scholarly journals Principle analysis of torque ripple test bench for electric machine for electric vehicle application

2019 ◽  
Vol 295 ◽  
pp. 052008
Author(s):  
Guohui Yang ◽  
Shuo Zhang ◽  
Chengning Zhang ◽  
Yongxi Yang
Keyword(s):  
Electric Vehicle ◽  
Test Bench ◽  
Torque Ripple ◽  
Electric Machine

scholarly journals Drivability Optimization by Reducing Oscillation of Electric Vehicle Drivetrains

2020 ◽  
Vol 11 (4) ◽  
pp. 68
Author(s):  
Andreas Koch ◽  
Ludwig Schulz ◽  
Gabrielius Jakstas ◽  
Jens Falkenstein
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Electric Drive ◽  
Test Bench ◽  
Inverse Dynamics ◽  
Inertial Mass ◽  
Electric Machine ◽  
Combustion Engines ◽  
Hardware In The Loop ◽  
Internal Excitation

The drivetrain of electric vehicles differs significantly from vehicles with combustion engines. Current concepts of electric vehicle drivetrains usually have a low damping. Typically, there is no clutch to separate the inertial mass of the electric drive machine from the rest of the vehicle drivetrain. External (road unevenness, potholes, etc.) and internal excitation (torque changes of the electric machine, brake interferences, etc.) cause jerk oscillation and sometimes high component stress. These excitations can be reduced by suitable drivability functions, to which a reference filter can also be assigned. A common approach known from conventional drivetrains is to limit the gradient of the demand torque of the drive machine or the driver′s desired torque in order to influence the torque build-up of the drive machine and to reduce the excitation of jerk oscillations. A second approach is the use of a prefilter. The prefilter uses the inverse dynamics of the drivetrain to influence the demand torque of the drive machine. In this paper, the influence of a prefilter based on the inverse dynamics of electric vehicle drivetrains to reduce oscillations is investigated. In addition, an anti-jerk control enhances the drivability function afterwards. All investigations are made on a hardware-in-the-loop test bench to create reproducible results.

A test bench on quality checking for electric vehicle chargers

2021 ◽  
Author(s):  
J. Jency Joseph ◽  
F.T. Josh ◽  
S. Leander Gilbert
Keyword(s):  
Electric Vehicle ◽  
Test Bench

Energy management of electric and hybrid vehicles dependent on powertrain configuration

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Bogdan Varga
Keyword(s):  
Electric Vehicle ◽  
Power Flow ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Planetary Gear ◽  
Internal Combustion ◽  
Hybrid Vehicle ◽  
Hybrid Vehicles ◽  
Electric Machine ◽  
Range Extender

AbstractElectric and hybrid vehicles are going to become the most reliable source of transport for future years. The CO2 and NOx targets in Euro 6 normative puts the producers of vehicles in a dilemma, whether to adapt the internal combustion engines further, or to develop hybrid or electric power trains that are going to reach the pollution limit of the future norms or to go below that. Before acting a well-developed strategy in determining the optimum power flow has to be developed by producers; CRUISE software is a tool with the unique and special characteristics to determine the optimum in this highly important area.Whether electric vehicle, electric vehicle with range extender or a hybrid with CVT or planetary gearbox, the complexity of the mathematical modules remains the same, giving the developer the possibility to create complex functions and distinctive characteristics for each component of the vehicle.With such a powerful tool it becomes extremely easy to evaluate the energy flow in all directions, from electric machine to the battery, from electric machine to the power generator, and from the electric machine to the internal combustion engine. Applying to the (Electric Vehicle, Electric Vehicle with Range Extender, Hybrid vehicle with CVT, Hybrid vehicle with planetary gear set) the ECE-15 in a virtual environment (urban driving cycle) the simulation results show a different usage, rate of storage and efficiency concerning the energy, this being dependent of the power train configuration in most part.

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