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Advanced high-frequency electronic ballasting for gas discharge lamps.

机译：用于气体放电灯的高级高频电子镇流器。

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摘要

Electronic ballasts for arc discharge lamps are becoming more and more popular because of their small size, light weight, high efficacy, longer lifetime and controllable output. However, power line quality efficiency, electromagnetic interference (EMI) and cost are issues that have to be considered when choosing a ballast.; This dissertation addresses advanced high-frequency electronic ballasting technique using a single switch to achieve a high power factor correction, zero voltage switching, and a good dimming performance. The proposed topology will be shown to achieve up to 89 percent efficiency due to the zero-voltage switching. Using the input voltage as duty cycle modulator, near 98 percent power-factor correction is attainable. Utilizing the frequency control capability of the class E converter and the frequency control technique of a resonant converter, a 10 percent dimming down capability is possible.; Size and cost reduction is achieved owing to the use of a single inductor as the storage element for the boost side and for power delivery, and a single switch for power delivery. Due to the interaction between the PFC stage and the inverter stage, extremely high bus-voltage stress may exist during the dimming operation. To reduce the bus voltage and achieve a wide-range dimming control, a novel voltage clamping method is proposed to increase the power factor correction and reduce the stress on the switching component. Experimental results show that a wide, stable dimming operation is achieved with constant switching frequency and variable duty cycle or a combination of both.
机译：电弧放电灯的电子镇流器由于其体积小，重量轻，功效高，使用寿命长和输出可控而变得越来越受欢迎。但是，选择镇流器时必须考虑电力线质量效率，电磁干扰（EMI）和成本。本文研究了利用单个开关实现高功率因数校正，零电压开关和良好的调光性能的高级高频电子镇流技术。由于采用零电压开关，建议的拓扑将显示出高达89％的效率。使用输入电压作为占空比调制器，可获得接近98％的功率因数校正。利用E类转换器的频率控制能力和谐振转换器的频率控制技术，可以实现10％的调光能力。由于使用单个电感器作为升压侧和功率传输的存储元件，以及使用单个开关进行功率传输，因此实现了尺寸和成本的降低。由于PFC级和逆变器级之间的相互作用，在调光操作期间可能会存在极高的总线电压应力。为了降低总线电压并实现宽范围的调光控制，提出了一种新颖的电压钳位方法，以增加功率因数校正并减少开关元件上的应力。实验结果表明，在恒定的开关频率和可变的占空比或两者结合的情况下，可以实现宽范围，稳定的调光操作。

著录项

  • 作者

    Moussaoui, Zaki.;

  • 作者单位

    University of Central Florida.;

  • 授予单位 University of Central Florida.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 79 p.
  • 总页数 79
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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