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首页> 外文期刊>Power Electronics, IET >Constant on time controlled zero voltage switching electronic ballast with power quality improvement
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Constant on time controlled zero voltage switching electronic ballast with power quality improvement

机译：恒定导通时间控制的零电压开关电子镇流器，改善了电能质量

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摘要

This study deals with the design, modelling and implementation of unity power factor (UPF) boundary conduction mode (BCM)-based electronic ballast for a T8, 36 W fluorescent lamp. In low power applications, BCM-based boost converter is widely used because of the low inductor value, however, because of zero crossover distortion, achieving a total harmonic distortion of <10% is difficult for universal AC mains. In proposed electronic ballast, UPF has been achieved at universal AC mains by using a boost power factor corrected converter operating in BCM with constant on time control. The achieved constant DC-link voltage is converted into high frequency AC voltage using a quasi-half bridge series resonant inverter to initiate the discharge and also to drive the fluorescent lamp with constant current. The modelling and simulation of the proposed topology have been performed using sim power system tool-boxes in MATLAB-Simulink environment. The switching losses have been reduced by achieving zero voltage switching at an operating switching frequency of 46 kHz. Different evaluated parameters have been found as per the international standard IEC61000-3-2 of class C regulations.
机译：本研究针对T8、36 W荧光灯的基于单位功率因数（UPF）边界传导模式（BCM）的电子镇流器的设计，建模和实现。在低功率应用中，基于BCM的升压转换器由于电感值低而被广泛使用，但是，由于零交叉失真，对于通用交流电源来说，要实现小于10％的总谐波失真是困难的。在建议的电子镇流器中，通过使用在BCM中运行且具有恒定导通时间控制的升压功率因数校正转换器，已在通用交流电源上实现了UPF。使用准半桥串联谐振逆变器将获得的恒定直流母线电压转换为高频交流电压，以启动放电并以恒定电流驱动荧光灯。在MATLAB-Simulink环境中，使用sim power系统工具箱对提出的拓扑进行了建模和仿真。通过以46 kHz的工作开关频率实现零电压开关，可以降低开关损耗。根据C类规定的国际标准IEC61000-3-2，发现了不同的评估参数。

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