ABB High Voltage AC Motor

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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 are the advantages and disadvantages of AC and DC motors?
The DC motor is easier to control than the AC motor. It can be applied to a wide range of speed regulation. It can be used in power braking, but it is more complex and more complicated than the maintenance of AC motors.
Q:Panasonic servo motor A4 series, AC synchronous motor or AC asynchronous motor?
Induction motors are also called induction motors. The electromagnetic fields on the rotor are induced by the stator magnetic field. The rotor of the synchronous motor must have its own magnetic field. The speed of the asynchronous motor varies slightly with the load, and this speed is lower than the speed of the stator magnetic field, so it is called asynchronous motor. The speed of the synchronous motor is strictly rotating according to the magnetic field speed of the stator, so it is called synchronous motor. Asynchronous motors can be activated directly. The synchronous motor needs a special starting device or starting winding, so the manufacturing process is complex and the cost is high. Asynchronous motors are generally used as motors. Synchronous motors are generally used as generators and as compensation machines.The first point is that asynchronous motors are for motors only, and are rarely used as generators. Synchronous motors are used to generate electricity. The principle of asynchronous motor is mainly in the stator through the 3 cross flow, so that it produces a rotating magnetic field, the speed is N0, that is synchronous speed. Different poles of the logarithm P, at the same frequency of f=50Hz alternating current, will produce different N0, n0=60f/p. The working principle is as follows: 3 phase symmetrical windings symmetrical 3 phase current to produce a rotating magnetic field, the magnetic field line cutting rotor windings, according to the principle of electromagnetic induction, the production of E and I in the rotor winding, rotor winding by electromagnetic force in a magnetic field, the electromagnetic torque, the rotor rotation, the rotor output mechanical energy. Driven by mechanical load rotation.
Q:The difference between induction motor and induction motor
Three phase asynchronous motor as three-phase motor for motor operation. Three phase asynchronous motor rotor speed below the speed of a rotating magnetic field, the rotor winding magnetic field between the relative motion and the induced electromotive force and current, and electromagnetic torque and magnetic field interaction, realize the energy transformation. Compared with the single-phase asynchronous motor, the three-phase asynchronous motor has good performance and saves various materials. According to the structure of the rotor, the three-phase asynchronous motor can be divided into two kinds of cage and winding. The squirrel cage rotor asynchronous motor is widely used because of its simple structure, reliable operation, light weight and cheap price. Its main disadvantage is the difficulty of speed regulation. Winding three-phase asynchronous motor rotor and stator is also provided with three-phase winding, and through the slip ring, brush and external rheostat connection. Adjusting rheostat resistance can improve the starting performance of motor and adjust the speed of motor
Q:Is the motor in the inverter air conditioner a direct current motor?
Frequency conversion only for AC motors.The DC motor controls its voltage and changes its speed. Frequency independent. In one case, the frequency of direct current is 0. Therefore, the use of frequency conversion is simply can not control the DC motor.AC motors can vary the speed by changing their frequency, but they can not be controlled by changing the voltage. There is only one result of changing the voltage, and the motor must be destroyed.
Q:AC motor control chip
This motor is single-phase or three-phase, ah, second power, how big, these need to know.If it is a small single-phase or three-phase motor, AC motor can be controlled by solid-state relay or by small AC contactor control relay, if it is large, it is best to use the second scheme just said. It is so simple. What if there are special requirements that is another, I can talk.
Q:AC motor speed regulator
Now is the best performance of AC motor speed controller frequency converter, it is by changing the power supply frequency of the motor to achieve speed, speed range, energy saving, but also can slow down growth, and can be used as motor starter, but the price is relatively high.
Q:Relation of voltage, speed, voltage and torque of single phase AC motor
The voltage and torque is constant (c= C T= square poles P * * * the number of turns of the stator voltage of U / L) * f (frequency rotor resistance + leakage resistance)The voltage is low rotational speed torque, output torque of the motor load torque is not greater than the operation of what the problem is, if the motor in full load and overload operation will reduce the service life of the motor, the motor blocking words soon consumed.If the economy allows, you can use single-phase frequency conversion speed control, variable frequency speed regulation, rated frequency speed regulation is constant torque output.
Q:What is AC motor?
AC motor has become the most common motor because of the great development of AC power system.Compared to the AC motor and DC motor, because there is no commutator (see DC motor commutation), therefore has the advantages of simple structure, convenient manufacture, relatively strong, easy to make high speed motor, high voltage, high current, large capacity. The coverage of AC motor power greatly, from a few watts to several 101000 watts, even millions of kilowatts. In the early 1980s, the largest turbo generator reached 1 million 500 thousand kilowatts.AC motors are usually divided into AC generators, AC motors and synchronous regulators according to their functions. Due to the reversibility of the working state of the motor (see the motor), the same motor can be used as a generator and an electric motor. It is not very precise to divide the motor into generator and motor, but some motors are mainly used as generator, some motors are mainly motor operated.
Q:Why is the AC motor connected to the capacitor?
The purpose of the AC motor capacitor is to separate the single-phase alternating current from another phase alternating current of 90 degrees by the phase shift of the capacitor. The two alternating current into two groups or four groups of motor winding, forming a rotating magnetic field inside the motor rotating magnetic field induced current in the rotor, the induced current magnetic field and rotating magnetic field in the opposite direction, by rotating magnetic field into the rotating push and pull.

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