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Questions tagged [motor]

An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). There are many types of electric motors. If the specific type of motor is known, it is helpful to use or add a more specific tag, such as dc-motor, brushless-dc motor or induction-motor.

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0answers
7 views

2 NICE tubular motor connections with wind sensor

Hi, I have 2 NICE Era Mat T tubular motors, working togheter with the TTBUS RS232 protocol ( Cable (1) + Cable (3) GND ). Now I have installed the 4 buttons to open/close the blinds. Without the ...
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5answers
102 views

Proper name for “a switch-over time-delay relay”

I have a joystick wired to a relay that spins a motor either one way or the other way. The problem is that I need to enforce a small "dead-time" when the user pushes the joystick quickly from one ...
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0answers
38 views

Tradeoffs between brushed, brushless and induction motors

What are the tradeoffs associated with adopting brush-less, brushed and induction motors for designs? More specifically, if the goal is to design a servo, for example, how does the control circuitry ...
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2answers
100 views

Which one of these is the phase 1? [closed]

Which one of these is the phase 1? And why isn't there a neutral wire at all? The cable is Chinese. The device it powers is a 3-phase motor that powers hydraulics. I am sorry for asking this question ...
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1answer
251 views

Inconsistency Issues With Stepper Motor

I am attempting to get my stepper motor to rotate 90 degrees, stop for a second, and repeat these steps. Please note I am a beginner, but I have taken physics courses so I do understand most basic ...
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1answer
1k views

Need help reversing the rotation my motor

I'm pretty new at this. I was able to salvage the motor of a washing machine. How will I know if I can reverse the rotation of it? And how will I be able to reverse it if it does? Also how will I ...
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1answer
80 views

Tamper resistant induction actuator

How would one design an actuator with the following requirements: The actuator is completely isolated with no electrical contacts. Imagine a rotor encapsulated in sealed plastic cylinder. The rotor ...
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1answer
121 views

Will resistance of wire increase with age due to some effects?

Today I had an electrical problem at my home not yet resolved. I will explain the problem. The switch for water motor and switch for lamp are nearby in same board. When I turn ON the lamp switch, the ...
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1answer
100 views

Wiring a multi-speed motor from a tower fan

I am trying to fix a tower fan from a friend. He found out that the motor was working, but something on the circuit board wasn't. He then took apart the board from the motor without remembering which ...
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2answers
108 views

Dc Motor giving ac as well as dc voltage when used as generator

When I rotate the rod or the moving part of motor and probe its output through a multimeter (set on ac measuring) it shows around 0.50 volts. When I set the multimeter on dc measuring, it still shows ...
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2answers
121 views

How to accurately measure electric motor torque?

I'm currently doing an experiment on an AC motor to measure the torque output from a servo drive using fishing line wrapped around the servo shaft / gear while the other end is connected to a luggage ...
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3answers
193 views

How does one determine the type (AC v. DC) and operating voltage of small motors?

I've become fascinated by Rolling Ball Sculpture (RBS) and plan to start building my first one soon. Typically a RBS uses a low-voltage, low-RPM motor to carry the marbles to the top of the structure ...
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1answer
87 views

Measure the load on a servo very precisely?

I am trying to make a servo turn a dial. At certain points in the revolution, the dial will "stick" on certain points, where there is more resistance. I would like the servo to be able to very ...
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2answers
51 views

Parameters of the 3 phase geared induction motor

I have a 3 phase geared induction motor. The name plate is below image. I couldn't find any datasheet from internet. Explain me parameters that on nameplate for entering to VFD. I need to know Rated ...
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1answer
44 views

Arduino AC Motor Control and Automation? [on hold]

My question is about the automation of single phase AC motors. I am aware that I can purchase TRIAC controllers with manual knobs or even 0-10V control inputs. I am new to the world of AC ...
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2answers
31 views

In a shunt DC motor, how quickly after losing the field will the armature current increase to its V/R limit?

