Step-by-step Small-Signal Modeling and Control of a Light Hybrid Electric Vehicle Propulsion System

Raga Raga,Barrado Barrado,Martín-Lozano Martín-Lozano,Quesada Quesada,Lázaro Lázaro

doi:10.3390/en12214082

Raga Raga, Barrado Barrado + Show 3 more

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https://doi.org/10.3390/en12214082

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Journal: Energies	Publication Date: Oct 25, 2019
Citations: 5	License type: CC BY 4.0

Affiliation: Carlos III University of Madrid

Abstract

This paper develops step-by-step a complete electric model of a light hybrid electric vehicle propulsion system. This model includes the vehicle mass, the radius and mass of the wheels, the aerodynamic profile of the vehicle, the electric motor and the motor drive, among other elements. Each element of the model is represented by a set of equations, which lead to getting an equivalent electric circuit. Based on this model, the outer and inner loop compensators of the motor drive control circuit are designed to provide stability and a fast dynamic response to the system. To achieve this, the steady-state equations and the small-signal model of the equivalent electric circuit are also obtained. Furthermore, as these elements are the main load of the power distribution system of the fully electric and light hybrid electric vehicle, the input impedance model of the set composed of the input filter, the motor drive, the motor, and the vehicle is presented. This input impedance is especially useful to get the system stability of the entire power distribution system.

Highlights

The presence of electric vehicles (EV) in the automotive industry is growing rapidly [1]
The modeling procedure can be extended to other types of vehicles, this paper focuses on light vehicles, those whose weight is less than 1000 kg and which are mainly used in cites or in industrial speed-limited areas
This paper develops, step-by-step and in detail, the main analyses that must be addressed to obtain a complete electric model of a light hybrid electric vehicle propulsion system, as well as the input impedance expressions necessary to evaluate the system stability

Summary

Introduction

The presence of electric vehicles (EV) in the automotive industry is growing rapidly [1]. According to the International Energy Agency, 125 million electric vehicles are expected to be manufactured by 2030 [2]. This growing market requires the optimization of the vehicle design and, an optimized propulsion system. The correct sizing is needed to properly design the vehicle Power sources such as fuel cells, batteries, and supercapacitors have to manage a power that depends on the power consumption of the vehicle. This power consumption is related to two key factors: the shape and weight of the vehicle and the driving profile

Objectives

Methods

Conclusion