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正弦波逆变电源的设计——毕业设计
32页1、哈尔滨理工大学学士学位论文正弦波逆变电源的设计摘要 此正弦波逆变电源的设计,用10-14.5V的直流电作为输入电压,输出电压为36V,频率为50HZ,额定满载输出功率为50W的正弦波交流电。该正弦波逆变电源以TMS320芯片为控制核心,由Boost升压电路和全桥逆变电路构成系统主电路,逆变部分采用SPWM调节方式,利用闭环反馈调节控制输出电压。在控制电路上,以TMS320控制驱动电路,驱动DC/DC变换电路以及DC/AC变换电路,TMS320还控制SPWM的计算和实时电压、电流采样运算;在保护上,电路具有欠压、过压、过流保护、输出短路自恢复和频率可调,以及输出电压可调等功能。其系统效率高,性能稳定,该电源很好的完成了各项指标,输出功率达到49.6HZ,THD为1.6%,逆变效率达到93%,欠压保护点8.9V,过压保护点16.2V;当欠压时,输出关闭。关键词 :正弦波; SPWM; 升压 ; 逆变器 Research on the single-phase sine wave inverter powerAbstractThis design of sine wave inverter,
2、 with 10 to 14.5V DC as the input voltage .The sine wave AC output voltage is 36V,the frequency is 50HZ, and its rated full load output power is 50W. The sine wave inverter is using TMS320 chip as the control core. Its system main circuit is consist of the Boost circuit and full-bridge inverter circuit,The inverter part adopts SPWM adjustment method, and use closed-loop feedback to control the output voltage .At the control circuit, with TMS320 to control drive circuit, driving DC / DC converter
3、 circuit and DC / AC converter circuit, TMS320 also controls SPWM computing and real-time voltage and current sampling operation. In the protection, the circuit has undervoltage, overvoltage, over-current protection, output short circuit self-recovery and frequency is adjustable, and the output voltage is adjustable functions. Its system has high efficiency and stable performance. the power finishes every indicators very well, the output power reaches 49.6HZ, THD reaches 1.6%, inverter efficienc
4、y reaches 93%, the undervoltage protection point reaches 8.9V, overvoltage point reaches 16.2V; when it is overvoltage, the output is off.Keywords: sine wave; SPWM; boost; inverter目录摘要IAbstractII第一章 绪论11.1 课题背景11.2 研究现状及趋势21.3 逆变电源的概述41.3.1 电源的特点41.3.2 逆变电源的概念41.4 逆变原理51.4.1逆变器的性能指标与分类51.4.2 逆变电路的分类51.4.3逆变电路用途51.4.4逆变电路的工作原理61.5 课题研究的内容及完成的工作61.6本章小结7第二章 主电路的设计82.1系统结构框图82.2 系统主电路方案的选择82.3 逆变器主电路的拓扑选择92.4 电源系统主控制器的选择102.4.1 TMS320F28027简介102.4.2 TMS320F28027器件特性112.5 本章小结13第三章 分析与计算133.1 DC-DC变
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