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This paper describes an energy management strategy for an electric vehicle (EV). The proposed EV architecture contains a pack of the batteries which presents the energy source and a pack of the supercapacitors (SC) used as power source. The pack of the batteries produces the necessary energy to move forward the vehicle while the pack of the SC produces the lacking power in acceleration and in braking...
Presenting a coordinated control algorithm that takes into account both electric stability control (ESC) and drive force assisted steering (DFAS) performance. It introduces the correction factor ki of the driving force when driving the power steering, which designed by fuzzy control the factor with the different vehicle attitude and conditions of the rules of change, and finally the basic control...
In this paper, the impact of transmission gear ratios selection on a Nissan Leaf EV (NLEV) is investigated. The traditional single ratio gearboxes are replaced by multiple ratio ones. The selection of the gear ratio is proved to have a significant impact on electric vehicle's performance and range. A mathematical model of a NLEV is developed for both single and multiple ratio transmission systems...
For automotive applications, accurate torque production capability and high efficiency of the traction motor is very important. However, the performance of widely used interior permanent magnet (IPM) machine is influenced by temperature variation. In this paper, a control algorithm is proposed to compensate the performance variations in IPM machines due to temperature change utilizing current pulse...
This paper is concerned with the design of a robust position Backstepping tracking controller for a permanent magnet synchronous motor (PMSM). A Backstepping control law is designed from the input-output linearization of the PMSM model, written in d-q coordinates. This controller is adapted via the estimation of the unknown load torque and friction effects. A linear extended state observer is devised...
SRM is widely used in Electric vehicle applications due to its high starting torque, wide range of variable speed operation and independent phase control. For the work in this paper, we have extended the models in Powersim (PSIM) to include 12/8 Switched Reluctance Motor (SRM) and its drive and have implemented the control parameters with focus on energy efficiency, drive complexity and control characteristics...
In this paper, an optimal control allocation strategy is presented for an eight in-wheel-motor independent drive electric vehicle/four double front wheel steering(8WD/4WS). The upper level controller consists of a speed following controller and two sliding mode controllers. The speed tracking controller obtains the desired longitudinal force by tracking the longitudinal speed. Two sliding mode controllers...
In this paper, design aspects of a 6-pole synchronous reluctance traction motor are presented for improving the machine performance in electrified powertrain applications. An increase in the number of poles at the same current rating amplifies the output torque and reduces the torque pulsations. Moreover, in this machine, anisotropic structure of the rotor eliminates use of cage, windings, and magnets...
This paper deals with the control strategy for synchronous homopolar machine adapted for traction applications. Advantages and disadvantages of homopolar motors are first discussed. Mathematical models and variations of its design are given. The structure of the proposed control strategy is based on field oriented control but it was modified in order to achieve maximum performance according to experimentally...
This paper focuses on yaw stability control of in-wheel-motored electric vehicles (EVs), a nonlinear incremental model predictive control combines the error prediction control is proposed. By inputting a suitable reference model from driver action, the controller output of EV stability tracks the input. So this problem can be described as a tracking problem under constraints. To solve tracking problem,...
The paper deals with various sensorless techniques for SRM. The theory of most these techniques is described and their advantages and disadvantages are discussed. Simulation of a SRM traction drive for an electric vehicle was created and experimentally verified. A selected method is simulated on the base of a real SRM for various operating range and conditions. The method is analyzed from the point...
This paper presents a set of system equations of a dual stator induction machine (DSIM) and a new approach for online parameter identification including its verification through simulation and measurements. An uneven current share between the two three-phase systems of a DSIM is used to determine machine parameters online.
Electrically Excited Synchronous Motor (EESM) serves as an option on hybrid vehicle applications. An EESM for mild hybrid application is designed in this study. Copper loss minimization and field current minimization are analyzed for current control strategies of EESM. Both of the current control strategies are applied and comparisons between the two are made thereafter. In both of the strategies,...
Energy saving is arguably the most important factor in issues regarding energy and carbon emission. For electric vehicles in particular, saving energy extends the driving range. This can be achieved with a highly efficient variable-speed drive that can cover a wide speed range, and changing the number of poles is one way of realizing such a drive. In addition, electric vehicles must be fault tolerant...
This paper addresses a novel slip-ratio-based torque distribution strategy for electric vehicles (EVs) to avoid slippage when driving over a split friction surface. With the combination to an upper and middle controller, the desired driving force and yaw moment can be distributed to four driving wheels by utilizing the proposed lower controller. Stability analysis by using Lyapunov theorem is presented...
This paper presents a novel double-fed flux-modulation (DF-FM) machine which offers an effective electric solution for electric vehicle (EV) propulsion. This design can realize adjusted speed and torque transmission without planetary gearbox and brush system in EVs. Main advantages of this design involve high torque density, wide speed range operation and low friction loss. The steady and transient...
In order to increase the output power density and maintainability of the conventional driving system in electric vehicle, the research on magnetic gears is being carried out variously all over the world. In this paper, the design technique of the magnetic-geared permanent magnet synchronous motor(MG-PMSM) is first studied for the application of the MG-PMSM structurally integrated with magnetic gear...
A novel 6/13-pole axial field flux-switching permanent magnet (AFFSPM) machine has the advantages of compact structure, large torque density, high efficiency and good fault tolerance. In order to reduce the influence of load mutation and the variation of system parameter on the control system of AFFSPM machine, and to improve the stability of drive system, the control method of AFFSPM machine is researched...
The electrical machines are gaining more and more attentions nowadays, especially for the electric vehicle application. Compared with the radial flux machine, the axial flux machine can have higher torque density and efficiency due to its tight structure. However, most of the axial flux machines are designed with the surface mounted permanent magnets (PMs) rotor, where the reluctance torque ability...
In this study, a novel mode l of a Hybrid Electric Vehicle (HEV) based off the 2016 Chevy Volt is implemented and examined. The study will also examine the operation of the modified Series Parallel Hybrid Electric Vehicle (SPHEV) and modeled powertrain components contained within. The 2016 Chevy Volt has six unique modes of operation; however, the dual Permanent Magnet Synchronous Motor (PMSM) EV...
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