感应加热电源数字控制技术的研究

【作者】 许静；

【导师】 赵荣祥；

【作者基本信息】 浙江大学 ， 电机与电器， 2002， 硕士

【摘要】 中频感应加热以其高效、无污染、易控制等优点，已广泛应用于工业加热领域。鉴于目前感应加热装置很多采用模拟控制电路、感应加热电源的数字控制技术发展不成熟这一事实，本文探讨了并联式中频感应加热电源的微机控制技术。 通过阅读资料和文献，在对中频感应加热及其相关技术的发展、现状和趋势作了一个比较全面而深刻的研究基础上，论文分析了并联感应加热电源闭环控制的控制策略，并采用闭环开环分离的方法，解决了零电压启动问题；设计了中频感应加热电源的微机控制系统。通过实验的测试，验证了该微机控制系统的灵活性、可靠性和实用性。更多还原

【Abstract】 The induction heating appliances of thyristor have been widely used in industrial cooking. An approximate analysis of medium frequency parallel converter used in power supply controlled by microcomputer is presented in this work. The proposed approach may be applied to converters whose industrial applications are induction heating and metal melting installations. It is shown that closed loop circuit feedback control and opened loop circuit control are separated during the zero-power start-up process. The self-starting of the medium frequency parallel converter is achieved. A practical design in hardware and software of the control system is also obtained. The experiment results on power system proved the flexibility and reliability of the digital system.更多还原