Induction Motor: Rotating Field Vector & Torque-Slip Curve (2D)

Every three-phase induction motor works because three fixed windings, fed with currents 120° apart in time, sum to a magnetic field vector that rotates in space even though nothing physical is spinning inside the stator. This 2D simulator computes that space vector directly from three discrete instantaneous phase currents every frame — a real vector sum, not an assumed rotation — and separately integrates the rotor's actual equation of motion, J·dω/dt = T(s) − T_load, against the equivalent-circuit torque-slip curve plotted live beside the machine cross-section. Adjust frequency, pole pairs, supply voltage and load torque and watch the operating point climb (or fail to climb) that curve in real time, including the real phenomenon where a motor with plenty of breakdown torque in reserve still can't start because its locked-rotor torque alone is below the load.