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Purpose

  • Electricity+Markets+Theories

    Why did an electricity market emerge? How does it really work? What are the perfor- mance measures that we can use to tell that the electricity market under consideration is well functioning? These are the questions that will be explored in this book. The main Purpose of this book is to introduce the fundamental theories and concepts that underpintheelectricitymarketswhicharebasedonthreemajordisciplines:electrical power engineering, economics, and optimization methods.

    标签: Electricity Theories Markets

    上传时间: 2020-06-07

    上传用户:shancjb

  • Field_Geophysics

    The Purpose of this book is to help anyone involved in small-scale geophys- ical surveys. It is not a textbook in the traditional sense, in that it is designed for use in the field and concerns itself with practical matters – with the- ory taking second place. Where theory determines field practice, it is stated, not developed or justified. For example, no attempt is made to explain why four-electrode resistivity works where two-electrode surveys do not.

    标签: Field_Geophysics

    上传时间: 2020-06-09

    上传用户:shancjb

  • Fundamentals_of_Global_Positioning_System1

    The Purpose of this book is to present detailed fundamental information on a global positioning system (GPS) receiver. Although GPS receivers are popu- larly used in every-day life, their operation principles cannot be easily found in one book. Most other types of receivers process the input signals to obtain the necessary information easily, such as in amplitude modulation (AM) and frequency modulation (FM) radios. In a GPS receiver the signal is processed to obtain the required information, which in turn is used to calculate the user position. Therefore, at least two areas of discipline, receiver technology and navigation scheme, are employed in a GPS receiver. This book covers both areas.

    标签: Fundamentals_of_Global_Positionin g_System_Receivers

    上传时间: 2020-06-09

    上传用户:shancjb

  • Introduction to the Mathematical Theory 1

    The Purpose of this preface is twofold. Firstly, to give an informal historical introduction to the subject area of this book, Systems and Control, and secondly, to explain the philosophy of the approach to this subject taken in this book and to outline the topics that will be covered.

    标签: Introduction Mathematical Theory the to

    上传时间: 2020-06-10

    上传用户:shancjb

  • Machine learning

    Machine learning is about designing algorithms that automatically extract valuable information from data. The emphasis here is on “automatic”, i.e., machine learning is concerned about general-Purpose methodologies that can be applied to many datasets, while producing something that is mean- ingful. There are three concepts that are at the core of machine learning: data, a model, and learning.

    标签: learning Machine

    上传时间: 2020-06-10

    上传用户:shancjb

  • 基于TMS320F2812 光伏并网发电模拟装置PROTEL设计原理图+PCB+软件源码+WORD论

    基于TMS320F2812 光伏并网发电模拟装置PROTEL设计原理图+PCB+软件源码+WORD论文文档,硬件采用2层板设计,PROTEL99SE 设计的工程文件,包括完整的原理图和PCB文件,可以做为你的学习设计参考。 摘要:本文实现了一个基于TMS320F2812 DSP芯片的光伏并网发电模拟装置,采用直流稳压源和滑动变阻器来模拟光伏电池。通过TMS320F2812 DSP芯片ADC模块实时采样模拟电网电压的正弦参考信号、光伏电池输出电压、负载电压电流反馈信号等。经过数据处理后,用PWM模块产生实时的SPWM 波,控制MOSFET逆变全桥输出正弦波。本文用PI控制算法实现了输出信号对给定模拟电网电压的正弦参考信号的频率和相位跟踪,用恒定电压法实现了光伏电池最大功率点跟踪(MPPT),从而达到模拟并网的效果。另外本装置还实现了光伏电池输出欠压、负载过流保护功能以及光伏电池输出欠压、过流保护自恢复功能、声光报警功能、孤岛效应的检测、保护与自恢复功能。系统测试结果表明本设计完全满定设计要求。关键词:光伏并网,MPPT,DSP  Photovoltaic Grid-connected generation simulator Zhangyuxin,Tantiancheng,Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the Purpose of grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual alarm, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected,MPPT,DSP 目录引言 11. 方案论证 11.1. 总体介绍 11.2. 光伏电池模拟装置 11.3. DC-AC逆变桥 11.4. MOSFET驱动电路方案 21.5. 逆变电路的变频控制方案 22. 理论分析与计算 22.1. SPWM产生 22.1.1. 规则采样法 22.1.2. SPWM 脉冲的计算公式 32.1.3. SPWM 脉冲计算公式中的参数计算 32.1.4. TMS320F2812 DSP控制器的事件管理单元 42.1.5. 软件设计方法 62.2. MPPT的控制方法与参数计算 72.3. 同频、同相的控制方法和参数计算 8

    标签: tms320f2812 光伏 并网发电 模拟 protel pcb

    上传时间: 2021-11-02

    上传用户:

