混合能量存储系统中直流变换器在峰值电流控制下的混沌问题  

The Chaos Phenomena of DC-DC Converter Under Peak Current Control in Hybrid Energy Storage System

作　　者：吴志伟[1] 张建龙[1] 殷承良[1] 

机构地区：[1]上海交通大学汽车电子控制技术国家工程实验室,上海200240

出　　处：《汽车工程》2014年第5期542-545,共4页Automotive Engineering

摘　　要：由于超级电容的工作电压范围广,直流变换器在无电流补偿的峰值电流控制下出现分岔,甚至产生混沌现象。本文中研究了双向直流变换器在超级电容和电池主动并联混合能量存储系统应用中的控制问题,确定了发生分岔时电池和超级电容的工作电压关系。结果表明,采用电流斜坡补偿方法,可使直流变换器在电池和超级电容的工作电压范围内不发生分岔和混沌现象,改善了控制质量。Due to the wide voltage range of ultra-capacitor,when DC-DC converter is under peak current control without current compensation,bifurcation,even chaos,in DC-DC converter occur.In this paper,the control issue in the application of bidirectional DC-DC converter to the battery-ultracapacitor hybrid energy storage system with active parallel connection is studied and the relationship between the working voltage of battery and that of ultra-capacitor is determined.The results indicate that bifurcation and chaos phenomena in DC-DC converter can be avoided in the working range of voltage of battery and ultra-capacitor by adopting current ramp compensation scheme,hence improving the quality of control.

关 键 词：混合能量存储系统 双向直流变换器 峰值电流控制 分岔 混沌 斜坡补偿 

分 类 号：TM46[电气工程—电器]