Description: 该电源主要分为整流、变压部分，调压、稳压部分以及控制部分。具体地说是用开关电路实现整流与初级变压，用可调三端稳压器实现调压与稳压，而用单片机控制整个电源的工作-Mainly divided into the power rectifier, transformer parts, regulator, voltage regulator and the control of some parts. Specifically the switch circuit and primary transformer rectifier, three-terminal adjustable voltage regulator voltage regulator and voltage regulator to achieve, and the use of single-chip microcomputer to control the work of the entire power Platform: |
Size: 245760 |
Author:xiang |
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Description: A New Low-Frequency State Model of a Three-Phase Three-Switch Three-Level
Fixed-Frequency PWM Rectifier Platform: |
Size: 669696 |
Author:raj prasad |
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Description: Abstract: Randomized modulation is of increasing interest in power
electronics and also holds promise for reducing filtering requirements
in ac/ac, dc/dc converter application and reducing acoustic noise in
motor drive applications. This paper deals with the power spectrum
density (PSD) estimation methods of the random controlled pulse
width modulation (RPWM) single-phase structured boost rectifier.
Estimated PSD is also experimentally verified. The switch-mode
operation of the converter results in Electromagnetic Interference
(EMI) which is produced due to large di/dt and dv/dt. In addition to
all steps to minimize the generation of EM1 (i.e. introduction of
RPWM), improvement of power spectra will also be considered. Platform: |
Size: 337920 |
Author:venkatesh |
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Description: 本论文设计了由AT89C52单片机为控制核心,用红外线为监测装置的防盗报警系统。该系统中红外对管作为红外线的发射和接收部分。发射部分采用红外发光二极管，而使用光敏三极管作为接收部分，接收红外发光二极管发出的红外线（不可见光）。单片机将通过内部的软件系统检测到接收管的导通或截止状态,并根据检测到的信号状态,进行判断并输出报警信号, 直至按复位按钮或电源开关。声光报警信号由9014三极管驱动构成声光报警电路,进行声光同时报警。电源部分采用变压器将220V交流市经变压器降压，桥式整流器整流，电解电容滤波，三端稳压管78L05稳压，最后得到整机要求的+5V稳定直流电源。实验表明，本系统成功运行。-This thesis is designed by AT89C52 microcontroller as the control center for monitoring device with infrared burglar alarm system. The system of infrared tube as infrared transmitting and receiving section. Emitting portion using infrared light emitting diode, a phototransistor as a receiving portion to receive the infrared ray emitted from the infrared light emitting diodes (not visible). The microcontroller will be detected by the internal software system to the turned on or off state of the receiver tube, and according to the detected signal state, to determine and output an alarm signal until a reset button or the power switch. Audible and visual alarm signal by 9014 transistor drive constitute sound and light alarm circuit, sound and light alarm at the same time. The power part of the transformer 220V AC City by the step-down transformer, bridge rectifier rectifier, electrolytic capacitor filter, three-terminal regulator 78L05 regulator, and finally get the machine requirements+5V Platform: |
Size: 1024 |
Author:陈媛 |
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Description:
本论文设计了由AT89C52单片机为控制核心,用红外线为监测装置的防盗报警系统。该系统中红外对管作为红外线的发射和接收部分。发射部分采用红外发光二极管，而使用光敏三极管作为接收部分，接收红外发光二极管发出的红外线（不可见光）。单片机将通过内部的软件系统检测到接收管的导通或截止状态,并根据检测到的信号状态,进行判断并输出报警信号, 直至按复位按钮或电源开关。声光报警信号由9014三极管驱动构成声光报警电路,进行声光同时报警。电源部分采用变压器将220V交流市经变压器降压，桥式整流器整流，电解电容滤波，三端稳压管78L05稳压，最后得到整机要求的+5V稳定直流电源。实验表明，本系统成功运行。-This thesis is designed by AT89C52 microcontroller as the control center for monitoring device with infrared burglar alarm system. The system of infrared tube as infrared transmitting and receiving section. Emitting portion using infrared light emitting diode, a phototransistor as a receiving portion to receive the infrared ray emitted from the infrared light emitting diodes (not visible). The microcontroller will be detected by the internal software system to the turned on or off state of the receiver tube, and according to the detected signal state, to determine and output an alarm signal until a reset button or the power switch. Audible and visual alarm signal by 9014 transistor drive constitute sound and light alarm circuit, sound and light alarm at the same time. The power part of the transformer 220V AC City by the step-down transformer, bridge rectifier rectifier, electrolytic capacitor filter, three-terminal regulator 78L05 regulator, and finally get the machine requirements+5V Platform: |
Size: 1871872 |
Author:陈媛 |
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Description: 国际电气工程先进技术译丛 电力变流器电路
本书揭示了整流、逆变、周波变流和变流电路的所有关键组分——描述其通断，电压和电流的关系，还有变流器的性质、运行、控制和性能及其实际应用。书中的许多方法基于经典数学，同时包含了大量有解的数字例题。本书主要介绍了单相和三相AC-DC整流器电路，功率因数和谐波性能，不同的DC-AC逆变器电路，PWM调制器和相位可控矩阵AC-AC周波变流器电路，降压、升压和降升压DC-DC变流器电路，以及用于DC-DC电路的开关模式变流器电源-International Electrical Engineering advanced technology on power converter circuit
This book reveals all the key components of the rectifier, inverter, Zhou Bo converter and converter circuit, which describes the relationship between the current and voltage, current and voltage, as well as the nature, operation, control and performance of the converter and its application. Many methods in the book based on classical mathematics, also contains a large number of digital solutions for example. This book mainly introduces the single-phase and three-phase AC-DC rectifier circuit, power factor and harmonic performance, different DC-AC inverter circuit, PWM modulator and phase controllable matrix AC-AC frequency converter circuit, buck, boost and drop boost DC-DC converter circuit, and for the DC-DC circuit switch mode converter power supply Platform: |
Size: 6087680 |
Author:黄叶 |
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Description: 基于F2812的维也纳VIENNA电源程序。本程序根据三电平六开关（Vienna）整流器的工作模态，结合两电平空间矢量（SVPWM）的工作原理，介绍了Vienna整流器SVPWM控制采用两电平SVPWM控制等效的方法。本文提出了一种适用于各种负载条件下的中点电位控制算法。-Based F2812 Vienna VIENNA power program. This procedure based on three-level six-switch (Vienna) rectifier operational modal, combined with the two-level space vector (SVPWM) works, describes the Vienna rectifier SVPWM control method uses two-level SVPWM control equivalent. This paper presents a suitable under various load conditions midpoint potential control algorithm.
Platform: |
Size: 3112960 |
Author:hebaolee |
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Description: 大家知道，市电或其他的交流电可以通过二极管或可控硅的单向导电性整流成直流电供
给需要使用直流电的场合。这种把交流电变换成直流电的过程我们叫做整流，也叫做顺变。那么逆变呢？我们自然地就会想到，应该就是把直流电变换成交流电的过程。逆变电源就是相对于整流器而言通过半导体功率开关器件的开通和关断把直流电变换成交流电的这么一个装置。(As you know, the power supply or other alternating current can be rectified by direct conduction of diode or thyristor to DC power supply.
Give an occasion where direct current is needed. This process of converting alternating current into direct current is called rectification, also called transformation. So what about the change? We naturally think that it should be the process of converting direct current into alternating current. The inverter is a device that converts the direct current into alternating current through the opening and closing of the semiconductor power switch compared with the rectifier.) Platform: |
Size: 2951168 |
Author:杨四季豆 |
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