毕业论文：《矿用变频器的设计》.doc

PAGE PAGE 12 摘 要 本文介绍了采用 32 位 ARM 处理器为核心，配以 SPWM 专用芯片 SA8282，以 VVVF控制算法的交—直—交电压型矿用隔爆型变频调速装置的软硬件设计，采用热管散热技术解决了煤矿井下变频器隔爆与散热的矛盾。为了消除谐波,节能降耗,我们做了大量的研究和分析。本文首先对 SPWM 控制技术从原理上进行了详细的描述,指出了谐波问题的研究方向和谐波研究的意义。通过计算所得到的结果,以图文的形式对谐波问题进行了分析,得出了相应的结论,并且对影响 SPWM 输出电压谐波频谱分布的因素进行了详细的讨论。结合本课题的研究成果，给出了采用无源 LC 滤波技术、RFI滤波技术解决了变频器的谐波污染、EMC（电磁兼容）问题，本文主要的研究内容有以下几个方面： (1)交—直—交电压型变频器的硬件设计，完成了采用 V/F 控制技术的软件设计. (2)采用无源 LC 滤波技术和 RFI 滤波技术解决了变频器的谐波污染和 EMC 问题。 (3)文章最后对该变频器装置能较好地满足工 程实践要求进行了总结，但依然有许多工作值得开展。 总之，伴随着现代电力电子技术的迅速发展，特别是大规模集成电路和微型计算机的迅速发展，现代控制理论在电气控制技术工程等方面的不断渗透，多种新型控制理论、技术和方法的不断涌现，交流电动机的变频调速技术将展现出更广阔的前景（社会效益和经济效益）。 关键词 变频器 调速 隔爆 谐波 Abstract This paper introduced the 32-bit ARM processor as the core, match with SPWM special-purpose chip in SA8282, control algorithm of VVVF into - straight – pay voltage type flameproof variable frequency variable speed device, In this paper, first, from the principle on SPWM control technology, a detailed description of the harmonic problems pointed out the research direction and the significance of harmonic research. Through the calculation results obtained in the form of pictures, the harmonic problem is analysed and corresponding conclusion, and influence SPWM output voltage harmonic spectrum distribution factors are discussed in detail. Combining this topic research achievement, gives using passive LC filtering technology, RFI filtering technology solved inverter harmonic pollution, EMC (the electromagnetic compatibility) questions.This paper mainly studies the content in the following aspects: (1) Completed pay - straight into the voltage type inverter -- hardware design, completed using V/F control technology of software design. (2) Using passive LC filtering technology and RFI filtering technology solved inverter harmonic pollution and EMC problem. (3h) In the end, the essay this converter device can well satisfy engineering practice demands are summarized, but still have a lot of work is worth development. In short, with modern power electroni