| 基于PWM技术的功率负荷模拟器 |
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| 引用本文： | 张炳达,姚剑锋.基于PWM技术的功率负荷模拟器[J].电力电子技术,2006,40(4):111-113. |
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| 作者姓名： | 张炳达 姚剑锋 |
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| 作者单位： | 天津大学,天津,300072 |
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| 摘 要： | 功率负荷模拟器是电力系统动态模拟实验室不可缺少的设备之一。本文运用PWM电压型变流器的基本原理,设计了一种分离控制式交-直-交功率负荷模拟器。交-直控制部分仅负责对功率负荷伏安特性的模拟,负责把功率负荷模拟器内部的直流电压稳定地交给直-交控制部分去完成。同时,为提高功率负荷模拟器的回馈效率,对回馈电流实行单位功率因数控制。试验结果表明,该功率负荷模拟器既能准确模拟功率负荷的伏安特性,又能向外部电网回馈高质量的电能。
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| 关 键 词： | 变流器 脉宽调制 模拟器 伏安特性 电能回馈 |
| 文章编号： | 1000-100X(2006)04-0111-03 |
| 收稿时间： | 09 27 2005 12:00AM |
| 修稿时间： | 2005年9月27日 |
Power Load Simulator based on PWM |
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| ZHANG Bing-da,YAO Jian-feng.Power Load Simulator based on PWM[J].Power Electronics,2006,40(4):111-113. |
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| Authors: | ZHANG Bing-da YAO Jian-feng |
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| Affiliation: | Tianjin University, Tianjin 300072, China |
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| Abstract: | Power load simulator is one of the necessary equipments in the dynamic model laboratory of power system.A separate-controlled AC-DC-AC power load simulator is designed adopting the principle of voltage-type PWM convertor.While the Volt-Ampere characteristics of power load are simulated by the AC/DC part,the stability control for the DC volt-age in the simulator is accomplished by the DC/AC part.Meanwhile,in order to improve the feed-back efficiency of the simulator,unit power factor control is applied in the feed-back current.The results showed that not only the exact Volt-Ampere characteristics of power load is simulated by the power load simulator,but also the high quality feedback electric power to the external power system is supplied. |
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| Keywords: | convertor PWM simulator Volt-Ampere characteristics electric power feedback |
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