单相交-直-交变频电路的设计及性能研究毕业论文设计.doc

摘要 随着电力电子技术、计算机技术以及自动控制技术的快速发展，单相交-直-交变频系统也得到了迅速发展，它显著的变频能力，广泛的应用范围，完善的保护效力，和易于实现的变频功能，获到了广大使用者的认可，在运行的安全可靠、安装使用以及维修维护等方面，也给使用者带来了极大的益处。 课题研究的单相交-直-交变频电路设计主要分为主电路和控制电路两部分，其中主电路还分为整流电路、滤波电路和单相桥式PWM逆变电路，而逆变部分则需要用到控制电路，控制电路分为控制电路、驱动电路和保护电路。课题的整流部分选用不可控的桥式整流电路；滤波部分则选用LC低通滤波，获得高频率的交流正弦波输出；逆变部分选用四个IGBT管组成的单相桥式逆变电路。控制电路主要以单片集成函数发生器ICL8038为核心设计的，生成两路PWM信号用来分别控制两对IGBT管；驱动电路则是选用了具备电气隔离的集成驱动芯片M57962L；保护电路选用双D触发器CD4013。用MATLAB软件仿真出设计的电路，其中对纯电阻负载以及电阻电感负载分别进行数据和波形的分析，并采取相关措施使最后输出的波形接近正弦波。 关键词：整流 滤波 逆变 IGBT PWM MATLAB Abstract With the rapid development of power electronics technology, computer technology, automatic control technology, single-phase orthogonal frequency system has been developing rapidly, its remarkable frequency capability, a wide range of applications, perfect protection, as well as easy to implement the conversion function, has been recognized by the majority of users in the safe and reliable operation, installation, repair and maintenance, etc., but also to bring users great convenience. Research of single phase AC- DC - AC inverter circuit design divided into the main circuit and control circuit, which can be divided into the main circuit rectifier circuit, filter circuit and single-phase bridge PWM inverter circuit, and inverter control part of the need to use circuit, the control circuit is divided into a control circuit, drive circuit and protection circuit. Subject rectifier bridge rectifier using uncontrollable; filtering section using LC low-pass filter to obtain a high-frequency sine wave AC output; inverter part of the single-phase bridge inverter circuit composed of four IGBT tube. Monolithic integrated control circuit ICL8038 function generator core designed to generate two PWM signals to control the two pairs of IGBT; drive circuit is the use of integrated driver chip M57962L with electrical isolation; protection circuit uses dual D flip-flop CD4013. Using MATLAB software simulation of the design of the c