《逆变焊机设计》-毕业论文.doc

PAGE 摘 要 本文首先介绍了逆变焊机的发展史.由于逆变电路拓扑形式的发展和半导体器件的成熟，出现了逆变焊机。其原理一般是采用整流-逆变-再整流的过程；即交流-直流-交流。分析了各种焊机的优缺点和逆变焊接电源的发展方向。 逆变式焊机具有独特的优点，在国内外已普遍得到公认，且正在全面推广应用。国内有些技术力量雄厚、研发基础好、生产经验丰富的单位和企业、已较好地解决了逆变式焊机的没计、制造工艺以及产品可靠性、安全性等问题。然而，在进入全面推广应用中，还有不少研发单位和企业尚未很好地把握产品的可靠性、稳定性和质量。 再之，即使已把握了产品质量可靠性和稳定性的研发单位和企业，随着输出功率的增大、对焊接性能要求的提高以及优化性能价格比等需求，也需利用新的功率器件和数字化技术，进一步提高产品性能，使产品不断升级，充分发挥逆变式焊机的优越性，如此等等，都要求逆变式焊机技术进一步发展。 本设计通过对主电路工作原理的分析，对整流滤波部分电路参数，逆变部分电路参数的分析，以及内部各个器件的要求进行了说明和分析。从而明确了焊接电源的性能结构和发展方向。 关键词：输出特性；主电路；驱动电路；焊机；绝缘栅双极晶体管 Abstract This paper first introduces the developing history of the welding inverter. Due to the development of inverter circuit topology form of semiconductor devices and mature, there was the welding inverter The general principle is to use the rectifier-inverter-the process of rectifying again; Namely communication-dc-ac analysis the advantages and disadvantages of various welding machine and development of inverter welding power source direction。 Inverter type welder has special advantages at home and abroad, has generally recognized, and is a comprehensive promotion application of domestic some strong technical force development foundation good production experienced units and the enterprise has better solve the welding inverter type of project DingYi products manufacturing and no reliability problem such as security, however, entered the overall the promoted application, and a lot of the research unit and enterprise has not yet have a better understanding of the stability and reliability of the product quality。 Again, even if the already mastered the product quality reliability and stability of the research unit and enterprise, with the increase of the power output of the welding performance requirements improving and optimizing the demand such as performance to price, also need to use the new power components and digital technology, further improve product performance, product escalated, give full play to the superiority of the inverter type welding m