Single Central Magnet Motor Actuator Generator (SCM MAG)

thingiverse

Human: A versatile SCM MAG motor, actuator, or generator can be created using 3D printing. The design's unique feature is its use of a single magnet in the rotor and two coils wrapped around it. A principle of operation explains how the device works. The interaction between the conductor, current, and permanent magnet inside the coil drives the device's functionality. When voltage is applied to the coil, the magnet rotates 90 degrees. With the second coil activated, the magnet turns another 90 degrees. Details about the design reveal a rotor with a central magnet and shaft. The stator consists of two coils at a 90-degree angle to each other. SCM MAG comprises several 3D printed parts, a magnet, bearings, shaft, and two coils. Motor For motor use, increasing the coil wire diameter is recommended. The required diameter should be chosen based on traction force and temperature parameters. For high torque applications, consider using more heat-resistant filament types for the plastic parts. Calculate the coil current to prevent operating temperatures from exceeding the ABS plastic melting point. A feedback system and driver are necessary for motor operation. Motor power depends solely on coil current and magnet parameters. Longer magnets result in higher traction characteristics. Actuator For actuators, wire diameter requirements mirror those of motors. However, due to start-stop operation, selecting a larger wire diameter (10-15% bigger than motor specifications) is crucial. Using a driver and tracking system enables precise rotation or turns to the desired angle. Generator AWG32 (0.2mm wire) with 100 turns in each coil was used for this generator design. Adding soft magnetic iron around the stator can increase efficiency by altering the magnetic field path. A modular generator, where individual generators are placed around the circumference, is also possible. Assembled shafts through belts or gears result in a low RPM generator. This device utilizes a neodymium magnet (N38) with a 30mm height and 10mm diameter. The magnet is chosen for a 4mm shaft but can accommodate other diameters. https://youtu.be/aCEUKgyNtCs