摘要
通过对DC/DC变换器输出纹波进行调试,将纹波电流引入燃料电池并进行分析,得到燃料电池电化学阻抗谱(EIS),但这种方法对DC/DC控制器的快速性和稳定性提出了很高的要求。提出了一种稳定性高、抗扰动能力强的自适应无源控制策略,首先建立Boost电路模型,通过推导出对应的欧拉-拉格朗日方程,并证明该DC/DC变换器的无源性;定义电路模型的能量函数,设计无源控制的控制策略,然后通过参数估计方程,实现对负载导纳的参数估计,完成自适应无源控制器的设计。最后通过对实验结果的分析,验证了自适应无源控制的可行性和有效性。
The output ripple of DC/DC converter is debugged, the ripple current is introduced into the fuel cell and analyzed.The electrochemical impedance spectroscopy (EIS) of the fuel cell is obtained, but this method puts forward high requirements for the speediness and stability of the DC/DC controller.An adaptive passive control strategy with high stability and strong anti disturbance ability is proposed.Firstly, the Boost circuit model is established, the corresponding Euler-Lagrange equation is derived, and the passivity of the DC/DC converter is proved, the energy function of the circuit model is defined, the control strategy of the passive control is designed, and then the reference is adopted.The estimation equation is used to estimate the parameters of load admittance, and finally to realize adaptive passive control.Finally, the feasibility and effectiveness of adaptive passive control are verified through the analysis of the experimental results.
作者
张金凡
张立炎
陈启宏
龙容
ZHANG Jin-fan;ZHANG Li-yan;CHEN Qi-hong;LONG Rong(Wuhan University of Technology, Wuhan 430070, China)
出处
《电力电子技术》
CSCD
北大核心
2019年第3期125-128,共4页
Power Electronics
基金
国家自然科学基金(61673306
61703174)
国家重点研究开发项目(2017YFB0103001)~~
关键词
变换器
电化学阻抗谱
自适应无源控制
converter
electrochemical impedance spectroscopy
adaptive passive control
