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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52 views

Information about Tesla model 3's IPMSRM motor construction and torque production

The Tesla model 3 has a AWD with IM at front and internal permanent magnet switched reluctance motor at its rear wheels. This IPMSRM motor has permanent magnets buried into the rotor in V pattern. ...
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Speed up or slow down motor of cassette recorder using a potentiometer

Background: There is a cassette recorder (RadioShack CTR-80A) and its owner would like to have the ability to speed up and slow down the motor to record and play the sound in a distorted way. We've ...
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Controlling multiple stepper motors using a single driver

I want to control ~50 stepper motors using a single driver, and use only one Arduino pin to control each motor. Currently I'm using a single A4988 driver and a couple of 12v 1amp stepper motors to ...
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PWM Generation on PIC32 Series

I am attempting to get a PIC32MK0512MCF064 chip to generate a PWM signal, but have been running into some issues. I was able to reference some code spat out by Harmony so I don't think I'm far off but ...
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Establishing common ground between attiny and 24v motor, and between attiny and 12v logic circuit, without connecting 24v motor and 12v logic grounds

I have a coin hopper which has a 12V logic circuit and a 24V motor. It also has 2 brass plates which sense the amount of coins in the unit, one plate has high voltage, and second has low. These plates ...
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29 views

How do I calculate the regulation of the generator in a Ward-Leonard system?

I have a DC motor with independent excitation, power by a ward-leonard system. The nominal voltage applied to the motor is 250 V. I have to calculate what regulation(%) to apply to the generator so ...
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1answer
49 views

Speed and efficiency of solenoid train?

I'm talking about a simple solenoid train as shown in below image that works on the same principal as a homo-polar motor. It consists of an electric cell (AA or AAA type) whose terminals are fitted ...
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38 views

Windshield motor with ATX power supply keeps shutting down

I need to connect my windshield motor (12V) to my ATX power supply from old computer. I've tested the motor on my bench power supply and i draws around 1,5A @ 12V, so it should be well in range of the ...
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34 views

How to find the transfer function of this digital controller and DC Motor?

I am studying digital control theory and struggling with a particular diagram of a digital control system. The system is presented below: \$D(z)\$ is a digital compensator, \$G_{h0}\$ is a zero order ...
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48 views

dc motor generator voltages

I am trying to convert a DC motor into a generator but the output voltages seem way too high. I have tried to lower them with step-down buck converters but blew them up. I attached a picture where it'...
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Motor 1kw 220V AC controll using BTA16-600BW

I am trying to change an analog AC speed motor control to digital control. The analog configuration has a BTA16-600BW and uses DB3 as diac. The snubber components are 1K resistor and 47 nF. I tried ...
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State Space model of a positional servo system. What are these parameters?

I am trying to solve a problem related to state space modelling of a positional servo system. I am stuck in the last part of the question. The full questoin is shown below: The following question ...
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Stabilize voltage input for Arduino nano on a drone

I am doing a small drone project, and the 8V battery provides power to both the motors and the Arduino Nano. I expect a lot of noise from the motors, however I assume that the Arduino Nano power ...
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I have a AC motor with 3 wires. Black, red and white. How can i connect the capacitor and to power supply as shown on the diagram?

Please help me to understand the diagram attached. I have a motor with three wires. Black, Red, White. and a Capacitor with 2 wires(both Black). 1. How to connect the capacitor to the motor 2. How ...
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DC Motor - need replacement [closed]

Ok I’m am hoping someone can help me. THREE of my 4 door locks stopped working. Dealer quotes me $500 (parts, labor, tax) or $200 (parts, tax). Quote to myself to fix FC-280ST-16200 KD603713 ...
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42 views

diesel generator load calculation? [closed]

I notice in my father’s farm , there is a diesel generator that powers 30 hp water pump as well as water pressure control or ( water pusher something like this) that is also 20 hp. This is the ...
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How do I move a motor to a desired angle using a motor encoder?

So I have this project, the goal is basically to be able to make a motor move to rotate a set of gears and move a panel attached to a hinge to a desired angle. I have a motor encoder attached to the ...
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Developing Sensorless FOC PMSM code from Sensored FOC ACIM

Recently I worked on a project to develop field-oriented control (FOC) for AC Induction Motor (ACIM) with Encoders giving the position feedback. Using the same algorithm, my next project is to ...
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Power drill motor with no electronics? [duplicate]

I have a Bosch power drill, the same as in this other question. I checked it carefully and it doesn't seem to have a capacitor or any other electronic components. Does it mean the universal motor ...
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Motor shaft mounting with clamps and bushings [migrated]

If I'm in the wrong section of stack exchange, please help me go to the right place. I am trying to find out if this combination of motor shaft and clamps will work out. I found these clamps/...
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2answers
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How to predict and compensate for the dynamic and static resistive torque due to losses in a motor

I will have external torques acting upon an axle to which a motor is connected. I want my motor control system to fairly precisely compensate for most of the torque that the motor imposes on the axle ...
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Segway motor not running after vel_setup command in odrive?

I am testing odrive to control segway motor. I finished the setup from documentation but the motor is not moving after sending this command in terminal:- ...
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115 views

BLDC motor current sensing for load torque

I would like to control 14V BLDC motor of battery powered drill. What I want to do remake the drill to nut runner (torque wrench), so I need to sense a motor current which is proportional to motor ...
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4answers
77 views

High torque low rpm BLDC Motor

I am creating follow focus system (motor with gears that moves camera lens ring). Vast majority of such systems use low Kv high torque BLDC motors - similar to the ones used in gimbals. I think it is ...
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Circuit for reversible motor controlled using relays

I am very new to electronics and drawing isn't my strength either, so please forgive the bad diagram. But I hope it makes sense. I want to be able to control a motor using relays and be able to ...
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Controller Motor With Multiple Transistors with Arduino

I am trying to control a motor with two MOSEFT transistors (one is enabled and the other is disabled). The problem is Ardunio requires the grounds to be connected which causes the voltage where M1 ...
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1answer
65 views

Proper inrush current limiter 50A universal motor

We have one dental equipment with one universal motor  in 2000W and 220V range shown below: And we gave two corruption in selled device to customers which have inrush current problem by switching ...
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Control motor direction with BTS7960

I am using the same BTS but I am controlling it with labview. I am able to control the speed in one direction, even though I have both R PWM and L PWM connected to PWM pins 3 and 7 respectively on my ...
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110 views

Can anyone help me slow down a 3 speed motor?

