荣成市华宇电机有限公司

Advantages and Disadvantages of Y-connection and △-Connection of Three-phase Asynchronous Motor

2020-12-08

Main and tail connection: three windings, then three - phase power supply. The winding schematic is triangular;Y connection: three windings are connected together as the neutral point, and three tails are connected with three-phase power.Air current connection has the advantage of high output power, high starting torque, and high starting current.

VVVF Characteristics of Three-phase Asynchronous Motor?

2018-10-28

1. It has a wide range of applications, operating with constant torque at 0-50hz; Constant power operation at 50-100hz. 2. Smooth speed adjustment, stepless speed adjustment in the range of 5-100hz 3. Good speed stability.

Advantages and Disadvantages of Y-connection and △-Connection of Three-phase Asynchronous Motor

2018-10-28

Main and tail connection: three windings, then three - phase power supply. The winding schematic is triangular;Y connection: three windings are connected together as the neutral point, and three tails are connected with three-phase power.Air current connection has the advantage of high output power, high starting torque, and high starting current.

Working principle of three-phase asynchronous motor

2018-10-28

When the stator windings are connected with symmetrical three-phase alternating current, a rotating magnetic field is generated in space. As the rotor is cutting the magnetic force line, induced electromotive force and force are generated on the rotor at the same time. Thus, the electromagnetic torque is formed on the motor shaft, driving the motor to rotate, and the motor rotation direction is the same as the rotating magnetic field direction.

Reasons for over-high no-load current of three-phase asynchronous motor

2018-10-28

1. The air gap between stator and rotor exceeds the specified value.2. Axial displacement of motor rotor; Refers to the contraction of one end of the rotor into the stator core, which increases the magnetoresistance encountered at the end of the magnetic flux, leading to excessive no-load current.