Constant power loads and negative impedance instability in automotive systems: Definition, modeling, stability, and control of power electronic converters and motor drives

被引:683
作者
Emadi, Ali [1 ]
Khaligh, Alireza [1 ]
Rivetta, Claudio H. [1 ]
Williamson, Geoffrey A. [1 ]
机构
[1] IIT, Dept Elect & Comp Engn, Elect Power & Power Elect Ctr, Chicago, IL 60616 USA
关键词
constant power loads (CPLs); control; electric vehicles (EVs); fuel cell vehicles (FCVs); hybrid electric vehicles (HEVs); modeling; modeling and analysis; motor drives; negative impedance instability; power converters; stability; state-space averaging;
D O I
10.1109/TVT.2006.877483
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
Power electronic converters and electric motor drives are being put into use at an increasingly rapid rate in advanced automobiles. However, the new advanced automotive electrical systems employ multivoltage level, hybrid ac and dc as well as electromechanical systems that have unique characteristics, dynamics, and stability problems that are not well understood due to the nonlinearity and time dependency of converters and because of their constant power characteristics. The purpose of this paper is to present an assessment of the negative impedance instability concept of the constant power loads (CPLs) in automotive power systems. The main focus of this paper is to analyze and propose design criteria of controllers for automotive converters/systems operating with CPLs. The proposed method is to devise a new comprehensive approach to the applications of power electronic converters and motor drives in advanced automotive systems. Sliding-mode and feedback linearization techniques along with large-signal phase plane analysis are presented as methods to analyze, control, and stabilize automotive converters/systems with CPLs.
引用
收藏
页码:1112 / 1125
页数:14
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