AEL-MGTC Aplicação de Construção de Motores, Geradores e Transformadores

The Motors, Generators and Transformers Construction Application, "AEL-MGTC", has been designed by EDIBON to provide practical training in the electromechanical construction of electrical machines, covering the stages involved in manufacturing their windings, assembling their components, establishing electrical connections, and verifying their operation. Users participate directly in the construction process of DC and AC motors and single-phase and three-phase transformers, gaining knowledge of their operating principles, the characteristics of each configuration, and commissioning procedures.

The process begins with the design and manufacture of the windings, following the procedures described in the unit's specific manual, which covers the design, manufacture, construction, and winding of motors, generators, and transformers. For this purpose, the Manual Winding Machine for Motors and Transformers, "MWMT", is used. It includes different winding templates for producing windings of various sizes and a turn counter to monitor the number of turns during winding. The unit includes copper wire of different sizes and the Tool Box, "CHER", required for assembly and connection operations.

Once the windings have been manufactured, they are installed in the magnetic circuits and the electrical machines are assembled. The motors are supplied disassembled, with an accessible rotor and stator for winding and assembly exercises. The transformers include U-shaped iron components for installing the windings and completing their construction. This methodology allows users to relate the arrangement of the windings and structural components to the operation of each machine.

The 3PH AC Power Supply Module, "N-VPS01", is used for power supply and commissioning. It provides variable three-phase AC and DC voltages, as well as a fixed three-phase output. Its motorized variable autotransformer allows the output voltage to be increased, decreased, or maintained using a three-position switch. The built-in voltmeters and ammeters allow users to monitor AC and DC supply voltages and currents. The module also incorporates electrical protection devices and an emergency stop.

The constructed machines are checked using the Digital Multimeter, "MED65", which measures voltage, current, resistance, capacitance, and temperature. The Compass, "BRLA", is used to verify the magnetic fields after the windings have been installed. In this way, electrical measurements and magnetic field verification can be related to the construction, connection, and commissioning procedures.

Experimental possibilities are developed through seven construction kits, at least one of which is required, depending on the electrical machines to be studied:

• The MGTC-K1, Construction of a DC Motor-Generator Kit, allows users to construct the windings, assemble, wire, and start a DC machine, and study changes in its direction of rotation. It includes the DCMG-KIT and the N-REV variable resistance module.
• The MGTC-K2, Construction of a Three-Phase Asynchronous Motor of Squirrel Cage Kit, allows users to study the manufacture and arrangement of stator windings, wiring, and commissioning of this type of motor using the ACIMS-KIT.
• The MGTC-K3, Construction of a Three-Phase Reluctance Motor Kit, allows users to perform winding, assembly, connection, and commissioning operations on a three-phase reluctance motor using the ACRM-KIT.
• The MGTC-K4, Construction of a Three-Phase Asynchronous Motor with Wound Rotor, allows users to construct the windings, arrange them in the stator, and wire and commission a wound-rotor asynchronous motor using the ACWR-KIT.
• The MGTC-K5, Construction of a Three-Phase Synchronous Motor, allows users to perform winding, assembly, connection, and commissioning operations on a synchronous motor using the ACSM-KIT. It includes the N-VVCC/M module for DC motor speed control as an intermediate option.
• The MGTC-K6, Construction of a Three-Phase Transformer Kit, allows users to manufacture and install the windings, establish different connection configurations, and calculate the transformation ratio and voltage drops. It includes the PTSIM-KIT and the N-REFT, N-INDT, and N-CONT resistive, inductive, and capacitive load modules, allowing the transformer to be studied under different load conditions.
• The MGTC-K7, Construction of a Single-Phase Transformer Kit, allows users to study the construction, connection, and commissioning of a single-phase transformer using the PSPIM-KIT, as well as calculate the transformation ratio and voltage drops with resistive, inductive, and capacitive loads using the N-REF, N-IND, and N-CON modules.