《IGBT变频系统设计》-毕业学术论文（设计）.doc

Ⅰ 题目：IGBT变频系统设计 摘 要 当今在工矿企业中，电动机是应用最广、数量最多的电气设备之一，电动机的运动及控制与企业的产品质量和效益密切相关。 直流马达调诉比较容易实现，只要改变加在马达两端的电压，马达转速就会改变。 交流马达就不容易实现，原因是它与端电压关联不大，但它却与电源频率关系甚大，因此我们就可以改变电源频率的方法对它进行调速，这就是变频调速的起源。 IGBT是一种易于实现通断的大功率的电子器件。利用它这一特点，可以方便将直流调制成等幅宽频可调的矩形脉冲串，可逆变的多种不同频率的正弦波。 关键词：IGBT；PWM；变频 Ⅱ Abstract In todays industrial and mining enterprises is the most widely Motors, the largest number of one of the electrical equipment, motor and control the movement of products and businesses closely related to the quality and efficiency. DC motors for v. relatively easy to achieve, as long as the change at both ends of the increase in motor voltage, motor speed will change. AC Motor is not easy to achieve, because it is not associated with the terminal voltage, but it has the power and frequency of a great relationship, so we can change the frequency of power its way to governor, and this is the origin of Frequency Control. IGBT is an easy to implement on-off of high-power electronic devices. The use of its features can easily be DC-amplitude modulation broadband adjustable rectangular pulse string, the inverter can be a variety of different frequency sine wave. Keyword : IGBT;PWM; frequency conversion 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc199820427 第1章 绪论 PAGEREF _Toc199820427 \h 4 HYPERLINK \l _Toc199820428 1．1概述 PAGEREF _Toc199820428 \h 4 HYPERLINK \l _Toc199820429 1.1.1静态特性 PAGEREF _Toc199820429 \h 5 HYPERLINK \l _Toc199820430 1.1.2 动态特性 PAGEREF _Toc199820430 \h 6 HYPERLINK \l _Toc199820431 1.2 IGBT的市场前景 PAGEREF _Toc199820431 \h 6 HYPERLINK \l _Toc199820432 1.3 变频器的主流结构 PAGEREF _Toc199820432 \h 7 HYPERLINK \l _Toc199820433 1.4 技术要求 PAGEREF _Toc199820433 \h 8 HYPERLINK \l _Toc199820434 1.5 变频的特性 PAGEREF _Toc199820434 \h 9 HYPERLINK \l _Toc199820435 第2章 方案论证 PAGEREF _Toc199820435 \h 9 HYPERLINK \l _Toc199820436 2.1 PWM脉冲的生成方法 PAGEREF _Toc199820436 \h 9 HYPERLINK \l _Toc199820437 2.1.1 完全由模拟电路生成 PAGEREF _Toc199820437 \h 9 HYPERLINK