单相交流调压电路课程设计汇本xx
单相交流调压电路
一、电路设计的目的及任务
1.1设计目的
电力电子技术是专业技术基础课，做课程设计是为了让我们运用学过的电路原理的知识，独立进行查找资料、选择方案、设计电路、撰写报告、制作电路等，进一步加深对变流电路基本原理的理解，提高运用基本技能的能力，为今后的学习和工作打下良好的基础，同时也锻炼了自己的实践能力。
1.2设计要求及分析
设计一个单相交流调压电路，要求触发角为45度.反电势负载E=40伏，输入交流U2=210伏。
分有LB和没有LB两种情况分析.L足够大，C足够大
1. 单相交流调压主电路设计，原理说明；
2．触发电路设计，每个开关器件触发次序与相位分析；
3．保护电路设计，过电流保护，过电压保护原理分析；
4．参数设定与计算(包括触发角的选择，输出平均电压，输出平均电流，输出有功功率计算，输出波形分析，器件额定参数确定等可自己添加分析的参数)；由以上要求可知该系统设计可分为四个部分：交流调压主电路设计、触发电路设计、保护电路设计及相关计算和波形分析部分。
下面分别做详细的介绍。
1.3 电路设计任务
1 进行设计方案的比较，并选定设计方案。
2 完成单元电路的设计和主要元器件的说明。
3 完成主电路的原理分析，各主要元器件的选择。
4 驱动电路的设计。
5 电路的仿真。
1.4 设计方案选择
采用两个普通晶闸管反向并联设计单相交流调压电路。
二．单相交流调压主电路设计及分析
所谓交流调压就是将两个晶闸管反并联后串联在交流电路中，在每半个周波通过控制晶闸管开通相位，可以方便的调节输出电压的有效值。
交流调压电路广泛用于灯光控制及异步电动机的软启动，也用于异步电动机调速。
此外，在高电压小电流或低电压大电流之流电源中，也常采用交流调压电路调节变压器一次电压。
本次课程设计主要是研究单相交流调压电路的设计。
由于交流调压电路的工作情况与负载的性质有很大的关系，因此下面就反电势电阻负载予以重点讨论。
2.1 电阻性负载
由于题目要求输出电压围为0～100V，所以方案可选电阻性负载或阻感性负载。
本电路采用单相交流调压器带阻感负载时的电路图如图2-1所示，在负载和交流电源间用两个反并联的晶闸管VT1，VT2相连。
图2-1
2.1.1 电阻性负载的交流调压器的原理分析
其晶闸管VT1和VT2反并联连接，与负载电阻R串联接到交流电源上。
当电源电压U2正半周开始时刻触发VT1，负半周开始时刻触发VT2，形同一个无触点开关。
若正、负半周以同样的移相角α触发VT1和VT2，则负载电压有效值随α角而改变，实现了交流调压。
移相角为α时的输出电压u的波形，波形如图2-2所示。
图2-2 输入输出电压及电流波形图
（1）建立模型仿真
根据原理图用matalb软件画出正确的仿真电路图2-3，
图2-3
（2）仿真参数设置
设置触发脉冲α分别为30°、60、90、120°。
与其产生的相应波形分别如图2-4、图2-5、图2-6、图2-7。
在波形图中第一列波为晶闸管电流波形，第二列波为晶闸管电压波形，第三列波为负载电流波形，第四列波为负载电压波形
图2-4晶闸管电流波形
图2-5晶闸管电压波形
图2-6负载电流波形。
单相交流调压电路(1000W)电力电子技术 课程设计(论文)
电力电子技术课程设计（论文）题目：单相交流调压电路（1000W）院（系）：电气工程学院专业班级：学号：学生姓名：指导教师签字：教师职称：起止时间：09-7-6至09-7-12课程设计（论文）任务及评语目录第1章课程设计方案 (1)1.1概述 (1)1.2 系统总体结构 (1)第2章课程设计内容 (3)2.1 (3)2.2 (5)2.3 (7)2.4 (8)第3章课程设计总结 (9)参考文献 (9) (10)第一章课程设计方案1.1交流调压电路概述把两个晶闸管反并联后串联在交流电路中，通过对晶闸管的控制就可以控制交流电力。
这种电路不改变交流电的频率，称为交流电力控制电路。
在每半个周波内通过对晶闸管开通相位的控制，可以方便的调节输出电压的有效值，这种电路称为交流调压电路。
交流调压电路可分为单相交流调压电路和三相交流调压电路。
单相交流调压电路是后者的基础，和整流电路一样，交流调压电路的工作情况也和负载性质有着很大的关系，因此分别对电阻负载和阻感负载分别予以讨论。
1.2 系统总体结构将一种交流电能转换为另一种交流电能的过程称为交流-交流变换过程，凡能实现这种变换的电路为交流变换电路。
对单相交流电的电压进行调节的电路。
用在电热控制、交流电动机速度控制、灯光控制和交流稳压器等场合。
与自耦变压器调压方法相比，交流调压电路控制方便，调节速度快，装置的重量轻、体积小，有色金属消耗也少。
结构原理简单。
该方案是由变压器、触发电路、整流器、以及一些电路构成的，为一台电阻炉提供电源。
输入的电压为单相交流220V，经电路变换后，为连续可调的交流电。
下图为系统总体结构框图。
图1 系统结构框图图1中的220V为交流市电输入，经过调压环节的变压器等电路转换为连续可调的交流电，输出连续可调的交流电源部分作用：为电阻炉提供电源。
第2章 课程设计内容2.1 单相交流调压电路工作情况与负载性质的关系 2.1.1电阻性负载图2.1 电阻负载单相交流调压电路图2.1为电阻负载单相交流调压电路图。
教学课件：5-2单相交流调压电路
单相交流调压有如下特点： 1)电阻负载时，负载电流波形与单相桥式可控整
流交流侧电流一致。改变触发延迟角α可以连续改
变负载电压有效值，达到交流调压的目的。
2)电感性负载时，不能用窄脉冲触发。否则当α <φ 时，
会出现一个晶闸管无法导通，并产生很大直流分量 电流，烧毁熔断器或晶闸管。
3)电感性负载时，最小触发延迟角αmin =φ(阻抗 角)。所以α的移相范围为φ～180°；电阻负载时移
第五章 交流变换电路
学习目标
1．掌握电力电子器件作为交流开关的典型应用电路。 2．掌握单相交流调压电路基本工作原理，了解电感 性负载阻抗角对控制角的影响。 3．了解三相交流调压电路的连接方式及性能特点。 4. 了解交-交变频的工作原理与电路结构。
《电力电子技术》
第二节 单相交流调压电路
单相交流调压电路可由一只双向晶闸管组成，也可以用 两 只 普 通 晶 闸 管 或 GTR 等 其 他 全 控 器 件 反 并 联 组 成 。 一、电阻负载
定在220V附近。
a)
b)
图5-11 单相交流稳压电路
《电力电子技术》
(1) α >φ 由图5-9a可见，α >φ，θ<180°，正负半波
电流断续。如图5-9a所示。
(2) α =φ 当α=φ 时，θ=180°，即正负半周电流临界连
续。相当于晶闸管失去控制，如图5-9b所示。
(3) α <φ ，若VT1管先被触发导通，而且θ＞180°。如
果采用窄脉冲触发，当ug2出现时，VT1管的电流还未到零， VT1管关不断，VT2管不能导通。等到VT1管中流过的电流为 零并关断时，ug2脉冲已经消失，此时VT2管虽受正压，但 也无法导通。到第三个半波时，ug1又触发VT1导通。这样 负载电流只有正半波部分，出现很大直流分量，电路不能 正常工作。因而电感性负载时，晶闸管不能用窄脉冲触发， 可采用宽脉冲或脉冲列触发。
单相交流调压电路
wt
当wt 时，i0 0，可得：
sin( ) sin( )etan
6.1.1 单相交流调压电路
VT1
☞负载电压有效值Uo
Uo
1
(
2U1 sin wt)2 d (wt)
U1
1 sin 2 sin(2 2 )
2
VT1
6.1.1 单相交流调压电路
☞晶闸管电流有效值IVT
IVT
1
2
2U1 Z
sin(wt
)
sin(
wt
)e tan
2
d(w t )
U1 sin cos(2 )
2 Z
c os
☞负载电流有效值Io
Io 2IVT
☞晶闸管电流IVT的标么值
I VTN I VT
Z 2U1
6.1.1 单相交流调压电路
sin( ) sin( )etan
引言
本章主要讲述 交流-交流变流电路
把一种形式的交流变成另一种形式交流的电路
交流电力 控制电路
只改变电压,电 流或控制电路