In a shunt DC motor, what are the sequence of events when the field current is lost? From what I understand the loss of the field current, and thus the field itself, will result in a decrease in back ...
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1answer
141 views

0 cogging, direct drive hub? [on hold]

I'm a motor noob researching how to design and build an electric motor from scratch for an electric kick scooter project. Before continuing my research, I need to decide on the best kind of motor for ...
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1answer
150 views

Generate measurable reverse torque with DC motor as a dynamometer

I am trying to use a KBRG 225D regen drive as a dynamometer to apply reverse torque in order to stress my test engine? I am wondering if anyone has experience or guidance? I am not sure how to measure ...
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1answer
224 views

Dual 50v DC boost converters in parallel?

I'm very new to electrical components, should I be on this website? I'm modifying an electric scooter to run at 50 volts as opposed to its rated 24 volts. The most I’ve seen the motor draw is 45 amp ...
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0answers
55 views

Driving a motor freezes Arduino

I am trying to drive a Carrera Digital car (brushless DC motor) using an Arduino and an L293D h-bridge motor driver. My schematic is the following: I have also connected an IMU (GY-521 MPU-6050) to ...
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1answer
58 views

AC Induction Motor Constant Speed Control without Tachometer

I want to run the AC induction Motor at a constant speed with LOAD also without Load. So I am controlling motor speed by TRIAC. I can control the motor speed, but my problem is:- I don't have a ...
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2answers
136 views

Three phase induction motor

If speed of rotating flux and actual speed of rotor is same then what will be the torque produced in three phase induction motor and why?
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1answer
40 views

DC motor and its weight can carry [closed]

I have D.C motor (36V, 450W) and battery (36V, 15Ah). I dont know much weight can my motor handle given that it already carrying lets say 7kg already. I hope you can help me with this. Thank you. Im ...
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2answers
134 views

Protecting a relay/SSR when driving AC window cover motor

I'm having trouble switching an AC motor. Relays spark and glue contacts, and SSRs start to flicker and not pass the full input after a while. The motor has 3 terminals for 230VAC mains. One is ...
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0answers
29 views

Calculating speed of the rotor with slip

The question i'm having trouble with is: Calculate the speed of the rotor of a 6 pole induction motor with a slip of 2.2%. The motor is connected to a 230V single-phase supply. I am familiar with ...
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1answer
3k views

How does an induction motor start when it has no capacitor or inductor?

The photo below shows a bench grinder. If you look carefully, there are only two wires for the main winding. There's no capacitor or inductor. I also verified this using the parts diagram. I was ...
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3answers
73 views

3 phase Motor connection, 230V delta or 400V star?

I have a motor with specifications: star 400V delta 230V and motor is of course 3 phase. Now the question is, how can I connect the motor to delta connection if I have only 400V line to line ...
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3answers
892 views

How to start 220/380V 3 phases induction motor by star-delta method with 3 phases 380V power source?

I would like to ask a question about how to start 220/380V 3 phases induction motor by star-delta method with 3phases 380V power source. Practically I think that it is impossible to be able to do it ...
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0answers
51 views

12V Pump power supply

I have a 12V pump that will run at 13 amps. I will be controlling it with a float switch and a relay. I have sound several power supplies at reasonable costs that will provide enough current to run ...
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2answers
91 views

Stepper Motor Startup Time?

I've been using a 28BYJ-48 5V stepper motor in a little project for a pan-tilt camera system, where the stepper is the pan motor. I'm powering it with 6 AAA NiMH batteries in series so it's about ~7.5-...
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1answer
120 views

Implement a speed controller for a cascaded position controller

I have here a motor with a magnetic encoder, which has 2^14 bit resolution. It is connected to an stm32f3, that I use for position control of the motor. Now, normally the P position controller uses as ...
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1answer
242 views

How can I decrease the torque of a stepper motor?

I would like to take a powerful stepper motor, and sometimes weaken it, so it will stall when it hits resistance. I understand that I can reduce torque with microstepping, but it does not seem to be ...
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1answer
49 views

Can I operate a 500kW/1500rpms motor at 35Hz with 400kW inverter?

