Self-Tuning Proportional-Type Performance Recovery Property Output Voltage-Tracking Algorithm for DC-DC Boost Converter

被引:21
|
作者
Kim, Seok-Kyoon [1 ]
Ahn, Choon Ki [2 ]
机构
[1] Hanbat Natl Univ, Dept Creat Convergence Engn, Daejeon 34158, South Korea
[2] Korea Univ, Sch Elect Engn, Seoul 136701, South Korea
基金
新加坡国家研究基金会;
关键词
Boost-type dc-dc converter; disturbance observer (DOB); output voltage tracking; self-tuning algorithm; SLIDING-MODE CONTROL; CONTROLLER; DESIGN; STABILIZATION;
D O I
10.1109/TIE.2018.2849982
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 article exhibits an output voltage-tracking control algorithm incorporating a self-tuning algorithm and disturbance observers (DOBs) for dc-dc boost converters without tracking error integrators, considering model nonlinearities, parameter variations, and load uncertainties. The proposed algorithm is designed such that it forces the output voltage to track its target trajectory driven by a time-varying low-pass filter (LPF), despite model-plant mismatches. This paper makes two main contributions. First, it constructs the self-tuning algorithm by updating the closed-loop cut-off frequency in the time-varying LPF to improve the transient tracking performance. Second, it embeds first-order DOBs in the proportional-type nonlinear controller to achieve both performance recovery and the offset-free properties. The experimental verifications are carried out to illustrate the effectiveness of the closed-loop system driven by the proposed technique with a 3-kW prototype dc-dc boost converter; the 46% improvement of the tracking performance is observed, compared with the conventional feedback-linearization controller.
引用
收藏
页码:3167 / 3175
页数:9
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