交流调压电路 相位控制
的通断,而不改 变频率的电路。
交流调功电路
通断控制
变频电路
交交变频 直接
改变频率的电路 交直交变频 间接
6.1 交流调压电路
6.1.1 单相交流调压电路 *6.1.2 三相交流调压电路
电源电流不含低次谐 波，只含和开关周期T有 关的高次谐波。
功率因数接近1。
图6-8 电阻负载斩控式交流调压电路波形
6.2 其他交流电力控制电路 6.2.1 交流调功电路 6.2.2 交流电力电子开关
6.1 交流调压电路·引言
■把两个晶闸管反并联后串联在交流电路中，通过对 晶闸管的控制就可以控制交流输出。
电力电子课程设计---单相交流调压电路
课程设计说明书课程设计名称：电力电子技术课程设计题目：单相交流调压电路班级：电气0902班姓名：学号：指导教师：时间：2011年06 月目录第一章前言 (2)第二章单相调压电路设计任务及要求 (3)2．1 设计任务及要求 (3)2．2 设计方案选择 (3)第三章单向调压电路单元电路的设计和主要元器件说明 (5)3. 1 单元电路的设计 (5)3.1.1主电路的设计 (5)3. 2 主要元器件说明及功能模块 (5)第四章驱动电路的设计 (6)4. 1 晶闸管对触发电路的要求 (6)4.1.1触发信号的种类 (6)4.1.2触发电路的要求 (6)4. 2 触发电路 (7)4.2.1单结晶体管的工作原理 (7)4.2.2单结晶体管触发电路 (9)4.2.3单结晶体管自激震荡电路 (9)4.2.4同步电源 (10)第五章保护电路的设计 (11)5.1过电压保护 (12)5.2过电流保护 (13)第六章单相调压电路主电路的原理分析和各主要元器件的选择 (14)6．1 主电路原理分析 (14)6．2 各主要元器件的选择 (17)6.3元器列表 (18)第七章仿真软件7.1仿真软件的介绍 (19)7.2仿真模型、仿真波形及其分析 (20)第八章心得体会 (23)附录参考文献 (24)第一章前言交流变换电路是指把交流电能的参数（幅值、频率、相位）加以转变的电路。
根据变换参数的不同，交流变换电路可分为交流电力控制电路和交-交变频电路。
通过控制晶闸管在每一个电源周期内导通角的大小（相位控制）来调节输出电压的大小，可实现交流调压。
它主要由调压电路、控制电路组成。
根据结构的不同，交流调压电路有单相电压控制器和三相电压控制器两种。
单相交流调压电路根据负载性质的不同分为电阻性负载和阻感性负载，电阻性负载的控制角的移向范围为0～π，阻感性负载的控制角的移向范围为φ～1800。
随着电力电子的飞速发展，交流调压电路广泛应用于电炉的温度控制、灯光调节、异步电动机软起动和调速等场合，也可以用作调节整流变压器一次电压。
单相交流调压电路的课程设计
电力电子技术课程设计说明书单相交流调压电路的设计院、部：电气与信息工程学院学生姓名：李啸龙指导教师：肖文英职称副教授专业：自动化班级：1101班完成时间：2014年5月摘要交流调压电路广泛用于灯光控制（如调光灯和舞台灯光控制）及异步电动机的软启动，也用于异步电动机调速。
在电力系统中，这种电路还常用于对无功功率的连续调节。
此外，在高电压小电流或低电压大电流直流电源中，也常采用交流调压电路调节变压器一次电压。
在这些电源中如采用晶闸管相控整流电路，高电压小电流可控直流电源就需要很多晶闸管串联；同样，低电压大电流直流电源需要很多晶闸管并联。
这都是十分不合理的。
采用交流调压电路在变压器一次侧调压，其电压、电流值都比较适中，在变压器二次侧只要用二极管整流就这样的电路体积小、成本低、易于设计制造。
单相交流调压电路是对单相交流电的电压进行调节的电路。
用在电热制、交流电动机速度控制、灯光控制和交流稳压器等合。
与自耦变压器调压方法相比，交流调压电路控制简便，调节速度快，装置的重量轻、体积小，有色金属耗也少关键词：交流；调压；电动机调速；电力系统；变压器；ABSTRACTAc voltage circuit is widely used in lighting control (such as dimmer and stage lighting control) and asynchronous motor, also used in the soft start-up induction motor drive. In the power system, the circuit is also often used to reactive power of continuous adjustment. In addition, in high voltage and low voltage, current, or small current dc power supply, often also adopt ac voltage transformer voltage regulating circuit. In these power such as using thyristor rectifier circuit control of high voltage, low current controlled dc power needs many thyristor series, Similarly, low voltage dc current needs many thyristor parallel. This is very reasonable. Adopt ac voltage transformer voltage circuit in the side, the voltage and current are moderate, as in transformer with diode rectifier side. This circuit, small volume, low cost, easy to design and manufacture.Single-phase ac voltage circuit of single-phase ac voltage is to adjust the circuit. Used in electric heating system, ac motor speed control, lighting control and ac stabilizer etc. Since the voltage transformer with decoupling method, exchange regulating circuit control and speed regulation, the device, light weight, small size, non-ferrous metal consumption is lessKey words: communication; Voltage regulation; Motor drive; Power system; Transformer;目录1 单相交流调压电路设计目的及务 (5)1．1设计目的 (5)1.2设计要求及分析 (5)1.3 设计方案选择 (5)2 单相交流调压主电路设计及分析 (5)2.1电阻负载 (6)2.1.1建立模型仿真 (6)2.1.2仿真参数设置 (6)2.1.3结果分析 (10)2.2阻负载感 (11)3 触发电路 (16)4 保护电路 (18)4.1保护电路设计 (18)4.2过电压的产生及过电压保护 (18)4.3晶闸管过电流保护 (19)5 总电路图 (21)6 单相交流调压电路参数设定与计算 (21)6.1单相交流调压变流器参数设定 (21)6.2单相交流调压变流器电路分析 (21)6.3输出平均电压、电流及输出有功功率 (22)7 总结与体会 (24)参考文献 (25)致谢 (26)附录 (27)1单相交流调压电路设计目的及任务1.1设计目的电力电子技术是专业技术基础课，做课程设计是为了让我们运用学过的电路原理的知识，独立进行查找资料、选择方案、设计电路、撰写报告、制作电路等，进一步加深对变流电路基本原理的理解，提高运用基本技能的能力，为今后的学习和工作打下良好的基础，同时也锻炼了自己的实践能力。
