Improved Time Optimal Control of a Buck Converter Based on Capacitor Current

被引：74

作者：

Kapat, Santanu ^{[1
]}

Krein, Philip T. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Kharagpur 721302, W Bengal, India

[2] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2012年 / 27卷 / 03期

关键词：

Buck converter; capacitor current; characteristic impedance; hybrid control; time optimal control (TOC); DC-DC CONVERTERS; 2ND-ORDER SWITCHING SURFACES; OPTIMAL DIGITAL-CONTROL; BOUNDARY CONTROL; ORDER; MODE;

D O I：

10.1109/TPEL.2011.2163419

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Time optimal control (TOC) is a technique to provide fast transient recovery in dc-dc converters. Prior published approaches are incomplete in the formulation of TOC because they ignore voltage-deviation effects on inductor-current and load-current dynamics during a large-signal recovery. An accurate TOC algorithm based on capacitor current is presented. This method achieves minimum transient recovery time for load transients and tracking in a buck converter. The minimum recovery time is preserved even with a transient-detection delay. This control configuration ensures large-signal stability in a sense similar to that of sliding-mode control. The results are demonstrated in an experimental buck converter that uses a digital control algorithm.

引用

页码：1444 / 1454

页数：11

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