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dainlu
- 此开关稳压电源由AT89S52单片机作为控制核心。系统包括AD采样，PID控制，PWM输出，构成闭环系统。交流电源输入到整流模块，经整流滤波后输出平稳的直流电压。该直流电压直接输出至IGBT全桥变换器模块。高精度AD转换器将后端输出的电压电流信号由模拟信号量变为数字量供给单片机进行数字PlD运算，经过PID控制运算后，由控制模块输出PWM调制波形至IGBT栅极，构成一个闭环系统，控制电压稳定输出，从而实现开关稳压电源控制系统。此外，可由键盘输入欲得电压值，从LCD显示实际电压值，人机交互界面友好
pfc_control
- boost-pfc升压型功率因素校正程序，可动态改变频率。-boost-pfc boost power factor correction procedures, dynamically change the frequency.
protel99-module
- Driver.ddb Mydot.ddb Wait.ddb 单片机.ddb 电源指示灯.ddb 仿真示例电路.ddb 脉宽调制信号控制电路.ddb 图3-5.ddb 图3-6.ddb 稳压电源电路.ddb 修改74LS373.ddb-Driver.ddbMydot.ddbWait.ddb Singlechip. Ddb power indicator. Ddb circuit simulation examples. Ddb PWM signal cont
PWM
- 此文件是用于智能小车的自动调速，通过PWM波形来改变脉冲占空比，从而该变电机两边的电压，又P=UI的，电机的功率改变，从而达到电机的调速。-This file is automatically used for the smart s speed through the PWM duty cycle waveform to change the pulse so that the variable voltage motor on both sides, and P = UI of, elec
shuangpwmbianhuanqi
- 本文以双Pwm变换器为基础，分析论述了电力电子装置的整流、逆变和回馈状态的国内外发展状况。随着科学技术的发展，电力电子装置的低功率因数和高谐波污染已经成为电网的两大主要危害，因此提高系统功率因数便是电力电子技术的发展趋势，本文阐述了功率因数的定义，脉宽调制的种类以及电压 型PWM变换器的原理、控制方法等内容，比较了脉宽调制的各种类型，详细推导了三相电压型PWM变换器的数学建模，指出系统各种控制方法的优缺点，着重表达了二相调制脉宽空间矢量WPM的算法推导，选用了系统主控芯片，编写了系统软件程序
TemperatureControlSystem
- 本系统严格按照题中所定参数及要求，构建了一个以MSP430单片机为控制核心的温度自动控制系统。该系统用PSB型负温热敏电阻作为温度传感器，以一种类R-F的方法测量木盒内实时温度，单片机用实时温度与预设温度值一起代入PID算式得出一个温度增量，再用此温度增量线性的控制PWM波的占空比，开关电源的输出电压也会随之变化，即制冷晶片的输入功率发生变化，因此制冷晶片制冷（加热）的功率随PWM波占空比变化，达到自动控温的目的。本系统制冷（加热）效果明显，效率高，界面友好，制作精致，能够胜任题中所定各项要求。
Code
- Source code for Multifunction Power Assisted Wheelchair. Use 2 SPCE061A chips. Slave MicroChip used for Voice-control, Master MicroChip used for Assistive and Electric control Wheelchair. Input: 3 buttons, 3 switch, 1 ADC, 2 x 2phase A/B encod
Soft-switching-phase-shifted-PWM-control-switch.ra
- 移相控制软切换PWM开关电源设计Soft-switching phase-shifted PWM control switching power supply-Soft-switching phase-shifted PWM control switching power supply
4-Conventional-and-direct-current-control
- This paper proposes an optimal control strategy for an HVdc light system using a direct current vector control mechanism. The proposed approach is compared with the traditional vector control method for different HVdc control requirements, su
PC-Fan-Control-using-ATtiny13
- PC Fan Control using ATtiny13... This application note describes the operation of 12 volt DC cooling fans typically used to supply cooling air to electronic equipment: These fans are typically based on two-phase Brushless DC (BLDC) motors drawi
WIND-RESEARCH
- On the Causes of Circulating Currents in PWM Drives With Open-End Winding AC Machines Phase-Shifting-Transformer-Fed Multimodular Matrix Converter Operated by a New Modulation Strategy An All-DC Offshore Wind Farm With Series-Connec
PWM-convertor
- 运用矢量控制的思想，实现有功率和无功功率的解耦控制，根据pwm整流器在两项旋转坐标下的数学模型。-Using the idea of vector control, achieving power and reactive power decoupling control, pwm rectifier based on a mathematical model in two rotating coordinates.
Power-Electronic-Converters-PWMS
- Power Electronic Converters PWM Strategies and Current Control Techniques
tutorial3
- PWM is used in all sorts of power control and converter circuits. Some common examples include motor control, DC-DC converters, DC-AC inverters and lamp dimmers. There are numerous PWM controllers available that make the use and application of PWM qu
Predictive
- Predictive direct power control (P-DPC) applied to voltage source pulse-width-modulation (PWM) rectifier was introduced in this paper. Based on the model of power prediction, voltage vectors were selected according to minimizing power errors
256-Shunt-Active-Power-Filter-under-unbalanced-ne
- This paper, focus on the study and design of a shunt active power (APF) filter for the compensation of harmonic currents and reactive power in polluted environment and under unbalanced network voltage. In APF design and control, p-q theory was often
Direct-Power-Control-of-PWM-Converter
- Direct Power Control of PWM Converter Without Power-Source Voltage Sensors
pwm-control
- 脉冲宽度调制是一种模拟控制方脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中。 - Pulse width modulation is a kind of analog control pulse width modulation is to use digital microproce
嵌入式静电消除系统在电脑横机中的应用_王国庆
- 解决横机静电的干扰，能够高效率控制静电离子产生的总量，对pwm功率驱动及功率检测做了说明(Solve the electrostatic interference of horizontal machines, and control the total amount of electrostatic ion produced by high efficiency. The power drive and power detection of PWM are explained)
PWMrectfier
- In this paper, simulation and practical implementation of direct power control is presented for a PWM Rectifier application. The proposed DPC control has several advantages, including the grid current very close to sinusoidal waveforms (TDH <1