单相交流调压及调功电路课程设计
电力电子技术课程设计报告题目：单相交流调压及调功电路课程设计姓名学号年级专业系（院）指导教师一、引言较流-交流变流电路，即把一种形式的交流变成另一种形式交流的电路。
在进行交流-交流变流时，可以改变相关的电压（电流）、频率和相数等。
交流-交流变流电路可以分为直接方式（无中间直流环节方式）和间接方式（有中间直流环节方式）两种。
而间接方式可以看做交流-直流变换电路和直流-交流变换电路的组合，故交-交变流主要指直接方式。
其中，只改变电压、电流或对电路的通断进行控制，而不改变频率的电路称为交流电力控制电路，改变频率的电路称为变频电路。
采用相位控制的交流电力控制电路，即交流调压电路；采用通断控制的交流电力控制电路，即交流调功电路和交流无触点开关。
交流调压电路广泛用于灯光控制（如调光台灯和舞台灯光控制）及异步电动机的软启动也用于异步电动机调速。
在电力系统中，这种电路还常用于对无功功率的连续调节。
此外，在高电压小电流或低电压大电流直流电源中，也常采用交流调压电路调节变压器一次电压。
在这些电源中如果采用晶闸管相控整流电路，高电压小电流可控直流电源就需要很多晶闸管串联，低电压大电流直流电源需要很多晶闸管并联，十分不合理。
采用交流调压电路在变压器一次侧调压，其电压、电流值都比较适中，在变压器二次侧只要用二极管整流就可以了。
这样的电路体积小、成本低、易于设计制造。
其分为单相和三相交流调压电路，前者是后者基础，这里只讨论单相问题。
交流调功电路常用于电炉的温度控制，其直接调节对象是电路的平均输出功率。
像电炉温度这样的控制对象，其时间常数往往很大，没有必要对交流电源的每个周期进行频繁的控制，只要以周波数为单位进行控制就足够了。
通常控制晶闸管导通的时刻都是在电源电压过零的时刻，这样，在交流电源接通期间，负载电压电源都是正弦波，不对电网电压电流造成通常意义的谐波污染。
二、设计任务R图4-1u三、设计方案选择及论证3.1 带电阻性负载 3.1.1 原理图1为电阻负载单相交流调压电路图及其波形。
单相交流调压电路设计(Design of single phase AC voltage regulator circuit)
单相交流调压电路设计（Design of single phase AC voltageregulator circuit）DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view.Design of single phase AC voltage regulating circuit, design of single-phase AC voltage regulating circuit, AC voltage regulating circuit1 design objectives and requirements analysisThe design of a single-phase AC voltage regulator circuit requires a trigger angle of 45 degrees. The back EMF load is E=40 volts and the input is AC U2=210 volts. There are no LB and LB two of.L is large enough, C analysis of large enough requirements: 1. single-phase AC voltage design, main circuit principle; 2. trigger circuit design, analysis of sequence and phase of each switch trigger; 3. protection circuit, overcurrent protection, overvoltage protection principle and setting analysis; the calculation of 4. parameters (including the trigger angle, average output voltage, average output current, output active power calculation, output waveform analysis, determine the rated parameters of the device can add their own analysis parameters); from the above design requirements of the system can be divided into four parts: the AC voltage main circuit, trigger circuit design protection circuit design and related calculation and waveform analysis part. Here are a detailed introduction.2 the design selection adopts two common thyristor reverse parallel design single-phase AC voltage regulating circuit3 single-phase AC voltage regulation main circuit design and analysisAC voltage regulation means that the two thyristors are connected in series in an AC circuit after they are connected in parallel. In each half cycle, the effective value of the output voltage can be adjusted conveniently by controlling the phase of the thyristor. AC voltage regulating circuit is widely used in light control and asynchronous motor soft start, also used in asynchronous motor speed regulation. In addition, in the high voltage, small current or low voltage, high current power supply, AC voltage regulation circuit is often used to adjust the primary voltage of the transformer. The course design is mainly to study the design of single-phase AC voltage regulation circuit. Because the working condition of AC voltage regulating circuit is closely related to the nature of the load, the anti EMF and resistance load are discussed below.OneFigure 1 and Figure 2 are respectively the back EMF, the resistance load, the single-phase AC voltage regulation circuit and the waveform. The thyristors VT1 and VT2 in the picture can also be replaced by a bidirectional thyristor. The output voltage can be adjusted by controlling the phase shift control angle of the VT1 and VT2 in the positive half and half half cycles of the AC power U2.Fig. 1 single phase AC voltage regulation circuit with back EMFresistance loadFig. 