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首页> 外文期刊>Energy Conversion & Management >Active-passive combined and closed-loop control for the thermal management of high-power LED based on a dual synthetic jet actuator
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Active-passive combined and closed-loop control for the thermal management of high-power LED based on a dual synthetic jet actuator

机译：基于双合成射流执行器的主动-被动组合和闭环控制，用于大功率LED的热管理

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摘要

In order to better solve the thermal management of high-power LED and facilitate its miniaturization, an active-passive combined heat dissipation method based on a dual synthetic jet actuator (DSJA) is proposed. Comparative analyses on heat dissipation characteristics and installation-space reductions of nine thermal management schemes are carried out, The results indicate that the temperature rapidly decreases and stabilizes once the actuator is activated. The heat dissipation effect based on DSJA is better than that based on synthetic jet actuator (SJA). The combination method with the vertical layout of DSJA makes the stable temperature of the LED and the installation space decrease 16 degrees C and 72.3% with respect to the commercial heat sink. Furthermore, a closed-loop system based on the combination method is developed to realize the autonomous control of the LED temperature within a setting temperature range. It is concluded that the operation duty cycle (ODC) reduces with the increase of the upper limit temperature, and there is an optimal impingement distance where the QDC is lowest of 29.1%. The closed-loop control will be greatly useful for the adaptive thermal management of electronic devices. (C) 2016 Elsevier Ltd. All rights reserved.
机译：为了更好地解决大功率LED的热管理问题并使其小型化，提出了一种基于双合成射流致动器（DSJA）的主动-被动组合散热方法。对9种热管理方案的散热特性和安装空间减少进行了比较分析，结果表明，执行器启动后，温度迅速下降并稳定下来。基于DSJA的散热效果优于基于合成射流执行器（SJA）的散热效果。 DSJA垂直布局的组合方法使LED的稳定温度和安装空间相对于商用散热器降低了16摄氏度和72.3％。此外，开发了一种基于组合方法的闭环系统，以实现在设定温度范围内对LED温度的自主控制。结论是，随着上限温度的升高，工作占空比（ODC）减小，并且存在最佳碰撞距离，其中QDC最低为29.1％。闭环控制对于电子设备的自适应热管理将非常有用。 （C）2016 Elsevier Ltd.保留所有权利。

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