單相交直交逆變電源的設(shè)計(jì)
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中文摘要
現(xiàn)代開關(guān)穩(wěn)壓電源已廣泛用于基礎(chǔ)直流電源，交流電源，各種工業(yè)電源，計(jì)算機(jī)電源，UPS不間斷電源，醫(yī)療和照明電源，雷達(dá)高壓電源，音響和視頻電源等。本文設(shè)計(jì)的單相脈寬調(diào)制逆變電源屬于交流電源(AC-DC-AC逆變)，采用電壓反饋控制，通過中斷功率通量和調(diào)節(jié)占空比的方法來改變驅(qū)動(dòng)電壓脈沖寬度來調(diào)整和穩(wěn)定輸出電壓。其主電路構(gòu)成采用的是Boost電路和全橋電路的組合?？刂齐娐凡捎昧?片集成脈寬調(diào)制電路芯片，一片用來產(chǎn)生PWM波，另一片與正弦函數(shù)發(fā)生芯片做適當(dāng)?shù)倪B接來產(chǎn)生SPWM波，集成芯片比分立元器件控制電路具有更簡(jiǎn)單，更可靠的特點(diǎn)和易于調(diào)試的優(yōu)點(diǎn)。
本文詳細(xì)的分析了該逆變電源的工作過程，并推導(dǎo)了重要公式。最后對(duì)該逆變電源進(jìn)行了計(jì)算機(jī)仿真和樣機(jī)實(shí)驗(yàn)，驗(yàn)證了其可行性和有效性。

關(guān)鍵詞：逆變器;正弦脈寬調(diào)制;場(chǎng)效應(yīng)管


Abstract


Power supply is core and drive of electric equipments. With the flying development of power electronics technology, It has come forth continually that is IC of high intelligence, new type electronic device and topology since 1990's. As aresult, A lot of new type steady-voltage power supply has been created that is indescribable ten years ago. High-frequency switching power supply is a branch of power supply. It possesses many advantages such as low-power, high-frequency, small- volume, light-weight, wide-range of steady voltage, credibility and security. It has been received and upheld by the people. It involves a great deal content that is extensive and intricate. It bestrides subject of three aspects. The first is IC control chip system of micro-electronics; The second is electronic devices of high-performance power semiconductor such as MOSFET and IGBT. The third is various devices of inductance and magnetic materials of transformer how to be utilized and rolled rationally.
Steady voltage power supply of modern switching has been applied in the following aspects widely. They are DC power supply, AC power supply, industry power supply, computer power supply, UPS power supply, power supply of medical treatment and lighting, high voltage power supply of radar, power supply of sound and video frequency and so on. Single-phase Sinusoidal Pulse Width Modulation Inverter Power Supply in this paper belongs to AC power supply (AC-DC-AC convert). Control mode adopts feedback of voltage control. The methods of intermitting power flux and changing duty-cycle can change pulse width of drive voltage that adjust and rectify output voltage ultimately. The main circuit is made up of compounding of Boost and the full-bridge circuit. The control circuit adopts two chips of integrated pulse width modulation. One produces PWM waveform. The other connects chip of producing sinusoidal signal properly, which brings SPWM waveform. Integrated chip is more simple, reliable and laboratorial than discrete component.
The operation of inverter power supply is thoroughly analyzed and some important formulas are deduced. Finally, the principle of operation are illustrated and verified on emulation and experimental results.

Key words: inverter; Sinusoidal Pulse Width Modulation,MOSFET



目錄


第1章 概述 1
1.1現(xiàn)代電源發(fā)展概況 1
1.1.1 交流穩(wěn)壓電源 1
1.1.2 UPS及交流凈化電源 2
1.1.3 工業(yè)電源的發(fā)展 2
1.1.4 直流開關(guān)電源 2
1.1.5 軟開關(guān)——PWM功率變換器 3
1.1.6 分布電源技術(shù)的發(fā)展 4
1.1.7 功率因數(shù)校正技術(shù) 4
第2章 PWM的工作原理 5
2.1 PWM的基本原理 5
2.2 PWM型逆變電路的控制方式 8
2.2.1 異步調(diào)制 8
2.2.2 同步調(diào)制 9
2.3 SPWM波形的生成方法 9
第3章 逆變電源組成及主電路的設(shè)計(jì) 10
3.1 系統(tǒng)組成 10
3.2 主電路組成及工作原理 11
3.3 主電路設(shè)計(jì) 11
3.3.1 共模抑制環(huán)節(jié) 11
3.3.2 工頻變壓器設(shè)計(jì) 13
3.3.3 限流電路設(shè)計(jì) 14
3.3.4 Boost變換器設(shè)計(jì) 15
3.3.5 橋式逆變器基本原理 20
3.4 主電路圖 21
第4章 逆變電路的控制電路設(shè)計(jì) 22
4.1 輔助電源設(shè)計(jì) 22
4.2 控制電路框圖 23
4.3 SG3524和ICL8038芯片介紹 24
4.3.1 SG3524芯片 24
4.3.2 ICL8038芯片 25
4.4 控制電路設(shè)計(jì) 27
4.4.1 利用SG3524生成SPWM波形 27
4.4.2 驅(qū)動(dòng)電路設(shè)計(jì) 28
4.4.2.1 驅(qū)動(dòng)電路工作原理 28
4.4.2.2 驅(qū)動(dòng)電路參數(shù)原理圖 29
4.4.3 過流保護(hù)電路 30
4.4.4 反饋調(diào)壓電路 30
4.4.4.1 反饋調(diào)壓電路工作原理 30
4.4.4.2 反饋調(diào)壓電路主電路圖 31
4.5 控制電路圖 32
第5章 結(jié)論與展望…………………………………………………………………………..33
致謝……………………………………………………………………………………………….34
參考文獻(xiàn)………………………………………………………………………………………. 36



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