2 waveform of input and output voltage and currentThe positive and negative half cycle alpha start times (alpha =0) are voltage zero crossing times. At t = Alpha Omega, applying trigger pulse to VT1, when VT1 positive bias is turned on, the load voltage waveform and power supply voltage waveform in the same; omega = Pi T, power supply voltage zero, due to a resistive load, current is zero, VT1 turned off. stayWhen Omega t = Pi + alpha, a trigger pulse is applied to the VT2, and the waveform of the load voltage is shifted when the VT2 is biased forwardThe same as the supply voltage waveform; at Omega t = 2 pi, the power supply voltage is zero, and the VT2 is turned off naturally. When the power supply voltage reverse zero, because of the back EMF load prevents current changes, so the current can not be immediately to zero, the thyristor conduction angle size, not only related to the control angle, but also related with the load impedance angle. The initial control points of gate gates of two thyristors are set at the starting point of each half of the supply voltage respectively. When the steady-state is equal to the positive and negative half weeks, the load voltage waveform is part of the supply voltage waveform, and the waveform of the load current (the supply current) is similar to that of the load voltage.4 trigger circuit designTwoThe thyristor trigger circuit is used to generate gate trigger pulses that meet the requirements and to ensure that the thyristor is switched off to conduction at the desired time. Broadly speaking, thyristor trigger circuit often includes a phase control circuit of the trigger time of the control, but here refers to pulse amplification and output. The thyristor trigger circuit shall meet the following requirements: 1) the width of pulse should ensure reliable thyristor conduction of the converter, back EMF load should be used in pulse width or pulse trigger; 2) trigger sufficient amplitude, on cold outdoor occasions, amplitude of pulse current should be increased to 3-5 times the maximum trigger current, pulse steepness may increase, the general should be 1-2A/us; 3) provided the trigger pulse voltage, current and power should not exceed the thyristor gate and the gate of the quota, the volt ampere characteristics of reliable trigger area; 4) electrical isolation of anti-jamming, stability and temperature the main circuit and the. According to the above requirements analysis, the KC05 phase shift trigger is used to design the trigger circuit.KCO5 silicon controlled phase shift trigger is suitable for AC phase control of bidirectional thyristor or two reverse parallel thyristor. The KC05 pin diagram is shown in figure 3:Figure 3 KC05 pin diagramKC05 trigger chip has the advantages of good sawtooth waveform, wide range of phase shift, simple control mode, easycentralized control, loss of protection, high output current and so on. It is an ideal circuit for AC dimming and voltage regulation. The KC05 circuit is also suitable for