Modified flyback for HID supply: Design, modeling and control

D. Pappis, A. Schittler, J. R. Pause, M. Costa, A. Campos, José Marcos Alonso Alvarez
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引用次数: 2

Abstract

This paper presents a ballast for driving high intensity discharge (HID) lamps with low frequency square waveform from a dc supply, with expansion for integrated PFC (buck-boost converter). From the dc source (battery or PFC rail), a flyback arrangement is inserted into a switching structure whose output provides low frequency voltage yet avoiding instability issues. Proposal's main advantage is the need for reduced chokes count and two active switches only. Converter design for DCM is presented in this work, besides an equivalent circuit from a control point of view. Small signal ac model is obtained and feedback control loop designed based upon frequency response. HID dynamics is inserted into converter model, with feedback directly implemented. For design conformity, experimental and simulation results from Matlab and PSIM are presented, as well as discussions about its feasibility.
改进的HID电源反激:设计,建模和控制
本文介绍了一种用于驱动低频方波高强度放电(HID)灯的直流电源镇流器,并对集成PFC(降压-升压转换器)进行了扩展。从直流电源(电池或PFC导轨),一个反激装置插入到开关结构中,其输出提供低频电压,但避免不稳定问题。该方案的主要优点是只需要减少扼流圈数和两个有源开关。本文从控制的角度给出了DCM的变换器设计,以及等效电路的设计。建立了小信号交流模型,并根据频率响应设计了反馈控制回路。将HID动态插入到转换器模型中,并直接实现反馈。为了保证设计的一致性,给出了Matlab和PSIM的实验和仿真结果,并对其可行性进行了讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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