I have a 3 speed single phase A/C motor inside an indoor air-con blower and it runs very noisy (not mechanical/installation issue but just the fan moving air is noisy itself) even on its LOW speed ...
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1answer
39 views

Confusion with winding voltages for a fixed positioned brushless motor

Below is examples of various commutation forms different driving ways of a brushless motor: Such a motor can be BLDC or PMSM. My question is: imagine we set the motor position to a fixed stationary ...
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109 views

Can I use a Microwave Capacitor as a Motor Start Capacitor?

Recently I had a garage door opener stop working and it was replaced. I decided to take it apart and realized the capacitor had blown a hole in itself. The motor, despite being about 20yrs old, seems ...
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72 views

Is the BLDC motor and “brushless AC servomotor” same thing?

Are the terms BLDC motor and "brushless AC servomotor" exactly the same thing? I cannot find information so far whether there is difference. For instance, at this site they are treated as if the ...
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3answers
73 views

How does the magnetic field in a servo motor acts according to the PWM signal?

I have read about servo motors but have problem grasping the main idea of obtaining fixed position by the magnetic field. The servo motor position is said to be controlled by PWM signal. And a toy DC ...
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2answers
53 views

Switch to turn off motor and another to turn the motor on

I have a DC motor that turns a gear which then has an arm that will hit a switch which turns the motor off. Is there a way for me to build this without using a microcontroller? Like I start the ...
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High output of NCP5104 (half bridge driver) is active in dead time zone. How can I solve it?

I try to drive BLDC motor. I have a problem in gate driver circuit. I use three NCP5104 gate driver. NCP5104 has 520ns internally fixed dead time. "The dead time is the time between the high side and ...
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How BLDC motora coils and magnets are mechanically arranged

I've read some articles about how BLDC motors principle (in my case 3-phase) with something also about linear BLDC. This documents talks about actuation and theory. But looking at drawings I became ...
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60 views

Adding poles to motor

I just recycled this motor and I would like to use it to generate and charge at 60 V. It’s rated at 6350 rpm at 95 V. It's a brushed DC motor. It has two poles. Is it possible to remove the two ...
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AC Motor voltage

I have a 3 phased AC electrical motor, without any plate on it, so I don't know which voltage should be provided to the motor either 220 or 440V. Is there any way that I can find out?
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What happens if you rotate a stepper motor by hand while it is powered?

There is some resistance to it, but it can be rotated without excessive force. When would this cause damage?
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126 views

Small 5V BLDC motor controller - 6 mosfet IC

I am creating follow focus system (motor with gears that moves camera lens ring). I think the best choice is BLDC motor (DC geared are too loud, stepper don't have enough torque or too big). I need ...
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Is a rotor of an electrical motor charged with electricity?

This might seem to be dumb question, but as far as I understand it: An electrical motor is made of a rotor and a stator. The stator is electrically powered: it has a solenoid and current passing into ...
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1answer
54 views

Lab power supply with motor startup spikes (inrush?)

I want to buy a lab power supply. However (30 V, 5 A). However, when a motor starts (inrush it's called afaik), it uses extra current. But I don't know really how much this typically is. Or if there ...
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49 views

Circuit to run a 3 phase magnet generator as motor?

I am trying to convert a wind generator to a brushless motor. As you can see at the image, it has 16 magnets and 12 coils. The coils are connected as 3 phase, star connection, so I have 3 output ...
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In this transistor circuit, what is the purpose of the diode across the motor?

I am trying to follow an Audrino tutorial with my kid and I am confused by the role of the diode in this circuit. In particular, I have the following questions: It looks like the circuit will work ...
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1answer
51 views

Formula for how much power a motor generates

I'm interested in the formula for how much power a handcrank motor can generate. I dont know much about electrical engineering but I'm assuming it's related to a few factor. The speed on which you ...
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Simple Synchronous Rectification of Unidirectional Motor?

I'm trying to drive a high current, low voltage motor (24V 100A cont.). It previously used a very large and overpowered H-Bridge (16 FETs). The system only can rotate 1 direction, and is required to ...
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Controlling a motor with Alexa enabled WiFi switches

I am looking to replace a DPDT switch, which controls a DC motor, with switches that can be activated using Alexa/over WiFi. For my purpose, the motor needs to spin in both directions, so the polarity ...
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51 views

If you have a BMS, will current be limited at some points to a DC motor and affect performance?

I am part of a group in a senior design project. We are designing an electric bicycle. Our professor proposed an issue to us and we are having trouble figuring it out, as we can't really seem to find ...
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1answer
56 views

how to wire a 12 lead motor for lowest possible current draw

Im on a job where a blower motor that was a 20amp load, was replaced with a 46Amp motor. The bucket can not be replaced for a larger starter, there is no more room in the MCC. The owners do not want ...
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2answers
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How to model the motor for this PWM motor driver circuit and is this simulation reliable?

I want to control the speed of this brushed DC motor with PWM control by using a uC board like an Arduino board. So the PWM output is 5V and it can source only upto 20mA so I need to use a transistor ...

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