VARIASTEL-V2 - Motor frequency converter test bench

Presentation:

"VARIASTEL-V2" is a test bench for studying the speed variation of three-phase asynchronous motors under load.

The system is centered around an asynchronous motor connected to a powder brake and controlled by a SCHNEIDER ELECTRIC frequency converter.

Composition:

- A control panel equipped with adjustment and control devices for the frequency converter
- A front panel dedicated to the wiring of the drive's inputs/outputs (digital and analog)
- A three-phase asynchronous motor coupled to a powder brake, allowing a resistive load to be simulated in various scenarios.

Educational activities:

- Connect the drive terminal block to a control panel according to specifications.
- Implement, configure, and adjust a variable speed drive.
- Measure, visualize, and analyze the physical quantities of the motor (flux frequency, rotation frequency, motor current, motor torque), highlight slip as a function of load.- Experiment with several control laws for three-phase asynchronous motors:
U/F (variable torque)
U/F with slip compensation
Flux vector control
- Plot the mechanical characteristic curve of the asynchronous motor in real time.- Decode a ModBus frame, develop a ModBus frame, and communicate with the variable speed drive
- Configure and manage the drive's digital and analog I/O, wire a simple control circuit.

References:

DD//VARIASTELV2: Study of speed variation in MAS motors