| 引用本文: | 李 宋,叶满园,袁义生.单相UPS的单开关AC-DC／DC-DC变换电路[J].电力自动化设备,2011,31(7): |
| LI Song,YE Manyuan,YUAN Yisheng.Mono-switch AC-DC／DC-DC converter for single-phase UPS[J].Electric Power Automation Equipment,2011,31(7): |
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| 摘要: |
| 介绍了一种应用在单相UPS系统中的新型单开关AC-DC／DC-DC变换电路，该电路由1个功率开关器件和6个二极管组成，能够实现AC／DC整流和DC／DC升压2种功能。在详细分析了该电路运行模式及工作原理的基础上，采用了单周期非线性控制理论对其进行控制，利于2个低速PI调节器对直流母线上的2个电容器电压进行控制，1个高速PI调节器对输入电流进行控制。仿真结果表明，该电路简单可靠，输入功率因数高，电流谐波失真小，可以获得稳定的正负直流母线电压。 |
| 关键词: 功率因数校正 不间断电源 计算机仿真 变换器 电路拓扑 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（51067004）；江西省教育厅科技项目（GJJ09147） |
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| Mono-switch AC-DC／DC-DC converter for single-phase UPS |
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LI Song, YE Manyuan, YUAN Yisheng
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School of Electrical Engineering，East China Jiaotong University，Nanchang 330013，China
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| Abstract: |
| A mono-switch AC-DC／DC-DC converter used in single-phase UPS system is introduced，which consists of one power switch and six diodes. As both AC-DC rectifier and DC-DC booster，its operating modes and working principle are detailed. The single-cycle nonlinear control is adopted，which applies two low-speed PI regulators to control the voltage of two capacitors on DC link and a high-speed PI regulator to control the input current. Simulative results prove that，being simple and reliable，it outputs stable DC bus voltage with high input power factor and low THD. |
| Key words: electric power factor correction uninterrupted power supply computer simulation electric converters electric network topology |
