Questions tagged [ac-motor]
For questions about electric motors driven by alternating current (AC).
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Coil winding direction in a shaded-pole motor (4-pole)
I have rewound a shaded-pole motor (4-pole).
It's wound around the stator in a clockwise motion and around each coil in a counter clockwise motion.
Is the winding being incorrect the reason why the ...
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Did I wire this AC motor properly?
I disassembled a drill to replace the chuck and when putting it back together it seems to be short-circuiting. I have doubled check the cables but they seem to be ok, so I'm afraid I may have wired it ...
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Pump motor fails to start when connected to a low frequency inverter via a long wire [closed]
I've been struggling with a submersible pump showing unreliable behaviour when connected through a long cable to a low frequency inverter.
The pump is used only once a week to fill up 3 5000 L tanks. ...
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How does this single phase induction motor run without capacitor?
The motor of the picture has no facility to connect capacitor. The phase and neutral is directly connected to winding. It works fine on 220 volt 50 Hz AC. Although performance get poor at 190 volts.
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What type of single-phase motors can I control using a frequency inverter?
I have a single phase fan, and I want to control the speed of this fan so it occurred to me to design a VFD for this purpose, but I was researching more about single phase AC motors and I read that ...
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Help with (very) odd single phase motor wiring
I think this is my first post here.
I have little knowledge on AC motors, and this machine I am servicing (an old Balltrap/Clay target shooting machine) left me baffled. The below diagram is a ...
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Do modern variable frequency drives perform power factor correction?
Do modern variable frequency drives (VFDs) perform power factor correction?
I can't find info to see whether VFDs do power factor correction. If they do, how good are they?
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AC motor speed control circuit
I connected a circuit found on the internet:
Results:
When the AC motor is connected to the closed circuit, it did turn on, but the speed of the motor keeps increasing on its own without turning off, ...
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Wish to understand an AC motor electrical diagram schematic to safely connect a capacitor and switch
I have this motor (Samsung Electronics SMV-260UA) diagram and a 10 μF capacitor from a salvaged microwave:
I've experimented with supplying power, but I need start up current to kick the motor into ...
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How to control the speed of an AC motor with DC voltage programmatically?
What I want to achieve
To control the speed of an AC motor with DC voltage programmatically with Raspberry Pi.
I asked on Raspberry Pi.SE and was told it was an EE question, so I'm asking here.
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How can I properly convert two phase AC supply to three phase using capacitors?
I have an AC 3 phase delta connected submersible induction motor with specifications 440 V, 10.5 A, 5 HP, 2800 RPM which is already fitted with a 3 phase PF correcting capacitor in parallel. The ...
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Speed controlling of AC motor with dimmer
I have a fan which has asynchronous motor. It's features are that 230V AC, 50 Hz, 50W. I want to control it's speed using AC dimmer. I can control the brightness of light bulb with my dimmer circuit. ...
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Why do BLDC motors require feedback, whereas AC motors do not?
I was delving into the functional difference between 3-phase AC motors and 3-phase BLDC motors, and was wondering what would happen if a BLDC motor was run without feedback to its controller.
I found ...
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Can we run an induction motor by sequentially applying DC voltage to the windings of stator?
We know that in induction motors, 3-phase AC input is applied to 3 windings of stator in order to generate changing magnetic flux in the rotor. What would happen if we apply 3 DC voltages ...
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Does current have to return to its source?
I am not the most knowledgeable when it comes to electricity, so apologies if my questions lacks necessary information that is needed to get a good answer.
I work with 3 phase electric motors, and I ...
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