phase control of semi controlled or fully controlled bridge lines. Synchronous voltage from 15, 16 feet KC05 input, TP1 can be observed in the sawtooth wave, RP1 potentiometer to adjust the slope of the sawtooth, Rp2 potentiometer to adjust the phase angle, the trigger pulses from the pulse transformer output of ninth feet. Adjust potentiometer RP1, observe sawtooth slope change, adjust RP2, can observe the output pulse phase shift range, how to change the single-phase AC voltage trigger circuit diagram, as shown in figure 4:ThreeFig. 4 Schematic diagram of single phase AC voltage regulating trigger circuit5 protection circuit designIn the power electronic circuit, besides the choice of the parameters of the power electronic device and the design of the drive circuit, proper overvoltage, overcurrent, du/dt protection and di/dt protection are also necessary. 1 over voltage generation and over-voltage protection, the possible overvoltage in power electronic devices is divided into two categories: external factor, over voltage and internal overvoltage. Be mainly from overvoltage reasons, external lightning in the system operation process includes: 1) operating voltage: the overvoltage caused by separate switch, switching operation, fast switch off DC electromagneticprocess often caused by overvoltage in operation.Four2) lightning overvoltage: overvoltage caused by lightning stroke. The switching process, Internal Overvoltage mainly from internal devices of power electronic device includes: 1) commutation overvoltage due to thyristor full controlled devices or anti parallel after not immediately restore blocking diode in phase change after the end of the reverse current flow through the larger, so that the residual carrier recovery, when the restore the blocking capability, reverse current decreases sharply, so the current mutation due to inductance in the two ends of the thyristor full controlled devices or between anode and cathode with diode anti parallel overvoltage. 2) turn off overvoltage: the full controlled device works at higher frequencies. When the device is turned off, the voltage across the device is induced by the inductance of the line inductance due to the rapid decrease of the forward current. According to the different parts of the overvoltage protection circuit overvoltage protection circuit is generated, adding different, when reaching certain voltage, automatically open circuit protection, overvoltage protection circuit formed by the pathway of electromagnetic energy consumption, overvoltage storage, so that the energy is not added to the main switching device Overvoltage on protection of power electronic devices. In order to achieve the protection effect, the resistance capacitance protection circuit can be used. When the capacitor is connected in the loop, when the voltage spike voltage occurs in the circuit, the voltage at both ends of the capacitor can not be mutated, and the overvoltage in the circuit can beeffectively suppressed. A resistor connected in series with the capacitor can consume part of the overvoltage energy, while suppressing the inductance and capacitance in the circuit to oscillate. The overvoltage protection circuit is shown in figure 5.Figure 5 RC resistance capacitance overvoltage protection circuit2 over current protection. Excessive current may occur when the power electronics circuit is not operating properly or when