What is the starting current of a vehicle?
1 Answers
Generally, the starting current of a sedan ranges between 100 to 300 amperes. The principle of starting current is as follows: 1. At the moment the motor is energized and remains stationary, with the rotor speed at 0, the synchronous rotating magnetic field cuts the rotor windings at the maximum speed. 2. This induces the highest electromotive force in the rotor windings, generating a large current that counteracts the magnetic flux of the stator field. To maintain the original magnetic flux compatible with the power supply voltage, the stator windings automatically increase the current. 3. Since the rotor current is very large at this time, the stator current of the motor also increases significantly, reaching 5 to 7 times the rated current, which explains why the motor has a high starting current.