Questions tagged [induction-motor]
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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Tips on improving induction motor performance?
I decided to try and create a 4-pole 2-phase induction motor for learning purposes. After taking a class in the principles of electromechanical energy conversion (a few years ago) I was dissatisfied ...
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Three phase motor with 3 sets of connections. Star, delta, and something else?
What's going on with this motor ? It's not simply wired into a star/delta starter. There's a 3rd option I'm not familiar with. The legend below and to the left shows Star/Star-Star/Delta.
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What parameters give unlinear torque model of induction motor?
I want to realize factors which give nonlinear model of torque toward speed with power consumption in induction motor.
I tried find math model induction motor. But usually, I had same charts:
As we ...
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When increasing the frequency of an induction motor can't I just add a capacitor to maintain torque instead of increasing the voltage?
When increasing the speed of an induction motor if one wants to maintain the same torque, the voltage has to be increased at the same proportion as the frequency of the AC supply.
This is because the ...
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Why does inverter malfunctions when PCB is placed near metal enclosure?
I have designed a three phase inverter to drive a Synchronous motor. The motor operates fine when I place the PCB outside of the Aluminum enclosure of the motor. The voltage and frequency increases ...
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magnetic field of stator when load increases in an induction motor
What happens to the magnetic field of the stator when the load increases in an induction motor? I understand that due to the higher torque demanded the speed of the rotor will decrease. So the slip ...
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Spinning single phase induction motor while having no power
I have a single phase induction motor connecting to a spindle.
The motor is connected to a electronic speed controller and I believe it has a series capacitor.
If spindle are to be spin while motor ...
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Do eddy currents in a rotor core of an induction motor create torque proportional to the coil current of a squirrel cage?
In a rotor of an induction motor, the core plates and wire coil conductors have non-zero thicknesses. Therefore, eddy currents non-zero too. And they approximately proportional to the coil current of ...
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Why DC supply voltage is increasing when inverter is connected to powerful three phase induction motor?
If I connect my inverter to a resistive load or small inductive load the DC supply voltage (in my application it is 56 V) stays constant. However, if a powerful induction motor is connected, the DC ...
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ESP32 crashes when starting a 3 phase induction motor through a star delta starter
Circuit Details:
An esp32 driving 2 relays(5V SPDT HL JQC-3FC(T73)DC5V) via a darlington array(ULN2803A). The relays are connected to the start, stop buttons on a star-delta motor starter. The motor ...
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How do I power this 400V motor from 230V? [closed]
I just bought a lathe with a motor that used to be connected to 3 phase 400V. I am trying to power it using single phase 230V domestic mains. I understand that I can use a VFD to provide the extra ...
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Equivalent Circuit of Induction Motor
To find the equivalent circuit of the rotor side of an induction motor, the resistance and the reactance changes to ensure that the current in the rotor remains the same, whilst removing the slip term ...
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How can I choose the right stabilizer for a 3-phase 415 V supply system?
I have a question about how to select the right capacity of voltage stabilizer for a 3-phase supply system.
That system has the following type of load and capacity:
Two 1 hp 3-phase motor, 440 VAC (...
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PSC motor auxiliary winding current at full speed
In articles, e.g. here, I often find this statement:
In an auxiliary winding, a counter EMF is produced as the speed of the motor increases, and this EMF will limit the current that passes through ...
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0 V across motor capacitor terminals, but resistance is 20 Ω. Is the capacitor dead?
It is a 36 μF, 440 VAC, 50 Hz rated motor running capacitor, used in a single-phase motor. AC source is 240 V, 50 Hz.
The motor has stopping working. I want to know whether it is due to a faulty ...
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