YVF(E)Three一phase Asychronous Motor for Braking

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Overview


YVF(E) three-phase asychronous motor for brakingv is provided with an electromagnetic brake set between the rear cover of the primary motor and axial-flow fan
This kind of motor is widely applied to the occasions requiring for speed regulation, rapid stop and accurate positioning.

Features


Variable-frequency regulation in a broad range;
High efficiency, small starting current and big starting torque;
Capable of rapid braking and accurate positioning. It is suitable for frequent starting and braking

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Q:How large AC contactor and thermal relay should be used for the motor of 3KW? There are steps to calculate better.
1, Y-100L-4 type 3KW motor rated current is 6.4A, can also be obtained by formula: (power factor cos Phi about 0.7)I = P/ (root 3 * U * cos (3000/) = 1.732 x 380 x 0.7) = 6.5 (A)2 "AC contactor selection: general and motor current is available, but in actual use, the contact is easy to burn, choose more than the motor current double the more durable, should choose CJX2-1210 (12A).".3 "thermal relay setting current: choose regulating current range of 5 ~ 9A thermal relay, the setting current is 1.1 times the rated current of the motor (7A).
Q:Is the motor in the inverter air conditioner a direct current motor?
The motor in the inverter air conditioner is certainly an AC motor because it is powered by frequency conversion.The so-called frequency conversion refers to the purpose of regulating speed by regulating the frequency of power supply.Since the frequency is adjustable, it indicates that the direction of the current varies periodically.Some series of AC motors can also be used as DC motors, but they are not normally used in air conditioners.
Q:What does permanent magnet brushless motor and brushless DC motor mean?
Permanent magnet brushless motor is usually divided into permanent magnet AC brushless motor and permanent magnet brushless DC motor. Permanent magnet brushless AC motor usually refers to AC synchronous motor. The permanent magnet brushless DC motor can be divided into two kinds of sinusoidal permanent magnet synchronous motor and brushless DC motor.
Q:Motor PWM how to speed?
PWM speed control principle of AC motor, mainly through the AC signal of a variable frequency modulation, a high frequency square wave driving voltage, resulting in a change with the frequency modulation signal driving current in the motor armature. Thus, the AC motor armature is driven by this current to produce a rotating magnetic field in accordance with the frequency of the modulation signal, so that the rotation speed of the motor rotor is changed. It is modulated by fm.
Q:Alternating current motor commutation
A sinusoidal voltage with a lead of 90 degrees or a phase of 90 degrees after a large capacitor is generatedAnd the original voltage can form a set of voltage difference of 90 degrees phase,.2 group voltage together can control its directionIf it's 90 degrees ahead, it's turning right. Then it will be reversed after 90 degrees
Q:AC servo motor why drive?
In addition, the servo controller does not have the ability of logic control, if need servo motor first slow turn, then turn fast, then to stop somewhere and then reverse, and so on, these signals are more responsible for the upper controller of the servo controller, such as PLC, such as motion controller.
Q:Is the 380V single-phase AC motor the same as that of the 220V AC motor?
The single-phase motor has two windings, that is, the starting winding and the running winding. The two windings are 90 degrees apart in space. On a starting winding connected in series with a large capacity capacitor, when running and starting winding winding by single-phase alternating current, because the capacitor make the starting current in the winding in time than the current running winding advance angle of 90 degrees, the first to reach the maximum.
Q:How to realize constant power or constant torque output of three-phase AC motor?
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:How the AC motor with DC power transfer
Different manufacturers use different motors for fans.If you are using a series or shunt motor, DC or AC or.If you are using an asynchronous motor, and there is no buck, it will burn, and will not brake.
Q:Why does the AC motor turn?Do I feel that the coil is not in a steady state?
When three to three alternating current in the stator winding through the symmetry, it produced a synchronous speed n1 along the stator and rotor roundfor space in a clockwise rotation of the rotating magnetic field. Due to the rotation speed of rotating magnetic field to N1, the beginning of the rotor conductors is static, so the rotor conductor will cut the stator rotation the magnetic field induced electromotive force (EMF direction dingze judge with the right hand).

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