YTDVF Variable一Frequency Three一Phase Asynchronous Motor for Tower Crane Amplitude Mechanism

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Overview


the motor is a variable-frequency, three-phase asynchronous motor exclusively designed for the tower cranes and other similar amplitude mechanisms. It is applied to the
amplitude mechanisms in very harsh working conditions such as construction site or open pit quarry

Features

With introduction of spline output shat, it has good mechanical bearing capacity and excellent assembly performance;
Motor installation interface has the same size with original tower crane (POITAIN series), making it easier for switching and upgrading of old products

The motor is a variable-frequency motor featuring a wide range of speed regulation, small starting current, big starting torque and overload ability;
A thermal protection component is buried into the in stator winding and wired into the motor temperature protection control system, making motor more safer and reliable;
New brake (national utility model ZL201101881732, ZL201120188164.3) with higher safety and reliability this reduces the maintenance time and cost compact structure, small volume, lightweight as well as high reliability, so it can be braked quickly and positioned accurately. It is suitable for frequent starting and raking


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Q:ac motor to ac generator?
The DC motor has a fastened magnetic field created by potential of the two an enduring magnet or by potential of DC contemporary flowing by way of a field winding. The armature has a winding that rotates interior the fastened field. A DC contemporary utilized to the armature winding will result interior the armature rotating to the component the place the magnetic field of the armature is aligned with the fastened field. At this component the armature might end, by no potential to teach anymore. So there's a gadget referred to as a commutator on the armature shaft that's used to prepare contemporary to the armature winding AND to opposite the path of contemporary pass in the process the armature on the component of rotation the place the armature might otherwise end. as a result while the armature approaches the component of field alignment while it would end, the present path is without notice reversed by potential of the commutator, and the fields are bucking one yet another and the motor keeps turning, and this technique repeats itself consistently. The DC motor will enhance right into a DC generator despite if this is pushed by potential of an exterior source of mechanical skill. If the commutator function have been faraway from the DC motor and altered with slip jewelry that habit contemporary to the rotating winding with out reversing the path of contemporary pass, and if the motor have been pushed be an exterior skill source, you at present have an AC generator. The voltage and contemporary generated as a result will opposite path each 0.5 turn of the armature because of the fact the windings are crossing a magnetic field of opposite polarity.
Q:What does the D axis and the Q axis mean for AC induction motors?
The D axis and the Q axis represent the direct axis and communicate. By decomposing the stator current into the direct axis component and the quadrature axis component, the armature responses are calculated respectively so as to better control the stator currents.In permanent magnet synchronous motor control, in order to obtain similar control characteristics of DC motor,
Q:Is it possible to run a 2kw generator alternator by an AC motor which is much smaller in electricity consumption?
Yes, but you can only load the generator with something less than 800 watts. Remember, there is no such thing as a free lunch, and you can't get power for nothing...well actually you (sort of) can with a solar collector.
Q:theory of operation of synchronous motors?
In a synchronous AC motor a current is supplied onto the rotor. This then creates a magnetic field which, through magnetic interaction, links to the rotating magnetic field in the stator which in turn causes the rotor to turn. It is called synchronous because at steady state the speed of the rotor is the same as the speed of the rotating magnetic field in the stator. The alternative kind of electric motor is an induction motor, where the current in the rotor is generated by induction - similar to a transformer. Induction motors are far more common because they are simpler, but synchronous motors have certain advantages and are used in some applications.
Q:Question about motors??? (please help)?
1) DC motors have a commutator whilst AC motors do not. 2). The torque generated by current in the stator winding reacting with the magnetic field produced by current in the rotor. In the induction motor the rotor current is driven by voltage induced by the field produced by the stator winding currents - hence the name induction motor.
Q:How are electric generators and motors not similar?
Depends on what type of motor you are referring to. If you are referring to an AC motor or generator, a synchronous motor and a generator are essentially identical in physical construction, with the only difference being how you use them. Other types of motors will not be. An induction motor, for example, offers no way to excite the field if you were to use it as a generator because there is no connection point to the squirrel cage windings in the induction motor. A servo motor would be possible, but you would not be able to control the voltage if you used it as a generator because the field flux is fixed. A DC motor and generator may be identical if the DC motor has a stator winding. But if the stator is a permanent magnet, as stated before, the field is fixed, and there would be no method of controlling voltage.
Q:How to make an AC motor run on DC power such as a car battery?
I'm not sure about the other stuff but I have an idea for a throttle. Hook a potentiometer up in series with the motor, power source. Controlling it on the ground side may be better so you can have a big thick cable from the power to the motor.
Q:After puting in a new fan motor in the condenser unit on my ac.. The motor is seizing up.?
You don't mention the capacitor which should be replaced, also. Inspect the fan blades, like the answer says above, to see if they're hitting the sides, out of balance, which will stress the motor shaft. Look at the wiring connections for any frayed insulation, bad terminals. You will get a high amp reading if you have them due to increased resistance. You might have a low voltage issue at the contactor. You can get bad motor out of the box, so check the play up and down of the shaft and free rotation of it before you pay for the next one.
Q:Why are DC motors more powerful than AC motors of the same power?
Because the motor armature circuit resistance and inductance are small, and the rotating body has certain mechanical inertia, so when the motor is switched on, starting the beginning of the armature speed and anti electromotive force of the corresponding small starting current, large. Up to 15~20 times the rated current. This current will disturb the power grid, the unit will be subjected to mechanical shocks, and the commutator will spark. Therefore, the direct closing start is only applicable to motors with power not greater than 4 kW (starting current is 6~8 times the rated current).
Q:Compare and contrast the AC generator and the DC electric motor?
D.c motor converts electrical energy into mechanical energy while A.c generator coverts mechanical energy into electrical energy. D.C motor works on the principal of left hand rule while A.C generator works on the principle of faraday s law of electromagnet induction. Current carrying coil rotates b/w the poles of magnet.. A.c: simple coil rotates b/w the poles of the magnet

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