逆变器的设计摘要本文中主要介绍了小功率逆变器的设计,其主要包括两部分电路,一是主电路,另一个是控制电路。主电路主要包括:三相全桥电路,驱动电路:控制电路主要包括:单片机控制回路,SPWM波形发生电路,死区保护电路等。在主电路中,全桥逆变电路采用快速MOS管6N60A;驱动电路采用集成芯片R2130:控制回路中采用STC89C51单片机,数模转换采用AD7528芯片。逆变电路拓扑结构采用三相全桥逆变,应用电路仿真软件Multisim对电路各部分进行实验仿真,对电路各部分参数选择进行理论分析,利用51系列单片机编写程序。最终设计出频率可调整,输出电压可以调整的逆变器。关键词:SPWM,单片机,IR2130,AD7528卫The design of the inverterABSTRACTThis article introduces a small power inverter design,which mainly includes two parts ofthe circuit.first,the main circuit,and the other is control circuit.The main circuit include:three-phase full-bridge circuit,driver circuit;control circuit including:MCU control circuit ofSPWM waveform generating circuit,the dead zone protection circuit.In the main circuit,thefull-bridge inverter circuit with a fast MOS transistor 6N60A;driver circuit uses integratedchip IR2130;control circuit used in the MCU STC89C51.AD7528 chip,digital to analogconversion.Inverter circuit topology of three-phase full-bridge inverter,the application circuitsimulation software,Multisim to experiment with the various parts of the circuit simulation,theoretical analysis of circuit parameters selection,the use of 51 series microcontrollerprogramming.The final design of the inverter frequency to adjust the output voltage can beadjusted.KEY WORDS:SPWM,MCU,IR2130,AD7528四目录摘要…IABSTRACT…4+4II1绪论11课题研究的目的及意义…1.1.1课题研究的目的.…1.1.2课题研究的意义1.2逆变器在国内外研究现状...…21.2.1国内逆变器研究现状…21.2.2国外逆变器研究现状..21.3逆变器的介绍.…31.3.1逆变器的分类.31.3.2逆变器与变频器的区分31.4主要研究内容32逆变器的组成.……42.1逆变系统电路框图…2.2SPWM波的方案选取.…2.3逆变电路的控制方式论证….62.4主电路结构的方案选取.93逆变器硬件电路分析与仿真….103.1系统硬件电路的分析..103.1.1桥式电路分析103.1.2控制回路电路的设计.123.1.3SPWM波硬件电路..153.1.4驱动电路的设计..183.1.5延时保护电路的设计.193.1.6DCDC模块电路203.2控制电路的仿真1…1213.2.1 MULTISIM仿真软件介绍.213.2.2SPWM波电路的仿真.23.23全桥逆变电路的仿真..233.2.4延时电路的仿真..243.3滤波回路的参数计算.25Y4逆变器的软件设计.274.1KELC仿真软件介绍.274.1.1KELC51的特点.274.1.2KELC51的数据类型284.2控制系统程序流程图▣4444404▣44▣44▣44444▣44444444.44444.444444444。,05总结..32参考文献1……133致谢135附录1:死区保护电路36附录-2:主电路.…37附录I-3:单片机控制电路f.138附录I4:DA电路…39附录I-5:IR2130应用电路40附录:程序清单4们
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