恶劣环境下军用空调控制系统研究

恶劣环境下军用空调控制系统研究

姓名：张海辉

专业：电子与通信工程

指导教师：常义林;苑江

摘要

论文重点研究军用空调研发中需要解决的高温制冷和低电压启动中出现的关键问题。在对军用空调高温制冷停机的原因分析的基础上，对军用空调控制系统进行了全新设计。包括如下工作，系统采用了温度控制技术、变频技术及通信技术，确定了温度控制规则、压缩机频率控制规则。具体的是通过产生SPWM信号，母线电压检测、校正，功率驱动，产生满足变频压缩机U/F特性的三相交流电，来实现军用空调的变频、变压控制。经过样机实际试验，证明以上研究工作实现了军用空调适应恶劣环境保证正常制冷运行的调控作用。全文共分四章及附录A，第一章介绍了本文的应用背景和研究目的：第二章讨论了解决目前问题的理论基础;第三章给出了控制系统的具体设计;第四章通过对试验报告和试验曲线进行分析，给出本文研究的结论;附录A给出了部分通信程序清单。

关键诃：军用空调高温制冷通信技术变频技术SPWM信号

Abstract

The main aim of this thesis is to design the controlling system of the airconditional equipment for military shelter which works in the hi曲temperature.Underlow voltage and hi曲temperature，the start of the operation of the air conditionalequipment for military shelter is a very difficult.To change this situation，controlling system of the air conditional equipment for military shelter must be effectively designed. the new designed controlling system，following technologies ale used，temperature control，frequency conversion and di西tal communication between modules.At sametime temperature control role and compressor frequency control rule are made out.Thecontrolling processing include generating SPWM waveform，the generatrix voltage examination，and power driving to create alternate voltage with U/F’characteristics required by the compressor of frequency conversion to control frequency and voltageneeded by the air conditional equipment for military shelter.The experiments show that designed new controlling system can work well under severe environments..

The thesis ale divided into four scctions，the first chapter introduced the application background and the fesearch goal;the second chapter introduced some theoretic basis which would be used in next sections;the third chapter gave the concrete design of the control system;the fourth chapter was experiments and conclusions;Appendix listed some partial communication procedures.

Key word：Air conditional equipment for military shelter High temperature refrigeration Correspondence technique

Frequency conversion SPWM waveform