  • 74HC595 A4950 MAX3232 ULN2003AD STM32F207VCT6 AD集成封装库

    74HC595 A4950 MAX3232 ULN2003AD  STM32F207VCT6 AD集成封装库,原理图库器件型号列表:Library Component Count : 53Name                Description----------------------------------------------------------------------------------------------------1N4148              High Conductance Fast Diode1N4448              High Conductance Fast Diode1N914               High Conductance Fast Diode1N914A              High Conductance Fast Diode1N914B              High Conductance Fast Diode1N916               High Conductance Fast Diode1N916A              High Conductance Fast Diode1N916B              High Conductance Fast Diode2N3904              NPN General Purpose Amplifier74ALS86             74HC595             8M贴片晶振          A4950               直流电机驱动AO4805CAP                 CapacitorCAP SMD             CapacitorCON2                ConnectorCON2*10             ConnectorCON2*12P            ConnectorCON2*7              ConnectorCON2*9              ConnectorCON3                ConnectorCON4                ConnectorCON5                ConnectorCON7                ConnectorCap Pol             极性电解电容DIODE               DiodeFUSE1               FuseFUSE2               FuseINDUCTOR2           IRF7351PbF          N-MOSJS1-12V-FLED                 MAX487              MAX809RD            R0.125              Less than 1/4 Watt Power Resistor.RES2                RGRPI*4               Res1                ResistorSGM8955XN5G/TR      测量放大器SM712               SN74LV4052AD        SP3232ESST25VF016B-50-4I-S2AFI2C Real-Time Clock.STM32F107VTC6       STM32F107VTC6SW DIP-4            编码开关SW-PB               SwitchTPS54302            45UA静态电流 3ATVS                 SMBJ30CAULN2003             XC6214XTAL                Crystal OscillatorPCB封装库列表:Component Count : 40Component Name-----------------------------------------------4G模块-外置7D181K0603-LED0603C0603R0805C12061210181232255569-2*1P直针5569-2*2P直针AT-26CAP-D8DO-214AANHSOP-8J-SPDT-5JTAGL

    标签: 74hc595 a4950 stm32

    上传时间: 2021-11-15

    上传用户:ttalli

  • 基于NE555设计的声音传感器模块ALTIUM硬件原理图+PCB文件

    基于NE555设计的声音传感器模块ALTIUM硬件原理图+PCB文件,2层板设计,大小为29x30mm,Altium Designer 设计的工程文件,包括原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 8Name                Description----------------------------------------------------------------------------------------------------2N3904              NPN General Purpose AmplifierCap                 CapacitorComponent_1_1       Header 3H           Header, 3-Pin, Right AngleLED3                Typical BLUE SiC LEDMKF                 麦克风Res                 电阻Res2                Resistor

    标签: ne555 声音传感器

    上传时间: 2021-11-17

    上传用户:

  • AC220V转DC(12V15W )电源板AD设计硬件原理图+PCB文件 2层板设计 大小为100

    AC220V转DC(12V15W )电源板AD设计硬件原理图+PCB文件,2层板设计,大小为100*55mm,   ALTIUM设计的原理图+PCB文件,可以做为你的学习设计参考。主要器件型号如下:Library Component Count : 24Name                Description----------------------------------------------------------------------------------------------------2N3904              NPN General Purpose Amplifier2N3906              PNP General Purpose AmplifierBRIDGE1             Diode BridgeCON2                ConnectorCap                 CapacitorCap Pol1            Polarized Capacitor (Radial)D Zener             Zener DiodeDIODE               Diode 1N914         High Conductance Fast DiodeECELECTRO2            Electrolytic CapacitorFP103               FUSE-HHeader 2            Header, 2-PinINDUCTOR2           NMOS-2              N-Channel Power MOSFETPC837               OptoisolatorRES2-B              Res Varistor        Varistor (Voltage-Sensitive Resistor)T                   TR-2B               TRANS1UCC28051            Volt Reg            Voltage Regulator

    标签: 电源 pcb

    上传时间: 2021-11-21

    上传用户:kent

  • xinlinx-Spartan6开发板原理图详解

    The information disclosed to you hereunder (the Materials ) is provided solely for the selection and use of Xilinx products. To the maximum extent permitted by applicable law: (1) Materials are made available"AS IS"and with all faults, Xilinx hereby DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS, IMPLIED, OR ST ATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR Purpose; and (2) Xilinx shall not be liable (whether in contract or tort. includina nealigence. or under anv other theorv of liabilitv) for any loss or damage of any kind or nature related to, arising under, or in connection with, the Materials (including vour use of the Materials), including for any direct, indirect, special, incidental, or consequential loss or damage (including loss of data, profits, qoodwill, or any type of loss or damage suffered as a result of anv action brought by a third party) 

    标签: xinlinx spartan-6

    上传时间: 2022-06-18

    上传用户: