用于大功率HID灯供电的交错降压变换器:设计、建模和控制

A. Schittler, D. Pappis, A. Campos, M. Costa, José Marcos Alonso Alvarez
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引用次数: 8

摘要

随着功率变换器输出电流水平的提高,交错拓扑结构得到了广泛的应用。交错降压变换器(IBC)是一种众所周知的拓扑结构,其主要特征是低纹波输出电流源行为。由于HID灯的电压源特性及其声共振问题,需要用方波形状的近恒流驱动。因此,buck交错转换器对于提供高功率HID灯是有利的。本文的目标是提出一种基于双单元buck交错变换器的高功率HID灯电子镇流器,具有电流控制回路,电压传感和恒功率。建立了基于平均状态空间技术的直流模型和基于小信号扰动的交流模型。在Matlab/Simulink和PSIM软件中对实验结果进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Interleaved buck converter applied to high power HID lamps supplying: Design, modeling and control
As the output current levels of power converters increases, interleaved topologies become widely used. A well-known topology is the interleaved buck converter (IBC), which presents as main characteristic a low ripple output current source behavior. Due to HID lamp voltage source characteristics and their acoustic resonance issue, it is necessary to drive them with nearly constant current with a square-wave shape. Therefore, a buck-interleaved converter can be advantageous for supplying high power HID lamps. The goal of this paper is a proposal of an electronic ballast based on a two-cell buck-interleaved converter for high power HID lamps, with current control loop, voltage sensing and constant power. A DC model based on averaged state-space technique is derived for the ballast, as well as an AC model based on small-signal disturbances. The results are verified experimentally and through simulation in Matlab/Simulink and PSIM softwares.
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