ABB High Voltage AC Motor

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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.
Q:What is the size of DC motor and AC motor under the same power?
The output power is the same, and the DC motor is small.. The power consumption is the same as that of AC motor.
Q:Is the stepping motor an alternating current motor or a direct current motor?
The stepping motor is an open loop control element which transforms the electric pulse signal into angular displacement or linear displacement. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed.
Q:How to control the speed of AC motor
The method of increasing rotor circuit startup is applicable to wound rotor, deep groove rotor and double cage rotor. For squirrel cage rotors, this method cannot be used.When increasing the rotor resistance of an induction motor, the maximum torque of the motor will not be affected, but the maximum torque will occur, and the motor torque slip curve will be compressed along the slip axis. As the motor curve shows that the slip ratio rises first and then decreases, the starting torque of the motor will increase. But its numerical value is affected by the maximum torque of the motor.The starting modes of single-phase asynchronous motor include capacitor start, resistance start, PTC start and so on.
Q:The difference between a DC motor and an AC motor for a garbage collector
Germany laolunshi food waste processor motor is AC motor. It is dedicated to food waste disposal, LKMS stainless steel motor, never rust, permanent quality. Low operating noise. Oilless bearings, maintenance free for life
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:Which motor has a great torque when the motor is under DC at the same power?
If the DC / AC motors operate under the rated 800W output power, there is no doubt that, as long as their speed is the same, the output torque is the same, which is a static consideration.
Q:The similarities and differences between DC brushless motor and AC motor
The stator windings of Brushless DC motor is connected in star, his permanent magnet rotor is made and a rotor position sensor for detecting the rotor position feedback to the controller, the controller is a DC power supply, according to the position sensor signal feedback respectively so that the stator winding is energized, the rotating magnetic field, the mechanical characteristics of Brushless DC the motor is hard.
Q:The working principle of AC motor!
The single-phase AC motor has only one winding, and the rotor is squirrel cage. When a single-phase sinusoidal current through the stator windings, the motor generates an alternating magnetic field, the magnetic field strength and direction for sinusoidal variation with time, but the spatial position is fixed, so it is also called the magnetic field is alternating pulsating magnetic field. The alternating pulsating magnetic field can be divided into two with the same speed, the rotation direction of the rotating magnetic field are on the contrary, when the rotor is at rest, the two rotating magnetic field generating torque of two equal and opposite in the rotor, the synthetic torque is zero, so the motor rotation. When we use a force of the motor rotation to one direction (e.g., clockwise), the rotor and the clockwise rotation direction of the rotating magnetic field between the motion of cutting magnetic lines becomes smaller; the rotor and the counterclockwise rotation direction of the rotating magnetic field between the motion of cutting magnetic lines becomes large. Thus, the balance is broken, and the total electromagnetic torque generated by the rotor will no longer be zero, and the rotor will rotate in the direction of the push.
Q:Can the welding line of AC welding machine be dead?
The welding line of AC welding machine is the two line of electric welding machine.The welding wire caused by electric shock accidents, because the two line is low voltage (no-load voltage generally 50 - 90V), people understand the causes of electric shock, often mistakenly think that the welding line two times is "safe", leading to accidents causing death two line not uncommon a shipyard is a young female welder, welding is the cabin, the cabin due to high temperature and poor ventilation, body sweating, canvas overalls and leather gloves are wet. When replacing the electrode holder when touched, because of spasm fall backward, falling out of the neck in the holder, failed to cause electric shock accident died after death. The accident tells us that the two line voltage of the welder is low, but it is enough to kill.

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