How does a three-phase ac motor form a circuit?
The method of circuit of three-phase ac motor is as follows: When the three-phase stator winding of the motor (the difference between a 120 - degree Angle), access after the three-phase alternating current (ac), will produce a rotating magnetic field, the rotating magnetic field cutting rotor winding, thus produce induced current in the rotor winding is closed (rotor winding path), the rotor of current-carrying conductor under the effect of the stator rotating magnetic field will produce electromagnetic force, as to form the electromagnetic torque on the motor shaft, motor rotation, and the motor rotation direction is the same as the rotating magnetic field direction. Three-phase motor, refers to the three phase when the motor stator winding Angle of 120 degrees (the difference between electric), to the three-phase alternating current (ac), will produce a rotating magnetic field, the rotating magnetic field cutting rotor winding, thus produce induced current in the rotor winding, rotor winding is closed path).
He has two ways of looking at your connection, you have a star and a triangle. The three-phase algorithm also involves the phase Angle of the current. The star connection means that the third phase of the heating tube is connected at the end and the third phase is the power end. The triangle connection means that the three heating pipes are connected to each other, and the three end points are the power end. Star connection: the line voltage is equal to the square root of the phase voltage, and the line current equals the current. Delta connection: line voltage is equal to phase voltage, and line current is equal to the square root of three times the current.
The principle of a three-phase motor is; The three-phase winding of the motor are 120 degrees apart in space, in the three phase line differ by 120 degrees electric horn three phase alternating current A rotating magnetic field, can be born, in under the action of electromagnetic induction, the rotor rotation. The three-phase alternating current, which is itself three circuits, is not necessary to use a zero line because of the uniform load. A - B, c. B - A, c. c-a, B
If it's delta connection of motor current loop is: 380 v high phase coil to B phase coil to power 380 v low-end, 380 v high-end B phase to phase C coil to coil power 380 v low-end, high-end phase coil to coil of A phase C 380 v to power 380 v low end. Each phase is 120 degrees. If is Y connection that Y connection motor current loop is: 220 v through A coil to neutral (zero line), the 220 v B coil to neutral (zero line), the 220 v coil after C to neutral phase (zero line). Each phase is 120 degrees.
