and foreign literatures, this paper analyzes the topology of induction heating power supply, studies the control strategy of power supply, and gives the modeling and simulation of power supply combined with MATLAB/Simulink. Finally, the experimental prototype of 600W/180kHz induction heating power supply is designed to verify the correctness and feasibility of the theory. First, the background of induction heating is investigated. On the basis of comparing the development of induction heating at home and abroad, analyzing the development trend of induction heating, introducing the working principle of induction heating and expounding the three effects affecting heating, the advantages of induction heating compared with traditional heating are obtained. Secondly, the induction heating power supply, the core technology of induction heating, is studied. By analyzing and comparing the operation mode, merits and demerits of series and parallel resonance of induction heating power supply, as well as various power regulation modes, this paper chooses inductive phase shift power modulation series resonant inverter as the research object. The phase locking of output voltage and current of power supply is realized by phase locked loop technology. Thirdly, modeling and simulation of induction heating power supply under MATLAB/Simulink. The main circuit parameters of induction heating power supply are designed with capacity of 600W / 180kHz. The inductive phase shift modulation is chosen as the power control mode, and the phase discriminator is chosen as the phase locked loop (PLL) structure. The frequency loop is realized by PI controller and the power loop is realized by anti-saturation PI. Then the simulation results verify the correctness of the theory. Finally, the software and hardware platform of induction heating power supply is designed. MOSFET is used as inverter switch and TI high speed DSP chip TMS320F28335 is used to realize power frequency and power double closed loop control. Debug the DSP program in CCS, and verify the feasibility of the theory by the experimental results.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM924.01

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