CHDN to Model Fuel Cell generator and Supercapacitors for Electrical Vehicle applications Mouhcine Chami SeT, UTBM Belfort, France Email: mouhcine.chami@utbm.fr Abdesslem Djerdir and Abdelatif Miraoui L2ES, UTBM Belfort, France Janah Saadi LAP, ENSEM Casablanca, Morocco Abstract— The Component Hybrid Dynamic Nets CHDN is a graphic model for hybrid dynamic systems. The CHDN allows an individual representation of every component in the hybrid system. On the base of this methodology a software tool dedicated to the electrical engineering simulation has been developed. So, the aim of this paper is to present a brief review of model’s structure and to describe the developed software which has been called SimRDH. In order to show the abilities of our tool, a motorisation device, including the use of the Fuel Cell and Supercapacitors hase been studied. The obtained results are encouraging especially in the development of simulator of E.V. areas. Index terms— Component Hybrid Dynamic Nets; PEM Fuel Cell; Supercapacitor; power converters; Electrical Vehicle simu- lators. I. I NTRODUCTION Hybrid systems are natural models of complex interactive networks such as manufacturing, communication, power, and transportation systems. Hybrid systems are characterized by complex interactions between continuous dynamics and dis- crete events. Components such as generators, machines and loads have a continuous behavior, while other components such as tap-changing transformers, switched shunts, power switches, and protective devices contains some event-driven behaviors. The Component Hybrid Dynamic Nets is a graphic model for the hybrid dynamic systems introduced by Janah saadi in [1], [2]. In this model continuous components (re- sistor, inertia, tanks...) or switched ones (transistor, diodes, valves...) are explicitly and graphically developed. This model integrate also the topology of the total system what represents an important asset in simulation. In addition, this model uses the Petri Nets formalism very easy to integrate by beginners and largely used by discrete events community, more infor- mation about this model are given in [2]. In this paper, a brief review of this model is given at the beginning of the section II. Thus, the SimRDH software tool based on this model and allowing simulation of electro mechanical hybrid system is presented[3], [4]. So,the CHDN model developed for each component of the studied application is well described. Finally, the results of simulation using SimRDH and validated by Matlab are developed. The studied application concerns a new device in wish the combination of the Fuel Cell [5], [6]with supercapacitors is SM 2H O 2 2 Fuel Cell Supercapacitor 2H O 2 iBus iFC Fig. 1. The studied device used to completely supply an electrical vehicle[7], seeg Fig 1. Only association of Fuel Cell and supercapacitors with DC Bus are studied here. II. THE CHDN MODELING AND SIMRDH A. General presentation of the CHDN Component Hybrid of Dynamic Nets (CHDN) is a graphic model allowing a unified representation for each component of a system and its structure. It is composed of two parts: 1) CCDN: Component Continuous Dynamic Nets allows a representation at the component level of continuous dynamic systems. So, the CCDN as Bond Graph [8], [9], allows a unified representation of dynamic systems (Electrical, Me- chanical, Hydraulic...). Moreover, one may notice that the CCDN has an analogous presentation of continuous Petri nets [10] (Places - Transitions - weighted arcs) as shown at Fig.2. Transition Place Zero Dynamic Place X Q 0 0 V Fig. 2. The nodes of CCDN • Places: two categories of places exist: – Dynamic places: to every one of these places is associated a marker representing one of the state variables weighted by a dynamic component of the system.