Digital power-factor correction for a capacitor-charging power supply
Digital power-factor correction for a capacitor-charging power supply
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DOI：
10.1109/tie.2002.803240
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发表时间：
2002-11
期刊：
影响因子：
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通讯作者：
R. L. Newsom;W. Dillard;R. Nelms
中科院分区：
文献类型：
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作者：
R. L. Newsom;W. Dillard;R. Nelms
介绍了一种低功耗、低成本、能用120V交流电源对储能电容器充电并能进行功率因数校正(PFC)的电源的设计和结构。通常连接到电容器充电电源(CCPS)的负载是脉冲功率负载(即，激光器、心脏除颤器或闪光灯)。CCPS中加入了反激式转换器，因为它能够在保持高功率因数的同时为电容器充电。CCPS的控制系统采用峰值电流控制来实现功率因数校正，并使用标准的“现成”数字逻辑元件实现。已经建造了一台300V的样机并进行了测试。实验结果表明，采用反激变流器和数字逻辑控制系统的CCPS具有较高的功率因数。
The design and construction of a low-power low-cost power supply capable of charging an energy storage capacitor from a 120-V AC source and capable of power-factor correction (PFC) is presented. The load that is generally connected to a capacitor-charging power supply (CCPS) is a pulsed power load (i.e., laser, cardiac defibrillator, or flash lamp). A flyback converter was incorporated into the CCPS because it is capable of charging a capacitor while maintaining a high power factor. The control system of the CCPS uses peak current control to achieve PFC and is implemented using standard "off-the-shelf" digital logic components. A 300-V prototype has been constructed and tested. The experimental results show that a high power factor is obtained by the CCPS utilizing a flyback converter and the digital logic control system.