In stock we have a 3 phase induction motor with a rated power 500kW and 1490rpms. What is the smallest frequency inverter which we can use to operate this motor in a machine with a maximum power/...
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1answer
91 views

Powering a 6V motor from a 5V USB battery pack

I'm trying to run a 6V/1A motor from a 5V/2.2A USB battery pack (i.e. a phone-charger battery bank). I'm using a Pololu boost converter to make 6A (>80% efficiency), but the motor never starts, it ...
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0answers
30 views

Tumble dryer induction motor wiring [migrated]

I have removed a motor from our old Hotpoint tvf770p tumble dryer. The motor was working fine (the rear drum bearing had worked through the bearing and rear casing). I am considering using it on my ...
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6answers
21k views

Is Power consumed by a motor under various load conditions constant?

Does a motor (dc /Induction/Synchronous ) consumes more power when operating at higher load than when operating at some lower load? Or power consumption remains constant/same in both cases? What I ...
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1answer
217 views

Confusion about Diagnosing Problems with a Commutated (Brushed) Motor

Recently I have been "brushing up" my knowledge of commutated (brushed not electronically commutated) motors. I came across this short video describing tests that can be done to diagnose wound rotor ...
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3answers
70 views

Controlling the speed of a single speed AC exhaust fan motor

I have this single speed exhaust fan: 30" Exhaust Fan with Shutter - Direct Drive - 1/4 HP - Single Speed. When it's running it's way faster and louder than I'd like it to be. So I'm trying figure ...
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1answer
148 views

How to calculate the derating of one IC

We are using one motor driver IC which can provide max 2A. The motor driver IC part no is BD6222HFP-TR. Maximum current drawing for motor is 1.5A when it got stalled. We tried to calculate the ...
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1answer
33 views

confusion regarding QNET VTOL(Vertical Take off and Landing)

I was reading a manual about QNET VTOL and i came across a block diagram(shown in attached snapshot) In the explaination of diagram, manual writes that The VTOL device is broken down into two ...
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2answers
31k views

How to wire 3 phase motor to VFD

I am trying to wire a new motor to a variable frequency drive (VFD) and having some trouble figuring out how to wire the motor to the VFD. The motor is a 1 HP, 3-phase, 208-230/460 volts, and I'm ...
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1answer
48 views

Back EMF of an H Bridge

I am building a H bridge to control a motor in the middle. As an example, when power is fully removed (24V... 80V in the picture below), there is some back EMF that will drive the 24V input rail. ...
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1answer
100 views

Maxwell Equations for modeling a DC Motor

I have seen so many videos about this and none helped me. I can't calculate B. (equation:\$ E = 2*N*area*B*cos(\theta))\$. I mean... when I calculate the field B, I find high values for the current. ...
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2answers
1k views

Designing/Predicting Output from Permanent Magnet Motorcycle Stators

I'm hoping you can help me. I've long been into motorcycles, and have restored and customized many different bikes. While building custom motorcycles, I often add electrical accessories, and use high ...
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1answer
135 views

PWM signal is affected when motor is connected

I am working on a fun side project where I am creating a PWM waveform using the LM324 and a small solar panel. I am using the LM324 for the astable multivibrator, integrator, and comparator. The ...
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1answer
88 views

Variable Frequency Drive with AC motor, 30kW

I have a VFD that controls an AC motor which compresses air. It is an 30kW motor. I have set the parameters required to drive the motor and it runs the motor but not properly. During the test the ...
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1answer
133 views

Health index / performance curve of a motor

I am collecting daily data of motors that consists of vibration in three direction x,y,z , RPM, Temperature, kVAh, kWh, kVArh, average voltage (LL), average voltage (LN), average PF, average current ...
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1answer
265 views

Compatible driver motor for JGA25-370

I'm new to electronics so i came here to ask some questions : 1) i have 4 motors JGA25-370 (6v, 58rpm) and 2 driver motors L298N ; If i put one drive to control 2 motors i will have max torque from ...
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0answers
64 views

Electric diagram st-rn [closed]

Hello, I am not sure if I am reading this diagram correctly, specifically st-rn change. It is like there are short circuits. Can someone explain current path? I am aware that I have mistaken something ...
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1answer
207 views

Start/ stop 5v motor from headphones jack

I would like to make the jaw of a plastic skull open/close based on words spoken by a Raspberry Pi. I can make the Pi send the audio to the headphone jack, and would like to use this output to run 5v ...