a fault occurs. When the device breakdown or short circuit, trigger circuit or control circuit failure, overload, short circuit, reversible DC transmission system produces circulation or inverter failure, and AC power supply voltage is too high or too low, the lack of equal, can cause the flow. Since the current overload capacity of power electronic devices is relatively poor, it is necessary to carry out over-current protection for converters. Fast fuse is the most effective and widely used over-current protection method in power electronic devices.FiveFig. 6 overcurrent protection circuitThe overcurrent protection circuit as shown in Figure 6, the AC side connected fast fuse tube protection short circuit element short circuit and DC side of thyristor, but normal operation, fast fuse current rating is greater than the current of the thyristor protection effect of this poor quota, thecomponents of the short circuit fault. The DC side quick fuse only protects the short circuit from the load and has no protective effect on the component. Only thyristor directly connected to a fast fuse is the best protection for components because they flow through the same current and are widely used. As the first electronic circuit protection fuse protection only as part of the section of short circuit, DC fast circuit breaker setting protection in electronic circuit, overcurrent relay operating in overload.Parameter setting and calculation of 6 phase AC voltage regulation circuit1) parameter setting of single-phase AC voltage regulator: the trigger angle is 45 degrees, the back EMF load is E=40 volts, and the input is AC U2=210 volts. There are two cases of LB and no LB. The L is large enough and the C is large enough. 2) single-phase AC voltage regulator converter circuit analysis: in the single-phase AC voltage regulator circuit diagram, thyristor VT1 and VT2 can also be replaced by a bidirectional thyristor. The output voltage can be adjusted by controlling the turn-on angle of VT1 and VT2 in the positive half and negative half cycles of the AC power U2. The starting time (=0) of positive and negative half cycles is zero crossing time. In the steady state, it should be equal to the positive and negative half weeks. It can be seen that the load voltage waveform is part of the voltage waveform of the power supply, and the waveform of the load current is the same as the load voltage. 3) output average voltage, current and output active power calculation, first set resistance value R = 100, divided into LB and no LB two cases analysis. When there is no leakagesense LB, when the opening angle is set as alpha, the effective value of the load voltage is U0, the effective current value of the load current is I0, the RMS current of the thyristor current is IVT, and the power factor of the circuit is lambda. According to the formula, the following results are obtained:= U01 PI + alpha formula (2U2 sin T 2 D (omega) = Alpha PI Omega T) =201.87VI0 = U0, =2.02A, R(1)(2)SixIVT=1 PI + alpha 2U2 sin WT (2) d (WT) = 2 pi alpha 1.43A formula RLambda = P, U0I0, =0.961 = S, U 2, I0(3)(4)When the leakage inductance is considered, there is alwaysleakage in the transformer windings LB. Because the inductance is a hindrance to the current change, the inductance current can not be mutated, so the commutation process can not be completed instantaneously, but will last for some time. The influence