Modeling and Simulation of Vehicular Power Systems - webfiles its ...

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So a modeling tool being able to design not only drive train components but alsoembedded control software is needed.2.4 Hybrid Vehicles Drive TrainsAs the name expresses, hybrid vehicles get benefit of minimum two energy sources. Thedemanded power for traction and other auxiliary loads in the vehicle is shared betweentwo sources of energy with a specific power sharing management. The main parts of eachhybrid vehicle could be classified as:• Primary energy storage system• Secondary energy storage system• Primary energy converter• Secondary energy converter• Control system• TransmissionIn figure 2.4 examples of energy storage systems and different energy conversion unitsare shown.6
Figure 2-4: Generic traction system structureThere are different topologies of hybrid vehicles but series and parallel topologies are themost commonly used ones [9]. Hybrid electric systems can be broadly classified as seriesor parallel hybrid systems [4], [5]. In series hybrid systems, all the torque required topropel the vehicle is provided by an electric motor. On the other hand, in parallel hybridsystems, the torque obtained from the heat engine is mechanically coupled to the torqueproduced by an electric motor. In an electric vehicle, the electric motor behaves exactlyin the same manner as in a series hybrid. Therefore, the torque and power requirements ofthe electric motor are roughly equal for an electric vehicle and a series hybrid, while theyare lower for a parallel hybrid [8].Each topology has its own drive train and components. It also has its own advantagesand disadvantages and uses different control strategies. In the following, the principle andmain components of each topology will be explained.2.4.1 Series Hybrid VehiclesIn this topology the primary energy converter is the internal combustion engine (ICE)which has been connected to an electric motor working as a generator. The out-put of thegenerator through power electronic converters is connected to the secondary energystorage which is a battery. The battery via power electronic converters is connected to an7
Page 1: AhaModeling and Simulation of Vehic
Page 4: To my parents, brother and my love
Page 7 and 8: Table of ContentsAcknowledgment....
Page 9 and 10: List of FiguresFigure 2-1: Oil cons
Page 11: List of TablesTable 3-1 List of som
Page 14 and 15: xii
Page 16 and 17: Chapter 4 discusses the dynamics of
Page 18 and 19: The Other environmental effects of
Page 22 and 23: electric motor to provide the tract
Page 24 and 25: Figure 2-8: Configuration of a para
Page 26 and 27: Vehicle system modeling can be done
Page 28 and 29: Figure 3-2: EMTS solution flow-char
Page 30 and 31: Figure 4-2: The deflection of tyre
Page 32: V −Vwheel actualλa=( 4-9)VwheelV
Page 35 and 36: Figure 4-5 Friction coefficient cha
Page 37 and 38: The gear box consists of different
Page 39 and 40: Where• I = discharge current [amp
Page 41 and 42: decreases very rapidly. In electric
Page 43 and 44: Thus, this simulation model is capa
Page 45 and 46: VOCRchargeRdischargeSOCTempSOCQmaxT
Page 47 and 48: Figure 5-8 Battery open circuit vol
Page 49 and 50: Figure 5-11 Charging resistance ver
Page 51 and 52: 6 Engine, electric machine and cont
Page 53 and 54: 4 Idle speed 840 rpm5 Peak power 15
Page 55 and 56: 7 Modeling in Simulink/MatlabOnce t
Page 57 and 58: Figure 7-3 Vehicle dynamics block i
Page 59 and 60: 7.3 EngineAs described in Chapter 5
Page 61 and 62: Figure 7-7 Automatic driver model b
Page 63 and 64: 8 Simulation ResultsIn this chapter
Page 65 and 66: Peak generator torque1074 N.mPeak g
Page 67 and 68: Figure 8-5 Wheel speed and translat
Page 69 and 70: Figure 8-7 Engine and generator pow
Page 71 and 72:
Figure 8-9 Battery state of charge
Page 73 and 74:
9 ConclusionRegarding the significa
Page 75 and 76:
References[1] Shuo Tian, Guijun Cao
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