Digital hysteresis sliding mode control for interleaved DC-DC converters

被引：11

作者：

Kanzian, Marc ^{[1
]}

Agostinelli, Matteo ^{[1
]}

Huemer, Mario ^{[2
]}

机构：

[1] Infineon Technol Austria AG, Siemensstr 2, A-9500 Villach, Austria

[2] Johannes Kepler Univ Linz, Inst Signal Proc, Altenberger Str 69, A-4040 Linz, Austria

来源：

CONTROL ENGINEERING PRACTICE | 2019年 / 90卷

关键词：

DC-DC power conversion; Digital control; Variable structure systems; Frequency control; Phase control;

D O I：

10.1016/j.conengprac.2019.07.001

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a digital constant frequency sliding mode control (SMC) law for interleaved DC-DC converters. Constant switching frequency and interleaving are achieved by dynamically adjusting the hysteresis of the control signals generating comparators. The interleaving method neither imposes constraints on the number of required phases to obtain a specific output voltage nor uses quasi-SMC. Hence, the control scheme achieves high flexibility, robustness, and performance. Furthermore, a sliding mode observer (SMO) for reconstructing the inductor currents is proposed. Experimental results for a two-phase buck converter are reported. The control concept accomplishes an improved dynamic performance in comparison with quasi-SMC.

引用

页码：148 / 159

页数：12

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