ABB Low Voltage AC Motor QABP

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Q:What are the direct and alternating current motors used in daily life?
Friends, DC motors have toy motors, toy cars, toy planes, razors, rechargeable power tools, and in short, all batteries or batteries are DC motors. AC motor home pulverizer, threshing machine, ragweed machine, milling machine, water pump, submersible pump, booster pump, blower, electric fan, compressor, grinding machine and so on the use of electricity directly to work is AC motor.
Q:How do AC motors keep in the same direction?
As for the synchronous motor, the principle of some trouble, is the basic rotor asynchronous motor into a rotor like DC motor. In the start into asynchronous start, start to rotor power into sync, oh, forgot to tell you that the speed of the motor rotating magnetic field than low speed asynchronous call motor, synchronous motor is the same, the speed of the rotating magnetic field is synchronous speed.
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:How do I change the speed of the motor?
There are several schemes. The 1. is to change the ratio of the mechanical driving wheel and driven wheel driven by the motor. The 2. is to use mechanical transmission to change the speed of the motor. 3. is to use electronic governor to change the speed of the motor. As for which scheme to use, it depends on your environment.
Q:AC motor stator winding does not turn, why the back EMF?
According to the electromagnetic law, when the magnetic field changes, the nearby conductor will produce an induced electromotive force, which is in accordance with Faraday's law and Lenz's law, and the original voltage at the opposite end of the coil is reversed. This voltage is the back electromotive force.
Q:What is the maximum speed of a three-phase AC motor?
Level two is close to 3000 rpm, does not include ultra high speed, ultra high speed has 6000
Q:Is the 380V single-phase AC motor the same as that of the 220V AC motor?
First of all, we should understand the meaning of alternating current, that is, the line of fire. There are four lines in the alternating current power supply 380V line, one of which is the zero line. Suppose that A, B, C [phase line], D [zero line], referred to as "three-phase four wire", in the three-phase any one phase line and D line [zero line] combination is referred to as "single-phase second-line"". Three-phase four wire power also referred to as "380V", also referred to as the single-phase two-wire 220V electricity; if it is 380V should be called the motor three-phase AC motor, if 220V motor can be called single-phase AC motor, the motor wiring is of course quite different. If the three-phase AC motor is not in phase (or bad), it can not work. If the single-phase AC motor is wrongly connected to the 380V, the second phase is very dangerous, and the motor will be burned immediately.
Q:What's the difference between direct current motor and AC motor?
A direct current motor is a magnetic field that does not move; a conductor moves in a magnetic field; an alternating current motor rotates in a magnetic field, and the conductor does not moveDC motor consists of stator winding and rotor winding of stator winding. The magnetic field is produced. When the direct current. The stator windings produce fixed polarity magnetic field. The rotor energizing force in the magnetic field. So the rotor in the magnetic field force is rotating. The DC motor structure is complicated. The cost is high.
Q:The difference and advantage between DC motor and AC motor
Alternating current dynamo:Advantages: 1.. Simple structure2. low manufacturing costs, 3. maintenance, simple economy.Disadvantages: can not speed up their own, you need to use frequency conversion equipment to achieve speed changes.
Q:How do I know whether the motor is a direct current motor or an AC motor?
You didn't know when you bought itYou can have a look at the nominal voltage on the nameplateDC is DC, AC is communication

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