AC Induction Motor Dynamics & Torque-Speed Solver

Supply & Nameplate

V
Hz
pu
Synchronous Speed ($N_s$): 1500 RPM
Rotor Speed ($N_r$): 1440 RPM
V/f Ratio: 8.00 V/Hz

Equivalent Circuit

Per Phase
Ω
Ω
Ω
Ω
Ω
W

Operating Performance

Motoring Region
Shaft Torque ($T_{shaft}$): 48.2 N·m
Mechanical Power: 7.27 kW (9.75 HP)
Breakdown Torque ($T_{max}$): 118.5 N·m (s_max = 0.14)
Starting Torque ($T_{start}$): 38.4 N·m
Stator Line Current ($I_1$): 14.8 A
Power Factor ($\cos \phi$): 0.86 (Lagging)
Overall Efficiency (η): 89.4%

Complete Torque vs Speed Profile ($0 \le N_r \le N_s$)

● Developed Torque ($T_{em}$) ● Breakdown Torque ($T_{max}$) ● Operating Point
Motor Operating Region & V/f Advisories

Induction Motor Equivalent Circuit & Torque Equations