Siemens Reducer

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Q:When the AC motor is burnt out, is the stator burnt out or the rotor? What about DC motors?
It is a mechanical device used to realize the conversion of mechanical energy and alternating current energy. 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.
Q:Is permanent magnet synchronous motor AC servo motor?
First of all, the classification of motor: servo motor is divided into AC servo and DC servo, in which AC servo and synchronous and asynchronous points. Permanent magnet synchronous motor (PMSM) is a kind of synchronous AC servo motor.
Q:The actual power consumed by a three-phase AC motor is equal to line voltage * line current. How do you explain that?
For the three-phase motor whether delta or star connection, is the P= root 3*380v*I line *COS, line voltage 380V means, the other is right, you do not know where it comes from the formula. If you do not take the appropriate 3, that is the single phase load.
Q:What is the maximum speed of a three-phase AC motor?
The fastest is the 2 stage motor, near 3000 revolutions per minute
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:Why is the rotor of an AC motor neither magnetic nor can it rotate?
The rotor core has a number of grooves, groove cast aluminum, cast and short circuit ring in both ends of the rotor, stator windings of electric flux generated cutting aluminum rotor coil bar form the short-circuit current, the rotor and the stator rotating magnetic field and magnetic field interaction, is driven to rotate.
Q:Is the stepping motor an alternating current motor or a direct current motor?
Stepper motor is an induction motor, its working principle is the use of electronic circuit, the DC power supply variable components, multi-phase timing control current this current stepper motor power supply, stepper motor can work normally, the power supply for the stepper motor driver is divided into the multi phase sequence controller.
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:Relation of voltage, speed, voltage and torque of single phase AC motor
Motor power: P=1.732 * U * I * cos PhiMotor torque: T=9549 * P/n;Motor speed: n=60f/p, P for the motor pole count, such as four motors p=2;Note: when the frequency reaches 50Hz, the motor reaches the rated power, and then increases the frequency, the power will not increase, and will maintain the rated power.The motor torque is less than 50Hz, is proportional to the variation with frequency of F; when the frequency reaches 50Hz, the motor reaches the maximum output power is rated power; if the frequency of F in 50Hz and then continue to increase, the output torque is inversely proportional to the frequency change, because its output power is so big, you have to continue to increase the frequency of F, then the formula set in the above analysis, the torque is obviously reduced.
Q:Why is DC motor speed regulating better than AC?
The magnetic field of an AC motor is strongly coupled and time-varying, while the external conditions change and the speed changes as well, and it changes.

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