基于uc3524的逆变电源设计（学士学位论文）.docVIP

基于UC3524的逆变电源设计 逆变电源是一种采用电力电子技术进行电能变幻的装置，主要应用与银行、通信、医院、金融等重要机构。设计内容包括逆变电路原理分析、微机控制电路设计、主电路设计、主要开关器件驱动电路设计，系统抗干扰设计，保护设计，主电路设计采用开关频率高导通压降低功耗低的绝缘栅双极晶体管IGBT。逆变电源输入输出都经过变压器进行电气隔离，使整个电路系统与外接电网和负载完全电气隔离。电源保护电路主要有过流保护、过压保护、短路保护，通过将主电路中的电压电流信号反馈到控制电路中，实现系统自我保护功能。为保证输出稳定的交流电压，对交流输出电压进行取样，经过采样电路处理反馈到控制电路中进行分析，使输出电压幅值稳定在规定范围内。 关键词：逆变电源，IGBT，微机控制，保护电路 UC3524 INVERTER BASED POWER SUPPLY DESIGNED ABSTRACT Power inverter is an electrical energy using power electronics technology changing device, the main application and banking, telecommunications, hospitals, financial and other important institutions. Design elements include inverter circuit analysis, computer control circuit design, the main circuit design, the main switching device drive circuit design, system anti-jamming design, protection design, the main circuit design using high switching frequency to reduce power consumption low conduction voltage insulated gate bipolar transistor IGBT. Inverter input and output are electrically isolated through the transformer, so that the whole circuit system with external power grid and load complete electrical isolation. Main power supply protection circuit overcurrent protection, overvoltage protection, short circuit protection, through the main circuit voltage and current signal is fed to the control circuit, to achieve self-protection system. In order to ensure stable output AC voltage, the AC output voltage is sampled, the sampling circuit after processing the feedback to the control circuit for analysis, the amplitude of the output voltage within the specified stability. KER WORD：Power inverter，IGBT，protect current，short circuit protection, 目 录 前 言 1 第1章 逆变电源设计方案论证 3 1.1 设计背景 3 1.1.1 基于UC3524逆变电源的设计思路 3 1.1.2 逆变电源的工作原理 4 1.2 逆变电源的逆变电路及控制方案 4 1.2.1 逆变电路 4 1.2.1 逆变电路的驱动控制 6 1.3 逆变电源的特性分析 6 1.3.1 逆变电源的功能特性 6 1.3.2 逆变电源技术特性 7 1.4 设计方案总体规划 8 第2章 逆变电源硬件结构设计 9 2.1 逆变桥驱动器选择 9 2.1.1 逆变电路对驱动器的要求 9 2.1.2 逆变电路驱动器选择 9 2.2 逆变电源硬件设计 10 2.2.1 全桥逆变电路设计 10 2.2.2 驱动脉冲发生电路设计 13 2.2.3 逆变输出采样电路 15 2.2.