A -50 V/100 Amp high frequency switch mode rectifier unit and its application to digital switching system

Conference Proceedings., Eleventh International Telecommunications Energy Conference Pub Date : 1989-10-15 DOI:10.1109/INTLEC.1989.88279

Simon S. Woo, Y.S. Sun, H.M. Lee

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引用次数: 1

Abstract

The authors describe the development of a 20 kW off-line switch mode rectifier system to power a large-capacity digital switching system which is under development. The rectifier unit uses a double forward circuit topology composed of four power MOSFET modules that are controlled by pulse width modulation; this makes it possible to reduce the size and weight of magnetic components. The unit is convection-cooled and uses isolated power modules mounted on one end of a heat-pipe-type heatsink. A well-designed heatsink along with a careful choice of parts and components yields an overall efficiency of typically 90%. Four rectifier units are housed in a rack cabinet, together with a total control unit which includes distribution, protection, control, and alarm functions. This rack cabinet can be paralleled in modular fashion to any required power level, and installed along with the digital switching system in a switch room. This eliminates the need for separate power rooms and distribution busbar layouts.<>

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一种-50 V/100安培高频开关整流器及其在数字开关系统中的应用

本文介绍了一种20kw的离线开关整流器系统，为正在开发的大容量数字开关系统供电。整流单元采用由脉冲宽度调制控制的四个功率MOSFET模块组成的双正向电路拓扑;这使得减小磁性元件的尺寸和重量成为可能。该机组对流冷却，并使用隔离的电源模块安装在热管式散热器的一端。精心设计的散热器以及精心选择的部件和组件通常可产生90%的整体效率。四个整流器单元安装在一个机架柜中，连同一个总控制单元，包括配电、保护、控制和报警功能。该机架柜可以以模块化方式并联到任何所需的功率水平，并与数字交换系统一起安装在配电室中。这样就不需要单独的电力室和配电母线布局

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Conference Proceedings., Eleventh International Telecommunications Energy Conference

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