AEL-DCEMT DC Electrical Motors Applications

4.3.2.2.- DC ELECTRICAL MOTORS AND GENERATORS
DC ELECTRICAL MOTORS APPLICATIONS - AEL-DCEMT

INNOVATIVE SYSTEMS

The DC Electrical Motors Applications, "AEL-DCEMT", have been designed by EDIBON to carry out electrical/mechanical tests for a great variety of DC motors.

See general description

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General Description

The DC Electrical Motors Applications, "AEL-DCEMT", have been designed by EDIBON to carry out electrical/mechanical tests for a great variety of DC motors. Such tests allow obtaining the most significant electrical and mechanical characteristics of these motors .In addition, it is advisable to acquire the Control and Data Acquisition System Software for Electrical Machines, "EM-SCADA", with which the user will be able to obtain the characteristic curves for the tested electric motors and fulfill reports and comparisons of the obtained curves for each electric motor to study its advantages and application fields.

The "AEL-DCEMT" applications allows the user to study in depth the behavior of a wide range of DC motors, such as DC Independent Excitation Motor, DC Series Excitation Motor, DC Shunt Excitation Motor-Generator, DC Compound Excitation Motor-Generator, etc.

For this purpose, the application includes a servomotor, an electronic overcurrent time relay and a series of measurement devices, such as an analog ammeter , an analog voltmeter, a multimeter and an optical speed meter. All these included elements are essential to study the AC motors characteristics. Dynamic braking tests can be carried out through the servomotor while parameters such as speed, electrical current, the voltage, the power factor or the active and reactive powers are measured.

For the fulfillment of electric motors advanced tests, it is advisable to acquire the Control and Data Acquisition System Software for Electrical Machines, "EM-SCADA". This advanced software allows monitoring the waveforms for current, voltage, torque and speed to study in depth the electric machines.

Exercises and guided practices

GUIDED PRACTICAL EXERCISES INCLUDED IN THE MANUAL

  1. Study of the operation of the independently excited DC motor.
  2. Study of the operation of the series-excited DC motor.
  3. Study of the operation of the shunt-excited DC motor.
  4. Study of the operation of the compound-excited DC motor.
  5. Study of the operation of the brushless DC motor.
  6. Obtaining the torque versus speed curve of a DC motor.
  7. Study of the operation of the DC machine as a generator.

Possible laboratory exercises depending on the kit used:

Some practical possibilities with DC Independent Excitation Motor-Generator Kit (DCEMT-K1):

  1. Study of the operation of the independently excited DC motor.
  2. Study of the operation of the brushless DC motor.
  3. Obtaining the torque versus speed curve of a DC motor.

Additional practical possibilities:

  1. Wiring of the DC independent excitation motor.
  2. Starting and speed and torque control with the speed controller.
  3. Braking test with the servomotor.
  4. Measurement of the armature current and resistance.
  5. Computation of the counter-electromotive force (CEMF).
  6. Computation of the electromagnetic power and losses of the DC independent excitation motor.
  7. Obtaining of torque vs. speed curve for the DC independent excitation motor.

Some practical possibilities with DC Series Excitation Motorgenerator Kit (DCEMT-K2):

  1. Study of the operation of the series-excited DC motor.
  2. Obtaining the torque versus speed curve of a DC motor.

Additional practical possibilities:

  1. Wiring of the DC series excitation motor.
  2. Starting and speed and torque control with the speed controller.
  3. Braking test with the servomotor.
  4. Measurement of the armature current and resistance.
  5. Computation of the counter-electromotive force (CEMF).
  6. Computation of the electromagnetic power and losses of the DC series excitation motor.
  7. Obtaining of torque vs. speed curve for the DC series excitation motor.

Some practical possibilities with DC Shunt Excitation Motorgenerator Kit (DCEMT-K3):

  1. Study of the operation of the shunt-excited DC motor.
  2. Obtaining the torque versus speed curve of a DC motor.

Additional practical possibilities:

  1. Wiring of the DC shunt excitation motor.
  2. Starting and speed and torque control with the speed controller.
  3. Braking test with the servomotor.
  4. Measurement of the armature current and resistance.
  5. Computation of the counter-electromotive force (CEMF).
  6. Computation of the electromagnetic power and losses DC shunt excitation motor.
  7. Obtaining of torque-speed curve for the DC shunt excitation motor.

Some practical possibilities with DC Compound Excitation Motor-generator Kit (DCEMT-K4):

  1. Study of the operation of the compound-excited DC motor.

Additional practical possibilities:

  1. Wiring of the DC compound excitation motor.
  2. Starting and speed and torque control with the speed controller.
  3. Braking test with the servomotor.
  4. Measurement of the armature current and resistance.
  5. Computation of the counter-electromotive force (CEMF).
  6. Computation of the electromagnetic power and losses of the DC compound excitation motor.
  7. Obtaining of torque vs. speed curve for the DC compound excitation motor.

Some practical possibilities with DC Shunt/Series/Compound Excitation Motor-Generator Kit (DCEMT-K5):

  1. Study of the operation of the independently excited DC motor.
  2. Study of the operation of the series-excited DC motor.
  3. Study of the operation of the shunt-excited DC motor.
  4. Study of the operation of the compound-excited DC motor.
  5. Obtaining the torque versus speed curve of a DC motor.
  6. Study of the operation of the DC machine as a generator.

Additional practical possibilities:

  1. Desired wiring of the DC motor excitation, independent, series, shunt or compound.
  2. Starting and speed and torque control with the speed controller.
  3. Braking test with the servomotor.
  4. Use of the motor as a generator.
  5. Measurement of the armature current and resistance.
  6. Computation of the electromotive force (EMF).
  7. Computation of the electromagnetic power and losses of the DC generator.
  8. Obtaining of torque vs. speed curve for the DC generator.

Practical exercises with the recommended Control and Data Acquisition System Software for Electrical Machines, with SCADA, "EM-SCADA":

  1. Real time torque measurement.
  2. Real time speed measurement.
  3. Real time current and voltage RMS values.
  4. Real time current and voltage waveforms measurement.
  5. Electrodynamical study of the motor.
  6. Obtaining characteristic curves (torque-speed curve, torquecurrent curve etc).
  7. Obtaining the saved results.
  8. Manual and automatic braking test and real time monitoring of the results.
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MORE PRACTICAL EXERCISES TO BE DONE WITH THE UNIT

  1. Several other exercises can be done and designed by the user.

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