Precise regulation of multiple output voltages in a dc-dc converter

1980 IEEE Power Electronics Specialists Conference Pub Date : 1980-06-16 DOI:10.1109/PESC.1980.7089459

H. Matsuo, F. Kurokawa

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引用次数: 18

Abstract

A new dc-dc converter is presented to perform the precise regulation of multiple output voltages, which is composed of the cascade connection circuit of the improved forward type multiple-output converter and the step-down type single-output converters. In the conventional multiple-output converter using cross regulation, the steady-state errors in the cross regulated outputs cannot be made smaller than some values for the change of the load even if the proportional gain of the feedback controller is increased. Also, in the multiple-output converters with additional switches, which are connected in series with the diode rectifiers in each cross regulated output unit, it is difficult to perform the precise regulation of multiple outputs for the large change of each load. On the other hand, by the method presented here, the satisfactory regulation performance can be achieved easily for the conditions of no load to full load. The steady-state and the dynamic characteristics are clarified through the equivalent circuits, and also it is demonstrated experimentally that this converter has a sufficiently high conversion efficiency.

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在直流-直流变换器中精确调节多个输出电压

提出了一种新的dc-dc变换器，该变换器由改进的正演型多输出变换器和降压型单输出变换器的级联连接电路组成，可实现多个输出电压的精确调节。在传统的交叉调节多输出变换器中，即使增加反馈控制器的比例增益，也不能使交叉调节输出的稳态误差小于负载变化的某一值。此外，在带有附加开关的多输出变换器中，每个交叉调节输出单元中与二极管整流器串联，很难对每个负载的大变化进行多输出的精确调节。另一方面，本文提出的方法在空载至满负荷工况下，可以很容易地获得令人满意的调节性能。通过等效电路阐明了该变换器的稳态和动态特性，并通过实验证明了该变换器具有足够高的转换效率。

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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1980 IEEE Power Electronics Specialists Conference

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