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交流电压测量 该程序已在模板上调试通过，可作读者的参考。有关显示部分请读者参考本书相关章节，有关A/D转换的详细设置请参考前面章节。-AC voltage measurement procedure has been through debugging on the template for the reader' s reference. For display part of the reader is referred to the relevant chapters of this
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Independent control of active and reactive power without any needs for extra
compensating equipment.
With PWM, VSC-HVDC o® ers the possibility to control both active and reactive
power independently . While the transmitted active power is k
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Study of output voltages of a matrix converter feeding an five AC - induction Machine
Using the strategy PWM modulation to five intervals
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Advantage ofconverter_based_facts -controller.
This paper presents the switching-converter-based approach to
Flexible AC Transmission Systems from an application viewpoint. It
is shown that this approach, apart from providing superior performan
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A frequency changer or frequency converter is an electronic device that converts alternating current (AC) of one frequency to alternating current of another frequency. The device may also change the voltage, but if it does, that is incidental to its
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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
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A static synchronous compensator (STATCOM), also known as a "static synchronous condenser" ("STATCON"), is a regulating device used on alternating current electricity transmission networks. It is based on a power electronics voltage-source converter
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During the past decade, Wind energy have attracted interest as a result of the increasing concern about CO2 emissions. The doubly fed induction generators (DFIGs)have been widely used in modern wind energy systems, due
to the advantages of variable
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多电平变换器是近年来电力电子领域中高压大功率应用场合研究的一个
热点，这种变换器用容量小的器件输出高容量、高质量的电能，因此在中高压变
频调速、交流柔性输电系统等场合得到了广泛的关注。-Multi-level converter is a hot field of power electronics in recent years, research in high-voltage power applications, this converter output high-capaci
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本软件实现光伏电池出来的低压直流电逆变成高压工频交流电，顺利把太阳能转换成的电能馈送到电网。本软件的主要功能大概分为五部分：1)配置MCU处理器的PWM模块（脉宽调制信号）为互补工作模式使两个反激变换器交替工作，实现交错反激工作模式；2)根据电网周期，在合适的时刻本软件驱动硬件电路，实现逆变，把直流电转换为50Hz、220V交流电；3)本软件具有无线监控功能，通过无线模块监测逆变器工作状态；4)本软件有串口调试功能，可以方便调试程序5)本软件有输出电压超压保护，输出电流过流保护，频率保护-The
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本单相正弦波逆变电源的设计，以12V蓄电池作为输入，输出为36V、50Hz的标准正弦波交流电。该电源采用推挽升压和全桥逆变两级变换，在控制电路上，前级推挽升压电路采用SG3525芯片控制，闭环反馈；逆变部分采用驱动芯片IR2110进行全桥逆变，采用U3990F6完成SPWM的调制，后级输出采用电流互感器进行采样反馈，形成双重反馈环节，增加了电源的稳定性；在保护上，具有输出过载、短路保护、过流保护、空载保护等多重保护功能电路，增强了该电源的可靠性和安全性；输出交流电压通过AD637的真有效值转换后
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Power conditioners for low-voltage DC sources in
Distributed Generation usually have two major functions: to
boost the energy source output voltage and to convert it into an
AC voltage. The voltage boost is usually done by a DC-DC
converter.
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该SIMULINK模型为并联无源滤波器，1）消除电网谐波，2）提供无功功率-
In HVDC installations, AC harmonic shunt filters are used to:
1) reduce harmonic voltages and currents in the power system,
2) supply the reactive power consumed by the converter. To illustrate th
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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
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The Modular multilevel converter has become an attractive option for dc/ac conversion in many
power system applications in particular for HVDC transmission, due to its parallel arrangement of
phase legs the MMC is known to be wye configured archi
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The Modular multilevel converter has become an attractive option for dc/ac conversion in many
power system applications in particular for HVDC transmission, due to its parallel arrangement of
phase legs the MMC is known to be wye configured archi
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EG8010 is a digital pure sine wave inverter ASIC (Application Specific Integrated Circuit) with
complete function of built-in dead time control. It applies to DC-DC-AC two stage power converter
system or DC-AC single stage low power frequency tra
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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
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基于AVR单片机的电力谐波分析系统本设计采用ATMEL公司的ATmega32L单片机完成一个电能质量检测系统。电压信号经过变压器隔离降压，幅值较低的交流信号再通过运算放大器构成的加法器变成可供A/D转换电路转换的直流信号。单片机使用内部的定时器每1/3200秒对电压信号采样一次，用片内自带的10位精度A/D转换器对每周波的电压信号采样64个点后，进行FFT运算，FFT的运算过程采取查表法进一步提高运算速度，分析出小于21次的各次谐波的含量，并计算出电压信号的有效值(RMS)，将谐波分析结果通过R
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In the paper, the design, realization and performance
uation of a single-phase 3kW DC/AC power converter, using
an active bridge DC/DC converter and a Full Bridge DC/AC is
introduced, presenting a novel solution on the industrial scenario
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