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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
c
- 数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,-15V），程控电路。并且巧妙得反置使用D/A变换器。使程控输出电压0-9.9手动可调，步距为0.2V。并可预置电压值，采用LED同步显示。-NC DC power source circuit of the design of two modules: the source DC circuit (+15 V,+5 V,-15V), program-controlled circuit. And clever
数控直流稳压电源毕业设计
- 数控直流稳压电源+毕业设计本文将介绍一种数控直流稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。准确说就是模拟电源提供各个芯片电源、数码管、放大器所需电压；显示电路用于显示电源输出电压的大小。数控直流电流源能够很好地降低因元器件老化等原因造成的输出误差，最大输出电流2A，最高输出电压30V，电流、电压都具有步进为0.1-Numerical control dc manostat+ graduation designWith the development of
V-Ideshixianfangfa
- 数控直流电流源中V-I转换电路的实现方法的讨论-VI NC DC current source converter circuit implementation discussion
digital-voltmeter
- 数字电压表是诸多数字化仪表的核心与基础，电压表的数字化是将连续的模拟量如直流电压转换成不连续的离散的数字形式并加以显示，这有别于传统的以指针加刻度盘进行读数的方法，避免了读数的误差和视觉疲劳。目前数字万用表的内部核心部件是A/D转换器，转换器的精度很大程度上影响着数字万用表的准确度.-Digital voltmeter is the core of many digital instrument with the digital voltmeter based, is a analog quan
Tuned-statcom-for-voltage-control-a-reactive-powe
- In this paper Static Synchronous Compensator (STATCOM) is used for voltage stability and the compensation of reactive power. The STATCOM contains an Insulated Gate Bipolar Transistor (IGBT) based voltage source converter for voltage control a
AssignmentSharp5
- A battery of 100V dc is to feed an inductive load (R = 10 ohms, L = 100 mH) with a variable dc supply from 10 - 100 V by means of a step-down converter (dc chopper) operating at a fixed switching frequency of 100 Hz. The dc chopper is composed of an
A-VSC-HVDC-Fuzzy-Controller-to-Damp-Oscillation-o
- The fast control capability of the VSC-HVDC and the process of area mode oscillations are analyzed. An auxiliary fuzzy logic controller designed in Matlab for the Voltage Source Converter based HVDC transmission system, VSC-HVDC, to improve t
weijiyuanli
- 本次课程设计利用软件定时方式采用Intel 8255A可编程外设接口芯片唐都TD-PITC 实验系统上模拟直流电动机闭环调速系统，A/D转换器实现模拟信号到数字信号的转换，设置电机转速的给定值，通过PWM方式可实现电机转速的调节，LED灯显示电机转速的大小状态。-The curriculum design using software timing mode analog closed-loop DC motor speed control system on the Intel 8255A p
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
MSP430F149
- 本系统以直流电流源为核心，MSP430F149单片机为控制系统，输出数字信号，经过D/A转换器（TLV5638）输出模拟量，将实际值输出到单片机，由单片机进行比较调整，控制电流输出-This system DC current source to the core, MSP430F149 microcontroller for the control system, the output digital signal through D/A converter (TLV5638) analog
first2345
- CONTROL OF DC MOTOR USING BUCK BOOST CONVERTER
ad
- 功能：STC12C2052AD AD转换C程序 +PWM输出功能 成功使用。 应用：AD检测电压进行过欠压保护（继电器控制）+PWM把直流电压斩波成脉动直流。 -Function: STC12C2052AD AD converter output C program+PWM used successfully. Applications: AD detection voltage over-voltage protection (relay control)+PWM the DC
power_switching_power_supply
- Synchronous Buck Converter: This switched power supply converts a 30V DC supply into a regulated 15V DC supply. The model can be used to both size the inductance L and smoothing capacitor C, as well as to design the feedback controller. By selecting
ads8688-chinese
- ADS8684 和 ADS8688 分别为 4 通道和 8 通道集成数据采集系统，它们基于 16 位逐次逼近 (SAR) 模数转换器 (ADC)，工作时的吞吐量可达 500kSPS。 这些器件提供了用于各输入通道的集成模拟前端电路（过压保护高达 ±20V）、支持自动和手动两种扫描模式的 4 通道或 8 通道多路复用器、以及低温度漂移的片上 4.096V 基准电压。 采用 5V 单模拟电源供电时，器件上的各输入通道均可支持 ±10.24V、 ±5.12V 和 ±2.56V 的实际双极输入范
buck-and-a-full-bridge-converters
- It is a simulation project implementation of a buck converter connected to eighty ohm load which bucks or steps down the input voltage to obtain a lower voltage for the load. the second simulation is a full bridge converter which consists of two legs
JSWTTCDWQ
- 本设计是以TI公司的MSP430G2553和LDC1000芯片为核心设计的一个金属物体探测定位器。采用MSP430G2553单片机作为系统控制处理器，LDC1000电感/数字转换器评估板作为金属物体探头对硬币及铁环进行探测，当检测到硬币或铁环时单片机通过反馈信息控制小车不动而实现定位。同时，运用PWM直流电机调速技术，完成对小车运动速度和运动方向的控制，并用蜂鸣器和发光二极管进行声-光显示是否探测到硬币或铁环。整机使用单电源同时对电机部分、芯片部分、显示部分进行供电。-The design is
Analysis-of-HVDC-converters
- 本文基于宁东直流输电工程的实际设备的数据,在PSCAD/EMTDC中建立了包含换流器、换流变压器、直流滤波器、交流滤波器和无功补偿设备、平波电抗器以及直流输电线路的模型,并按照CIGRE直流输电系统基准模型的典型控制方式,建立了初步的直流输电三级控制结构,并分析了控制逻辑中PI环节参数的选择问题：基于BPA仿真模型中的元件模型与参数,在PSCAD/EMTDC中建立了山东电网500kV动态等值之后的交流系统模型,包括发电机、励磁机、调速器、电力系统稳定器、变压器、负荷以及输电线路等设备的模型,利用
CERN-THESIS-2013-274
- A feature of this topology is the significant second harmonic component of the current that circulates among the phase legs and mainly increases the losses. Secondly, the sizing process for the module capacitance and the arm inductance is describ
MULTIPULSE-CONVERTERS
- This paper discusses the impact of using 3-phase and multipules converter circuit commonly found in unity power factor at input AC mains and regulates output voltage.3-phase thyristor rectifiers have been used in industries for obtaining a variable