An Adaptive Sliding-Mode Control Strategy for Hybrid Power Sources of Battery-Supercapacitor with a Boost Converter

doi:10.7652/xjtuxb201610006

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An Adaptive Sliding-Mode Control Strategy for Hybrid Power Sources of Battery-Supercapacitor with a Boost Converter

更新时间：2025-07-09

- An Adaptive Sliding-Mode Control Strategy for Hybrid Power Sources of Battery-Supercapacitor with a Boost Converter
- Vol. 50, Issue 10, Pages: 36-41(2016)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201610006
  CLC： TM46;TP13
- Online First：10 October 2016，
  
  Published：2016
- 稿件说明：
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An Adaptive Sliding-Mode Control Strategy for Hybrid Power Sources of Battery-Supercapacitor with a Boost Converter[J]. 2016, 50(10): 36-41.
DOI：

An Adaptive Sliding-Mode Control Strategy for Hybrid Power Sources of Battery-Supercapacitor with a Boost Converter[J]. 2016, 50(10): 36-41. DOI： 10.7652/xjtuxb201610006.

摘要

针对升压型电池-超级电容复合电源的输出端超级电容电压不稳定、输入端电池电流波动大等问题

提出了一种自适应滑模控制策略。结合升压变换器的平均状态模型和超级电容特性建立了升压型电池-超级电容复合电源的动态模型。在此基础上

设计自适应观测函数并根据李亚普诺夫函数确定自适应规则。选取合适的滑模面

基于滑模面和自适应规则设计占空比函数。考虑复合电源的工作需求

分别针对恒流和恒压控制设计比例因子。搭建实验台进行测试

实验结果表明:与PI控制策略相比

升压型电池-超级电容复合电源采用自适应滑模控制

能使系统快速达到稳定状态

在恒压控制和恒流控制条件下

系统的调节速度分别提高了88.8%与62.5%; 在超级电容电压较低时

采用自适应滑模控制能有效抑制输出电压和电感电流波动

提升系统的安全性和可靠性。

Abstract

For the battery-supercapacitor(SC)hybrid power source(HPS)with a boost converter

the supercapacitor voltage(i.e. output voltage)might be unstable and the battery current(i.e. input current)fluctuation might be very high. To solve these problems

an adaptive sliding-mode control strategy is proposed. A dynamic model of the battery-SC HPS with the boost converter is established by combining the conventional averaged model of the boost converter and the characteristics of the SC. It is based on the model that an adaptive estimator is designed to estimate the related parameters

and adaptive rules are defined according Lyapunov function. Furthermore

a suitable sliding surface is selected and a duty ratio function is designed according to the selected sliding surface and the adaptive rules. Observe gains are also designed in accordance with the constant current/voltage control requirement in the HPS. An experimental platform is established. Experimental results show that the proposed strategy makes the system reach steady state quickly. A comparison with the PI control strategy in the conditions of both constant current control and constant voltage control shows that the strategy improves the transient time by 88.8% and 62.5%

respectively. It effectively eliminates the fluctuation of the output voltage and inductor current

and improves the safety and reliability of system when the SC voltage is lower.

关键词

Keywords

references

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