ABB High Voltage AC Motor

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Q:An AC motor is running at 90% full load rating continuously. is it ok or need to upgrade to higher capacity?
Running at 90% load should be fine. If you upgrade to a higher capacity, the motor will likely be operating at a less efficient load point, wasting energy and costing more to operate.
Q:Are there Unordinary AC motors out there (PART2)?
The equation you have for power is the power for the specific operation point (torque and speed). Peak torque is the torque the motor can produce for a relatively short time. (The motor would overheat and be damaged if peak torque was sustained.) Continuous torque is the torque the motor can produce constantly without overheating. Also the torque vs.speed graph for a typical motor probably has a substantial region where it sloped downward. In other words, as you increase speed the available torque goes down.
Q:I need an Ebook on AC servo motors?
An integral feedback device (resolver) or devices (encoder and tachometer) are either incorporated within the servo motor or are remotely mounted, often on the load itself. These provide the servo motor's position and velocity feedback that the controller compares to its programmed motion profile and uses to alter its velocity signal.
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:Are dc motors more common than ac motors?
If you include electronically commutated DC motors and stepper motors, in the home or office usually yes, as HDDs have one, most optical drives two to three, each PC type fan is one. A floppy drive has two motors. VCRs usually have 3 or more motors (I remember when VCRs boasted about how many motors they had). Kitchen appliances usually have AC motors. Mixers and blenders usually have universal type motors. HVAC usually uses AC motors, but modern A/C compressors and circulation fans could be computer controlled DC PM or electronically commutated motors. Hand held coded power tools are usually universal, fixed tools are usually AC motors. Cordless tools usually use PM DC motors. Toys use PM DC motors usually.
Q:How can I slow down an AC motor and can it mount vertical?
There are ways to force the speed of an A/C motor, but only works with certain motor types. With A/C motors it's all about the windings, number of them, sequence, and power frequency. If you built a control circuit to generate a 30 cycle supply for example the motor would run half as fast as being powered by 60 cycles. You may be best to use a reducer, gearing that changes the input by a specific ratio to the output.
Q:Can i use an AC drill motor as a generator?
No. A drill motor is a series wound motor. That is, it has no permanent magnets; the stator magnets are actually electromagnets, and they are arranged in series (via brushes and commutator) with the armature, thus: phase --- stator winding --- armature --- stator winding --- neutral If the supply current is reversed, both the stator and armature magnetic fields will reverse together; so the motor will continue to turn in the same direction irrespective of current flow. This means that a series wound motor can run on AC or DC; and unlike any other kind of AC motor, it is not affected by the frequency of the AC supply. (The reversing switch works by swapping over just the connections to the brushes, and hence the armature; so now the armature will turn in the opposite direction.) The magnetic attraction and repulsion are strongest when the motor is at rest, hence this type of motor is preferred where starting torque is essential. If you still wanted to use it as a generator, you would have to modify the wiring rather severely (to disconnect the armature and stator circuits) and you would need to supply an external excitation current to one set of windings. Finally, the voltage you would get out of it would depend on speed and excitation supply; it wouldn't just be equal to the intended supply voltage, especially after you've mucked about with it.
Q:What is a M/C Tool rating? AC induction motor?
M/C probably means metal cutting. Since machine tool manufacturers buy large quantities of motors, motor manufacturers design motors for specific machine tool applications rather than offering only general purpose motors. Without documentation from the manufacturer, there is probably no way to determine for sure how your motor differs from a standard, general purpose motor with similar nameplate data.
Q:building a motor?
An alternator is not a DC motor - it is wound to produce alternating current (thus the name) which is rectified by diodes on the case to make DC. Winding a DC motor/generator is not a simple task requiring multiple segments and a commutator to collect the segments in detail. You would be much better off just buying one, perhaps used, than spending your time trying to build something with reliable bearings and speed.
Q:AC electric motor Question?
that is 100 times smaller motor than what you have in mind. 1HP=746W=0.746kW 0.55kW is about 3/4 HP

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