The “AEL-EHV” application basically consists of three modules:

• 100% electric vehicle (included): it is formed by a series of modules included in the “AEL-EHV” application that allow studying the
  operation of the 100% electric vehicle.
• Hybrid vehicle (recommended): it is formed by a module recommended to work with the “AEL-EHV” application that will allow
  studying the operation of hybrid vehicles.
• Electric vehicle recharging point (recommended): this is a real recharging system for electric vehicles recommended to work with
  modules of point 1.

From the functional point of view of this application, it is important to note that for the study of the hybrid vehicle, the combustion engine is simulated by means of a servo motor because of the advantages that this involves: the dimensions of the equipment are much smaller and it can also be used inside any laboratory or classroom as it does not produce emissions.

With this application the user can easily assemble the main parts of the electric vehicle such as the combustion engine, the frequency controller with regeneration system and the electric traction motor with the capacity to regenerate energy in situations of braking or downhill. Because it is the user who assembles each of the configurations, the learning and knowledge acquired with this application goes far beyond the basics. The application includes an electrical analyzer that, among many other parameters, show the electrical power flows from the battery to the electric motor (traction mode) or from the electric motor to the battery (regenerative braking mode).

Apart from the elements already mentioned, in order to study the behavior of EVs in depth, it is essential to have a system that can simulate the terrain’s orography. This makes it possible to recreate in the laboratory real situations faced by a vehicle. These situations can be summarized as acceleration, braking and up and down ramps. Each of these situations can be realistically studied thanks to the servomotor coupled to the shaft of the main electric traction motor. The servomotor receives the commands from a servo-driver, a device included in this application that will control the servomotor dynamics to recreate real situations in the laboratory.

Finally, in order to understand how power flows are distributed in an electric vehicle, this application incorporates an intelligent regenerative DC power supply. Its purpose is to simulate the behavior of a high-voltage EV battery. The great advantage of this DC power supply is that it can simulate the operation of a lithium battery without the disadvantages that these have: heating risks, risk of toxic gas emissions, explosion risks and limited lifetime.

Optionally, the “AEL-EHV” application recommends the purchase of the electric vehicle charging module. This device is completely real, identical to those used in electric vehicle charging stations.

GUIDED PRACTICAL EXERCISES INCLUDED IN THE MANUAL

Optionally, the “AEL-EHV” application recommends the purchase of the electric vehicle charging module. This device is completely real, identical to those used in electric vehicle charging stations.

1. Study of the 100% electric vehicle, torque-speed relationship, regenerative braking, operation of a driving cycle simulating different situations. Current and voltage measurements at different points of the circuits.
2. Configuration of the terrain orography in uphill mode to study the response of the 100% electric vehicle system.
3. Configuration of the terrain orography in horizontal mode to study the response of the 100% electric vehicle system.
4. Configuration of the terrain orography in downhill mode for the study of the response of the 100% electric vehicle system.

Some practical exercises with the recommended additional hybrid vehicle element (N-ENGS):

1. Study of the hybrid-parallel vehicle, torque-speed relationship, regenerative braking, operation of a driving cycle simulating different situations. Current and voltage measurements at different points of the circuits.
2. Configuration of the terrain orography in uphill mode to study the response of the parallel hybrid vehicle system.
3. Configuration of the terrain orography in horizontal mode for the study of the response of the parallel hybrid vehicle system.
4. Configuration of the terrain orography in downhill mode for the study of the response of the parallel hybrid vehicle system.
5. Integration of different maps of the torque-speed curves of the combustion engine.
6. Comparison of the 100% gasoline vehicle with the hybrid vehicle.

Some practical exercises with the electric vehicle charger (EVCH):

1. Connection to the vehicle network for charging. Voltage and charging current measurements.
2. Theoretical analysis of the different existing charging levels: level 1, level 2 and level 3.
3. Study of the different charging times according to the capacity of the battery and the existing types of connection.
4. Study of the importance of the C-rate for the charging of the batteries of electric vehicles.

Other possibilities to be done with this unit:

1. Many students view results simultaneously. To view all results in real time in the classroom by means of a projector or an electronic whiteboard.
2. The Computer Control System with SCADA allows a real industrial simulation.
3. This unit is totally safe as uses mechanical, electrical/electronic, and software safety devices.
4. This unit can be used for doing applied research.
5. This unit can be used for giving training courses to Industries even to other Technical Education Institutions.
6. Visualization of all the sensors values used in the AEL-EHV unit process.
   – Several other exercises can be done and designed by the user.