Rongcheng Electric's three-phase asynchronous motor principle and characteristics, bosses, please take a look!
Rongcheng motor asynchronous motor, also known as "induction motor", refers to a rotor placed in a rotating magnetic field, which obtains a rotational torque under the action of the rotating magnetic field, thus causing the rotor to rotate. A rotor is a rotatable conductor, usually in the shape of a squirrel cage. The stator is the non rotating part of an electric motor, whose main task is to generate a rotating magnetic field. A rotating magnetic field is not achieved by mechanical means, but by alternating current passing through several pairs of electromagnets, causing their magnetic pole properties to cyclically change, thus equivalent to a rotating magnetic field.
According to the type of AC power used, there are single-phase motors and three-phase motors. Single phase motors are used in devices such as washing machines and electric fans; Three phase electric motors are used as power equipment in factories.
Working principle of asynchronous motor: Through the relative motion between the rotating magnetic field generated by the stator and the rotor winding, the rotor winding cuts the magnetic induction line to generate induced electromotive force, thereby generating induced current in the rotor winding. The induced current in the rotor winding interacts with the magnetic field to generate electromagnetic torque, causing the rotor to rotate.
When the rotor speed gradually approaches the synchronous speed, the induced current gradually decreases, and the generated electromagnetic torque also decreases accordingly. When the asynchronous motor operates in the motor state, the rotor speed is lower than the synchronous speed.
Asynchronous motors are most widely used in electric vehicles. Compared to DC motors, they have a wider range of speed adaptability, which allows them to meet the high-speed cruising needs of vehicles even without the need for a secondary differential or gearbox.
Rongcheng electric motor has the ability of variable frequency speed regulation, which is equivalent to the linear relationship between engine speed and vehicle speed when accelerating a vehicle equipped with a continuously variable transmission as we understand it. Asynchronous motors are also easier to achieve kinetic energy recovery. When the vehicle slides or brakes, the wheels reverse the rotation of the electric motor. Under this condition, the electric motor can generate electricity and recover it into the battery, thereby extending the vehicle's range.
