Tuning of passivity-preserving controllers for switched-mode power converters
Tuning of passivity-preserving controllers for switched-mode power converters
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DOI：
10.1109/tac.2004.832236
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发表时间：
2004-08
影响因子：
6.8
通讯作者：
D. Jeltsema;J. Scherpen
中科院分区：
文献类型：
--
作者：
D. Jeltsema;J. Scherpen
功率变换器的非线性无源性控制（PBC）算法已被证明是一个有趣的替代其他，主要是线性，控制技术。控制目标通常通过能量重塑过程和通过注入阻尼来修改系统的耗散结构来实现。然而，在控制器的实施过程中出现的一个关键问题是如何调整各种控制参数。从电路理论的角度来看，PBC迫使闭环动力学表现得好像有人工电阻-控制参数-串联或并联连接到真实的电路元件。在本文中，调谐问题的解决方案，提出了使用经典的布雷顿-莫泽方程。该方法是基于对一定的“混合势函数”的研究，这导致在控制参数的定量限制。这些限制似乎在稳定性、过冲和非振荡响应方面具有实际意义。该理论的例子使用基本的单开关降压和升压转换器。
Nonlinear passivity-based control (PBC) algorithms for power converters have proved to be an interesting alternative to other, mostly linear, control techniques. The control objective is usually achieved through an energy reshaping process and by injecting damping to modify the dissipation structure of the system. However, a key question that arises during the implementation of the controller is how to tune the various control parameters. From a circuit theoretic perspective, a PBC forces the closed-loop dynamics to behave as if there are artificial resistors-the control parameters-connected in series or in parallel to the real circuit elements. In this paper, a solution to the tuning problem is proposed that uses the classical Brayton-Moser equations. The method is based on the study of a certain "mixed-potential function" which results in quantitative restrictions on the control parameters. These restrictions seem to be practically relevant in terms stability, overshoot and nonoscillatory responses. The theory is exemplified using the elementary single-switch buck and boost converters.