Smart voltage reduction

Bob McFetridge
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Abstract

Over the years, voltage reduction has been implemented using different techniques. In the early days, a summing transformer was added to the sense voltage input on the LTC/regulator control. There are many disadvantages to this system-among them being the need for follow-up commands to exit voltage reduction and hardware changes if voltage reduction needed to be implemented. This paper explains a smart voltage reduction algorithm that will allow for the maximum percentage of reduction without the need of reducing the bandwidth or requiring multiple levels to be entered. The simple steps of disabling band edges and applying reactive compensation in the correct direction can both increase the amount of reduction and also allow the system to return to normal quicker when exiting reduction. With the newer digital controls, voltage reduction can now be performed without the need for external transformers, and three levels of voltage reduction-typically between 1–10%-can be implemented via software. This allows the user the ability to remotely change the percentage of reduction without changing any hardware, a major benefit. A second major benefit is in response time. A third benefit is that there is verification that the control is in reduction mode. This paper provides an overview of this Smart Voltage Reduction system and these benefits.
智能电压降低
多年来,已经使用不同的技术实现了电压降低。在早期,在LTC/稳压器控制的感测电压输入中添加了一个求和变压器。该系统有许多缺点,其中包括需要后续命令来退出电压降低,如果需要实现电压降低,则需要更改硬件。本文解释了一种智能电压降低算法,该算法将允许在不需要减少带宽或需要输入多个电平的情况下实现最大百分比的降低。在正确的方向上禁用带边和应用无功补偿的简单步骤既可以增加减少的量,也可以使系统在退出减少时更快地恢复正常。使用较新的数字控制,现在可以在不需要外部变压器的情况下进行电压降低,并且可以通过软件实现三个级别的电压降低-通常在1 - 10%之间。这使用户能够远程更改减少的百分比,而无需更改任何硬件,这是一个主要的好处。第二个主要的好处是响应时间。第三个好处是可以验证控制是否处于减少模式。本文概述了这种智能电压降低系统及其优点。
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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