ABB High Voltage AC Motor

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Q:What's the difference between a three-phase asynchronous motor and an ordinary one?
Ordinary motor motor and variable frequency motor of variable frequency motor, it is called the main appearance is different from the ordinary motor frequency conversion motor with forced cooling centrifugal fan, which ensures good motor cooling in low frequency and high frequency, frequency range also see nameplate motor internal structure can adapt to the specific operation of high frequency operation. Ordinary motors are generally allowed to operate under or less than 50hz.
Q:Can any AC motor 220 and 380V control positive inversion? What are the conditions?
Single phase motor has two coils, three heads, two ends of the coil and connected together to a head (public side), the starting coil of a head, a head coil operation, starting capacitor connected between the operating coil and start coil, the power supply is connected in common end and operation coil when the motor is transferred, connected to the power supply public end and start winding motor reversal.
Q:What is the influence on the motor when AC motor is connected to direct current?.
In the circuit of the home soybean milk machine, there is a rectifier circuit, and the motor is not an AC motor in the sense of pure.48V inverter, which means to convert 48V DC to 220V AC. But you this inverter because it is driven by the inductive load, the nominal power to more than double. Because the household machine (beating) Soybean Milk time is very short, usually in less than 3 minutes, so the motor temperature is relatively high, but can try 2 48V battery series 96V try, but first we must carefully look at the temperature rise of the motor.
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:Why are DC motors more powerful than AC motors of the same power?
In order to limit the starting current, a specially designed variable resistor is often inserted into the armature circuit. In the starting process, as the speed continues to rise, each segment resistance is shorted in time, so that the starting current is limited to a certain allowable value. The working principle and starting method of this kind of DC motor is called series resistance starting. It is very simple and easy to use. It is widely used in various medium and small DC motors. However, due to the large energy consumption during starting, it is not suitable for motors that are frequently started and medium and large DC motors. But for some special needs, for example, city buses are often started. In order to simplify equipment, reduce weight and facilitate operation and maintenance, it is usually adopted serial resistance starting method.
Q:Can AC motors be converted into generators?
Another method is to replace the original rotor directly with the one or two pole permanent magnet. Note: the poles of the permanent magnet should be as close to the stator as possible, but they cannot be touched. Rotating the rotor (or permanent magnet rotor) can pass the stator around the output voltage, current. If the speed is increased, the voltage can be mentioned very high.
Q:Is the stepping motor an alternating current motor or a direct current motor?
Although the stepper motor has been widely used, but stepper motors can not be like ordinary DC motors, AC motors in the regular use. It must be composed of double ring pulse signal, power drive circuit and so on, and the control system can be used. Therefore, it is not easy to make good use of stepping motor. It involves many specialized knowledge, such as mechanical, electrical, electronic and computer. Stepping motor, as an actuator, is one of the key products of mechatronics. It is widely used in various automatic control systems. With the development of micro electronics and computer technology, the requirement of stepping motor is increasing day by day, and it is applied in every national economic field.
Q:AC servo motors generally choose synchronous or asynchronous?
This will be based on your purpose, such as CNC machine tools feed shaft, generally use AC synchronous servo motor, spindle general use AC asynchronous motor. The same power synchronous machine is much more expensive than the asynchronous machine. If it is common use, select synchronization
Q:How to realize constant power or constant torque output of three-phase AC motor?
Three phase asynchronous 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.
Q:Isn't the starting winding symmetrical? If it's symmetrical, it's also an alternating pulsating magnetic field, how can you drive the rotor?
1. did not start winding, the rotor twist of the hand is because you can start to a rotating direction of the rotor, so that the main winding can rotate in a direction that, as long as you manually start after the rotor can not stop, because the main winding rotor will provide energy.2. the starting winding is symmetric, also accounted for 1/2 circle, starting winding due to capacitor phase shifting function and produce, in the electric cycle and the main winding is 90 degrees (like 90 degrees in advance), such changes in the magnetic field generated by the magnetic field have successively, have a fixed rotation direction, thereby according to a rotation direction of the rotor, the motor does not start winding and does not move because the main winding is 180 degrees and polar conversion, the rotor can be considered both left forces can be considered to be the right power, so the rotor is buzzing motionless.

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