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Electric traction is a promising technology that can bring out significant improvement in vehicle performance, fuel efficiency and energy utilization. The energy management in the traction system can be well improved through regeneration. In this paper, a method for regenerative braking has been proposed in which the induction machine is operated with negative slip to obtain braking torque. Regeneration...
This paper discusses the design and route to implementation of a regenerative braking system for a Renewable Hydrogen Hybrid Electric Vehicle (RHHEV) that would performs regenerative energy recovery based on vehicle attributes, thereby providing improved performance. A dynamic model of a regenerative braking system for a RHHEV has been derived and implemented in MATLAB/Simulink. The model is then...
This paper deals with the experience gained from the conversion of a conventional vehicle to a hybrid electric vehicle (HEV).The resulting concept vehicle is a hybrid SUV that features an additional electric drivetrain, which is composed of a three - phase asynchronous motor, a battery pack, the power converters and the transmission system. The placement of the electric and the conventional propulsion...
Hybrid electric vehicles (HEVs) have gained immense popularity due to the rapidly increasing stringent emission norms and global environmental concerns. Unlike conventional vehicles, the presence of high charge sustaining rechargeable energy storage system (battery) in HEV distributes the vehicular power demand, thus considerably reducing the size of the internal combustion engine and in turn the...
The aim of this paper is to obtain efficient operation of the components in the series-parallel drivetrain in order to develop an optimal power distribution system. This will be done through the use of efficiency maps of the electric motor and the engine. Based on the information obtained about the speed and torque characteristics, the aim would be to operate the motor and the engine in a defined...
Regenerative braking system is the characteristic system of electric and hybrid electric vehicle. The system can restore the kinetic energy and potential energy, used during start and accelerating, into battery through electrical machine. A control strategy witch is based on ideal braking force distribution is proposed. Front wheel and rear wheel can make full use of ground adhesion condition with...
Hybrid electric vehicles (HEV) combine the power from an electric motor with that from an internal combustion engine to propel the vehicle. The HEV electric motor is typically powered by a battery pack through power electronics. The HEV battery is recharged either by the engine or from regenerative braking. The electric drive mode is very limited for an HEV due to the limited battery power. A more...
A novel power management strategy based on regenerative braking is proposed to make optimal power distribution between fuel cell system and batteries in order to improve the utility of braking energy and decrease the power loss for fuel cell electric vehicle. With the integrated regenerative braking strategy, the novel control algorithm takes the charging power loss from regenerated energy into consideration...
The dual motor powertrain (DMP) configuration is composed of gasoline direct injection (GDI) engine, two motors(one motor connects with input shaft of transmission, namely I-motor, another motor connects with output shaft of transmission, namely II-motor), automatic mechanical transmission (AMT), battery package and hybrid control system. The DMP hybrid system has the functions of engine start/stop...
This paper deals with the optimized control strategy within the vehicle which is driven by a fuel cell stack hybrid with a NiMH battery. The aim is the instantaneous energy management to optimize the hydrogen consumption. At first the powertrain was modeled using data on testbed. Then the optimization control problem basing on an equivalent hydrogen consumption strategy is defined, where the motor...
A forward looking simulation platform for fuel cell hybrid powertrain is developed in Matlab/Simulink environment in this paper. Components of fuel cell hybrid powertrain are tested and characteristic parameters are obtained to build models. The component models are verified by comparing with experiment data. Diver model is constructed for forward looking simulation method. Controller model including...
CJY6470 parallel hybrid electric vehicle (CJY6470PHEV) is a light type off-road vehicle developed by the authors. Its energy management system (EMS) has been designed using the T-S fuzzy model and fuzzy control toolbox in MATLAB 6.5. In order to simplify the system, it is divided into the energy regenerative braking system (ERBS) and the EMS in the vehicle normally driving modes. As the relationship...
This is the second part of the two-part paper to illustrate the control system design and multi-energy strategy, it is the key to fulfill the fuel economy target for ISG hybrid bus. Based on a hierarchical structure, the control system is developed with the HCU (hybrid control unit) as the central controller to coordinate the motor, engine and CAN communication protocol. The multi-energy control strategy...
One of the advantages of using electric vehicles (EVs) and hybrid electric vehicles (HEVs) is recovering energy through vehiclepsilas braking regeneration. In this paper, a regenerative braking control strategy for a fuel cell hybrid vehicular power system has been presented based on fuzzy logic. Fuel cell output power is determined according to the driving load requirement and the battery SOC, using...
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