of leakage inductance LB on the related parameters in the commutation process is analyzed below. In the commutation process, the instantaneous value of the output voltage isUd = Ua + LBDik, Dik, Ua + Ub = Ub = LB = DT DT 2(5)It can be seen that in commutation process, the rectifier voltage U D is the average value of the two thyristors with the corresponding two phase voltages simultaneously. Compared with the transformer leakage inductance, the U D is reduced by one piece each time, which leads to the average reduction of U D, and reduces the number of U D. This is called the phase change voltage drop. (6)Ud = X, B, IdPIWhere XB=w LB. XB converts the leakage inductance of the LB transformer to the two term leakage reactance. At the same time, we can obtain the change of overlap angle gamma, which can be obtained by the lower form.Cos alpha cos (alpha + lambda) =IdXB 2U 2(7)The change law of the change phase overlap angle with other parameters is as follows: when Id is bigger, the gamma is bigger; when XB is bigger, the gamma is bigger; when alpha <=90 degrees, the alpha is smaller, then the gamma is bigger. The influence of leakage inductance on the circuit is analyzed as follows: (1) the phase change overlap angle and the average output voltage of rectifier Ud are decreased. (2) the working state of the rectifier circuit is increased (3) the di/dt of the thyristor is reduced, which is beneficial to the safe opening of the thyristor. Sometimes artificial input line reactors are used to suppress the thyristor di/d t. (4) when the commutation occurs, the thyristor voltage gap occurs, resulting in a positive du/dt, which may cause the thyristor to mislead. Therefore, an absorption circuit must be added.Seven(5) commutation causes the voltage of the grid to become a source of interference.Harmonic analysis of 7 single-phase AC voltage regulating circuitThe load voltage and load current of single phase AC voltageregulating circuit are not sinusoidal wave, and contain a large amount of harmonic. Taking the resistive load as an example, the harmonic analysis of the load voltage U0 is made. Since the positive and negative half wave of the wave is symmetrical, there is no DC component or even harmonic.8 design summary and experienceThe power electronic technology curriculum design, so that we have the opportunity to learn the theoretical knowledge used in the classroom in practice. And through the comprehensive utilization of knowledge, the necessary analysis, comparison. And further verify the theoretical knowledge. At the same time, the curriculum design for our future study to lay the foundation. Guide us in the future study, many brains at the same time, should be good at finding and solving problems. The curriculum design, but also let me know, the most important thing is mentality, you get the title will feel difficult, but as long as full of confidence, will certainly be completed. Through the power electronic technology curriculum design, textbook for me to deepen the understanding of professional knowledge, usually is the theory of knowledge, in the curriculum design, truly design their own access to information, to complete a basic assembler. In the design process,I am more familiar with the principle of single-phase AC voltage regulator circuit and the design of trigger circuit. Of course, in this process, I also encountered difficulties, discuss each