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Results tagged with induction-motor
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user 120094
Induction motors are alternating current motors with rotors that are energized by induction. They are available with power ratings ranging from about 1/500 Hp (1.5 W) to 30,000 Hp (22MW). They are the dominant type of AC motor used in most of that power range. Squirrel-cage motors are, by far, the dominant type of induction motor.
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Vector Control in Induction Motors
Can vector control in induction motors be considered as power factor correction ?
From my researchs, it seemed to me angle between rotor and stator flux is 90 degree when load is purely resistive (po …
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Vector Control & Slip
I know slip in induction motor determine the current and torque but the point I want to ask, when controlling with vector control it is said stator and rotor flux is always kept with 90 degrees apart …
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Braking methods for induction motors
When I search on the web, I see three types of electrical braking exist for induction motors:
Regenerative
Dynamic
Plugging
Regenerative is said to be possible when rotor speed is higher than synchr …
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Braking Methods of Induction Motor in VFD
As you know, we can stop an induction motor by plugging or regenerative braking. What I'd like to know is that when controlling induction motor with VFD, which braking way VFD uses? It seems to me alw …
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Relationship of Slip and Angle Between Rotor and Stator Flux for Induction Motor
I know how slip and flux angle individually affect torque of induction motors but I can't understand the relationship between slip and flux angle in terms of torque. Do they both have different effect …
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Torque, Current and Voltage Relationship in Induction Motor
In induction motor, Torque is proportional to square of applied stator voltage (I agree that) but some source says torque is proportional to current. For me something proportional to square of volt sh …
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Torque and Flux Current
It is said that vector sum of flux and torque current equal to total current drawn by the motor but there are also some currents flowing due to copper losses and rotor leakage inductance. In my opinio …
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Speed Current Relationship in İnduction Motors
It is said that speed of an induction motor depends on its frequency and torque depends on current. But I will explain what i cant understand here.
Let’s think an induction motor runs with constant …
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Rotor Current and Torque Producing Current in Induction Motor
Is rotor current of an Induction motor always same with torque producing current?
In torque equation of Induction motor, there is also one factor called rotor power factor. if rotor current and torque …
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Maximum Voltage That Can be Applied to a Motor
I was reading about 87Hz technique. I saw we can configure the drive for a motor 400Y/230D as 400V /87hz. I know v/hz ratio should be kept constant and when we configure drive as 400V and 87 Hz and wi …
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