Pull-in torque or starting torque of synchronous motor is the minimum torque required for the rotor to pull-in or attain synchronous speed with the rotating magnetic field. It signifies the point at which the motor can successfully synchronize with the applied AC voltage, ensuring proper operation. This parameter is essential for preventing stalls during startup and guaranteeing effective synchronization, influencing the motor’s overall performance and reliability. Engineers closely consider pull-in torque in motor design to optimize starting capabilities and ensure a smooth transition to synchronous operation with the power supply.