other through access to information, I accurately identify the errors and corrected in time, this is my biggest harvest, so that their practical ability has been further improved, let mehave more confidence in the future study and work. Through this curriculum design that I only theoretical knowledge is not enough to understand, only the theory knowledge and practice combined, draw conclusions from theory, the ability to improve their practical ability and independent thinking. In the design process will inevitably encounter various problems, and found his shortcomings in the design process, the previously learned knowledge to understand deeply enough, enough to grasp firmly, through the curriculum design, the previously learned knowledge of the new review and consolidate what they have learned knowledge.Eight7 referencesWang Yunliang [1]. The power electronic technology. Beijing: Electronic Industry Press, 2004. [2] Zhao Liangbing modern power electronics technology. Beijing: Tsinghua University press, 1999 [3] Huang Jun, Wang Zhaoan. Power electronic converter technology. Beijing: Mechanical Industry Press, 2001.[4] Wang Zhaoan, Huang Jun of power electronic technology. Beijing: Mechanical Industry Press, 2000.. Zhou Kening [5] power electronic technology. Beijing: Mechanical Industry Press, 2004NineOne。
单相交流调压电路课程设计报告书
单相交流调压电路课程设计电力电子技术是研究采用电力电子器件实现对电能的换和控制的科学，是20世纪50年代诞生，70年代迅速发展起来的一门多学科互相渗透的综合性技术学科。
这些技术包括以节约能源、提高照明质量为目的的绿色照明技术；以节约能源、提高运行可靠性并更好地满足产要求为目的的交流变频调速技术，以提高电力系统运行的稳定性、可控制性为目的，并可有效节能的灵括（柔性）交流输电技术等等。
随着电力半导体制造技求、徽电子技术、汁算机技术，以及控制理论的不断进步。
电力电子技求向着大功率、高频化及智能化方向发展，应用的领域将更加广阔。
交流调压电路广泛应用于灯光控制，如调光台灯和舞台灯光控制及其异步电动机的软启动，也应用于异步电机调速。
在电力系统中，这种电路也用于对无功功率的调节。
前言 (2)1 单相交流调压电路的设计 (4)1.1 设计目的和要求分析 (4)2 设计方案选择 (4)3 单向调压电路单元电路的设计 (5)3.1 单相调压主电路 (5)4 驱动电路的设计 (6)4. 1 晶闸管对触发电路的要求 (6)4. 2 触发电路 (6)4.2.1 KJ004可控硅移相电路 (6)4.2.2 KJ004可控硅移相电路工作原理 (7)4.3触发电路 (8)5 保护电路的设计 (9)5. 1 过电压的产生与保护 (9)5. 2 过电流的产生与保护 (9)6 相交流调压电路参数设定与计算 (11)6．1 电阻性负载 (11)6.2电路分析与计算 (12)7 主电路及触发电路各主要元器件的选择 (14)7.1 主电路图及触发电路 (14)7.2主要元器件的选择 (14)8仿真图及其结果 (15)8.1 仿真电路图 (15)8.2 仿真效果图 (16)致 (21)参考文献 (22)1 单相交流调压电路的设计1.1 设计目的和要求分析设计一个单相交流调压电路，要求触发角为60度。
输入交流U2=210伏。
要求分析：1. 单相交流调压主电路设计，原理说明；2．触发电路设计，每个开关器件触发次序与相位分析；3．保护电路设计，过电流保护，过电压保护原理分析；4．参数设定与计算(包括触发角的选择，输出平均电压，输出平均电流，输出有功功率计算，输出波形分析，器件额定参数确定等可自己添加分析的参数)；5. 相关仿真结果。
单相交流调压电路课程设计
设计收获：对单相交流调压电路有了更深入的理解和掌握
电路设计：考虑电路的稳定性和可靠性
控制策略：优化控制策略，提高系统的响应速度和稳定性
仿真验证：增加仿真验证的准确性和可靠性
实验验证：加强实验验证，提高设计的实用性和可靠性
创新性：提高设计的创新性和实用性，增加设计的竞争力
团队合作：加强团队合作，提高设计的效率和质量
单相交流调压电路可以调节电压，满足不同设备的需求。
单相交流调压电路可以降低电力系统的损耗，提高能源利用效率。
单相交流调压电路在电机控制中的应用广泛，如家用电器、工业设备等。
单相交流调压电路可以实现对电机的转速、转矩、功率等参数的精确控制。
单相交流调压电路可以提高电机的工作效率，降低能耗。
单相交流调压电路可以延长电机的使用寿命，提高设备的可靠性。
电路设计问题：确保电路设计正确，避免短路、断路等问题
电源问题：确保电源稳定，避免电压波动、电源故障等问题
调试问题：确保调试步骤正确，避免误操作、参数设置错误等问题
故障排除：遇到故障时，根据故障现象进行排查，找出问题所在并解决
单相交流调压电路可以提高电力系统的稳定性和可靠性。
单相交流调压电路在电力系统中的应用广泛，如家用电器、工业设备等。
确定设计目标：实现单相交流调压电路的功能
确定设计要求：满足性能指标、安全性、可靠性等要求
确定设计方法：选择合适的电路拓扑、元器件、控制策略等
确定设计步骤：需求分析、方案设计、仿真验证、硬件实现等
单相交流调压电路的拓扑结构设计实例
单相交流调压电路的拓扑结构选择原则
单相交流调压电路的常见拓扑结构
单相交流调压电路的基本结构
电源提供交流电，变压器将交流电转换为所需的电压，整流器将交流电转换为直流电，滤波器滤除直流电中的交流成分，稳压器稳定直流电的电压。
单相交流调压电路26页PPT
单相交流调压电路
1、战鼓一响，法律无声。——英国 2、任何法律的根本；不，不成文法本 身就是 讲道理 ……法 律，也 ----即 明示道 理。— —爱·科 克
3、法律是最保险的头盔。——爱·科 克 4、一个国家如果纲纪不正，其国风一 定颓败 。—— 塞内加 5、法律不能使人人平等，但是在法律 面前人 人是平 等的。 ——波 洛克
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11、越是没有本领的就越加自命不凡。——邓拓、知人者智，自知者明。胜人者有力，自胜者强。——老子 14、意志坚强的人能把世界放在手中像泥块一样任意揉捏。——歌德 15、最具挑战性的挑战莫过于提升自我。——迈克尔·F·斯特利