ABB Low Voltage AC Motor QABP

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Q:When the AC motor is burnt out, is the stator burnt out or the rotor? What about DC motors?
Normally, the AC motor burns out is the stator coil, and the DC motor burns out is the rotor coil. Because the stator coil of the AC motor is armature, the rotor of the direct current motor is armature. The fluctuation of the load and the fluctuation of the supply voltage directly affect the armature coil. Of course, there are exceptions to the special case of motors.
Q:What does the D axis and the Q axis mean for AC induction motors?
The D axis and the Q axis represent the direct axis and communicate. By decomposing the stator current into the direct axis component and the quadrature axis component, the armature responses are calculated respectively so as to better control the stator currents.In permanent magnet synchronous motor control, in order to obtain similar control characteristics of DC motor,
Q:Is permanent magnet synchronous motor AC servo motor?
The permanent magnet synchronous motor is not the coil or induction material on the rotor, but the permanent magnet. Special servo drives are used to control such motors
Q:How many kW or more AC Motors should be started with the starter?
In fact, the problem needs to be taken into account in 4 main elements:1, when the motor starts, the voltage on the power distribution bus at all levels meet the normal use requirements of other equipment;2 、 mechanical energy can bear the impact torque when the motor is started at full pressure.3. The structure of the motor itself can withstand the impact of full pressure starting.4 、 does the motor start with special requirements?.
Q:Motor PWM how to speed?
PWM speed control principle of AC motor, mainly through the AC signal of a variable frequency modulation, a high frequency square wave driving voltage, resulting in a change with the frequency modulation signal driving current in the motor armature. Thus, the AC motor armature is driven by this current to produce a rotating magnetic field in accordance with the frequency of the modulation signal, so that the rotation speed of the motor rotor is changed. It is modulated by fm.
Q:Is household sewing machine good for AC motor or direct current motor?
There are special motors, and the DC motor market is rare
Q:How to change AC motor to DC motor?
Application: the DC motor and the AC motor are different in structure at first. The DC motor has a commutator (two opposed half copper rings), and the AC motor has no commutator.DC motor is generally used in low-voltage circuit, DC power can be easily carried, such as electric bicycle, that is, DC motor, as well as computer fans, recorders, motors, etc. are all.Difference method: the main point is whether there is a commutator, what power is used. A DC motor with a commutator is a DC motor.
Q:What is the difference between stepping motor and servo motor and three-phase asynchronous motor? What are the advantages of their differences?
Principle: when the asynchronous motor, the motor stator windings of AC, will produce a rotating magnetic field, the rotating magnetic field cutting rotor windings, thus the induced current in the rotor winding, the rotor conductor ampacity will produce electromagnetic force in the stator rotating magnetic field, so as to form the electromagnetic torque of the rotating shaft of the motor and drive motor rotate, and the rotation direction of the motor and the rotating magnetic field of the same direction. As the rotor of asynchronous motor and stator rotating magnetic field in the same direction, different rotating speed, there is a slip, so called asynchronous motor.AdvantageCompared with other motors, the utility model has the advantages of simple structure, convenient manufacture, good operation performance, and various material saving and low cost.shortcomingPower factor hysteresis, light load, low power factor, poor speed regulation performance.
Q:Why is the AC motor connected to the capacitor?
The capacitor is used for phase separation, to make the current phase two Rao group produced in the nearly 90 of the difference in eve joy to produce a rotating magnetic field. In three-phase electric current, the current between each phase has phase difference itself, do not divide phase. A capacitor induction motor has two windings, that is, the starting winding and the running winding. The two windings are 90 degrees apart in space. At the start of a series of winding capacitor is larger, when the running winding and start winding through the single alternating current, because the capacitor current of the starting winding in time than the current running winding advance angle of 90 degrees, the first to reach the maximum. Two of the same pulse magnetic field is formed in time and space, so that a rotating magnetic field produces the air gap between the stator and the rotor, the rotating magnetic field, the induced current in the rotor current, and rotating magnetic field interact to produce electromagnetic torque, the motor rotation.
Q:How much does 15kw power AC power consume per hour?
15kw power AC motor depends on the specific load rateIf the load rate is 100%, with the load of 15KW, 1 hours is 15kW.h, 15 degree electricity,If the load rate is 80%, with the load of 12KW, 1 hours is 12kW.h, 12 degree electricity,If there is no load, 20% to 30%, 1 hours is about 4kW.h, about 4 degrees of electricity,

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