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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
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详细讲述交直流调速在MATLAB之中的仿真模型绘制,并配有细致入微的参数设置!具体详实!-Detailed account of the AC and DC speed control in the MATLAB simulation model among the draw, and with attention to detail parameter setting! Specific and detailed!
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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
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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
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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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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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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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Abstract. The paper presents a squirrel-cage induction machine operating as a generator principally designed for use in small wind and
hydroelectric power stations. The main advantages of such a generator are its high reliability, low price and cos
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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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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
fo
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In this paper it is presented a detailed descr iption
of the analog implementation of the control for a DC-AC
converter composed by a DC-DC Zeta converter and a low
frequency inverter. Using only analog components, it was
developed the MPPT t
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逆变器(inverter,又称变流器、反流器,或称反用换流器、电压转换器)是一个利用高频电桥电路将直流电变换成交流电的电子器件,其目的与整流器相反。可将12V或24V的直流电转换成230V、50Hz交流电或其它类型的交流电。它由逆变桥、控制逻辑和滤波电路组成。(Inverter (also known as converter, inverter, or inverter inverter, voltage converter) is a high-frequency bridge circui
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Converter and Inverter are devices that convert the current from AC to DC and vice versa.
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