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首页> 外文期刊>International journal of circuit theory and applications >Design of PID controllers using Filippov's method for stable operation of DC-DC converters
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Design of PID controllers using Filippov's method for stable operation of DC-DC converters

机译：使用Filippov方法设计PID控制器以稳定DC-DC转换器的运行

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摘要

A lot of work has taken place into the design and control of DC-DC converters, and various methodologies have been proposed. While traditionally only P or PI controllers have been employed, recent applications that require a fast transient performance impose the usage of the derivative, D, term. As it is well known, using the D-term can cause numerous problems in such converters that greatly downgrade their performance and lifetime. Having said that, in this paper, we first prove that by using the D-term, it is possible to increase the stability margin (and hence keep a low current ripple), and then, we present a novel method to tune the PID controller that guarantees a fast and stable response over a wide range of parameter values without using an unreasonably high value of the derivative gain that magnifies the presence of noise in the system. The controller is designed utilising Filippov's method, and a simple and easy to implement strategy is proposed. Furthermore, an adaptive PID controller is designed whose gains are changed depending on the value of the supply voltage or output load. Another important contribution of this work is the derivation of the saltation matrix when the switching manifold is discontinuous, the complete proof is presented, and the results validated. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：DC-DC转换器的设计和控制已经进行了许多工作，并且提出了各种方法。尽管传统上仅采用P或PI控制器，但近来需要快速瞬态性能的应用要求使用导数D项。众所周知，使用D项会在此类转换器中引起许多问题，从而大大降低其性能和使用寿命。话虽如此，在本文中，我们首先证明通过使用D项，可以增加稳定裕度（从而保持较低的电流纹波），然后，我们提出了一种新颖的方法来调节PID控制器这样可以确保在广泛的参数值范围内实现快速而稳定的响应，而不会使用不合理的高导数增益值，该值会放大系统中的噪声。该控制器是采用Filippov的方法设计的，提出了一种简单易行的策略。此外，设计了一种自适应PID控制器，其增益根据电源电压或输出负载的值而变化。这项工作的另一个重要贡献是在切换歧管不连续时推导盐析矩阵，给出了完整的证明并验证了结果。版权所有（c）2015 John Wiley＆Sons，Ltd.

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