Induction, synchronous & variable-speed drives — how motors convert electricity into rotation.
Sweep or hold operating points on an induction motor's torque-speed curve with a dynamometer test bench, rotor-resistance effects and a built-in verification bench.
Explore a 3D cutaway squirrel-cage induction motor, run locked-rotor and loaded-start experiments, and study slip, torque and the rotating air-gap field.
Trip a thermal overload relay on a locked rotor, watch thermal memory accumulate and cool, and test reset-block behavior against a teaching trip curve.
Swap phases on an interlocked forward/reverse motor starter and compare a controlled coast-then-reverse sequence against high-slip plugging.
Hold rotor speed with an ideal dynamometer to compare motoring, zero-slip, induction-generating and plugging regimes on the same slip equation.
Ramp voltage and limit current on a thyristor soft starter, watch the bypass contactor engage, and run guided starting experiments with a built-in verification bench.
Sequence K1, KY and KΔ contactors through an open-transition star-delta start and compare reduced starting current against reduced starting torque.
Compare direct-on-line starts, reduced voltage, high inertia and a locked rotor using the evolving fundamental RMS starting-current envelope.
Adjust load and DC field excitation on a synchronized wound-field synchronous motor and observe the torque-angle characteristic through loss of synchronism.
Trace the rectifier, DC link and inverter of a variable-frequency drive as a V/f scalar control law accelerates an induction motor through field weakening.
Trace a start command through PLC ladder logic, contactors and overload relay to a turning shaft, then inject and diagnose real wiring faults.