ABB High Voltage AC Motor

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Q:The difference between DC motor and AC motor
The construction of three-phase induction motor is also divided into two parts: stator and rotor.(1) stator:The stator is the fixed part of the motor, which is used to produce rotating magnetic field. It is mainly composed of stator core, stator winding and frame.(2) rotor:The rotor is the main part of the rotor. There are two kinds of rotor, squirrel cage and wound rotor. Grasp their respective characteristics and differences. The squirrel cage type motor used for medium and small power (100K or less) is simple in structure, reliable in operation and convenient in operation and maintenance. Winding type can improve startup performance and speed regulation. The air gap between stator and rotor will affect the performance of the motor. The general air gap thickness is between 0.2-1.5mm.Master the wiring method of stator winding.
Q:The difference between AC motor frequency conversion speed regulation and voltage regulation speed regulation
Variable frequency speed regulation: frequency conversion speed, the square of the voltage and frequency ratio is constant, that is, the frequency modulation at the same time, voltage, speed range, high smoothness, can achieve constant torque or constant power speed regulation.Voltage regulation: smoothness is good, speed range is narrow, only applicable to fan and pump load.
Q:How to make the AC motor stop rotating rapidly?
A, electromagnetic brake.Two, use YEJ motor with brake itself, it also and ordinary Y series three motor mounting dimensions are exactly the same, but with a little bit length.
Q:What are the differences between AC motors and DC motors?
The same thing is that their principles are the same, using the laws of electromagnetic inductionDifferent is the DC motor through the commutator to change the direction of the current. To get a transfer from the principle, I will not say, junior high school. It is through the AC motor into alternating current to produce a rotating magnetic field, in the motor, and then the law of electromagnetic induction.
Q:What does the D axis and the Q axis mean for AC induction motors?
AC asynchronous motor is a kind of electric drive device which transforms electric energy into mechanical energy. It is mainly composed of stator, rotor and air gap between them. After the stator winding leads to the three-phase AC power supply, the rotating magnetic field is generated and the rotor is cut to obtain torque. Three phase AC asynchronous motor has many advantages, such as simple structure, reliable operation, low price, high overload capacity, convenient operation, easy installation and maintenance. It has been widely used in various fields.
Q:What's the function of carbon brushes for AC motors?
AC motor brush: brush effect can be used for DC motor or AC motor commutator or slip ring, as sliding contact body import and export current, its thermal conductivity, and good lubrication performance, and has certain mechanical strength and direction of the spark of instinct. Almost all motors use carbon brush, which is an important component of the motor
Q:How do I change the speed of the motor?
Three phase asynchronous motor speed formula is: n=60f/p (1-s) 1, do not change the synchronous speed control method. Winding motor speed control, chopper speed regulation, cascade speed regulation, and application of electromagnetic slip clutch, hydraulic coupling, oil film clutch and so on. 2. Change the speed regulation method of synchronous speed. Change the stator pole count of multi speed motor, change the stator voltage and frequency variable frequency speed regulation, there can be no commutation motor speed regulation, etc..
Q:Who knows the main difference between DC motor and AC motor, I hope to say a little more simple, thank you
DC motor speed control is simple, but the use of limited occasions. AC motor speed control is relatively complicated, but it is widely used due to the use of AC power supply.
Q:The difference between DC motor and AC motor in electric stacker
Disadvantages of DC motor1. direct current motor manufacturing is more expensive2. carbon brush
Q:Is the 380V single-phase AC motor the same as that of the 220V AC motor?
The single-phase motor has two windings, that is, the starting winding and the running winding. The two windings are 90 degrees apart in space. On a starting winding connected in series with a large capacity capacitor, when running and starting winding winding by single-phase alternating current, because the capacitor make the starting current in the winding in time than the current running winding advance angle of 90 degrees, the first to reach the maximum.

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