Questions tagged [motor]
An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). 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.
3,573 questions
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7-1/2 single phase, 230V, induction(?), centrifugal switch equipped Compressor Motor NOT starting
I'm stuck, I've got a 7-1/2 single phase, 230V, induction(?), centrifugal-switch-equipped Compressor Motor NOT starting. (I put a question mark after "induction" because that's an ...
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How to calibrate a 3 phase IPM motor position?
I am currently working on developing motor controller for 3 phase IPM motor. I am able to run IPM on field oriented control algorithm. However I am unable to calculate exact offset angle for motor ...
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Boat Motor PWM driver
I'm a novice at circuit design and saw this schematic from a video and was wondering what each component did. It's supposed to a PWM motor driver for an electric boat. But there were things about the ...
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Does the system of ODE's for brushed DC motors also apply to BLDC motors?
The equations of motion for brushed DC motors are generally given as:
\$L \dot{I} + RI + k\omega = V_{in}\$
\$J\dot\omega\ = kI - b\omega\$
Where \$k\$ is the torque and velocity constant (assuming ...
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Motor wiring in either star or Delta [closed]
Can you connect a three phase motor with a power rating of 1.5KW motor or less in Delta connection and power it with 380V
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Deboucing a BEMF in BLDC motor control
I came through some basic codes for sensorless control of BLDC motors and I find the following snippet of code that deals with debouncing BEMF signals come from comparators:
...
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Driving H-Bridge Through Inverters Mysteriously drains capacitor
I am trying to control a pair of motors through a MOSFET H-Bridge, with the direction of movement controlled by a timer (schematic below). Once the timer is triggered, the motors will switch direction,...
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Why is it safe to soak an electric motor in isopropyl alcohol but not distilled water?
Adventures with CPAP washed, soaked an electric motor in propan-2-ol. Then he ran the motor for an hour successfully.
A deleted user filmed washing his motor in water. - https://v.redd.it/...
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Why do motor controller inverter sections use decoupling capacitors of a single value?
I've been looking at several reference designs for motor controllers, and I've noticed that the decoupling capacitors on the metal-clad inverter boards are always of a single value. Wouldn't it be ...
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Trapezoidal shape of signals in BLDC motors
One important fact that I did not yet understand in BLDC motor is the trapezoidal shape the driving voltage!! I go through an application note frome microchip:
https://ww1.microchip.com/downloads/...
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How to calculate or select capacitor value for this H-bridge?
Image source
Link to circuit simulation: https://tinyurl.com/28bmjgww
I would like to add a capacitor (decoupling) to my H-bridge because without it, the simulation shows that when the motor is ...
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Compact Low RPM Motor
Are there any electric motors that are designed to operate optimally (smooth and high torque) around 1 - 10 RPM speeds without the help of external or integrated reducers like gears? As far as I know ...
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Matlab Induction Motor Torque Characteristics
I'm having trouble with getting the correct plot from a coupled induction motor/DC generator system for an electric drives class. How it is supposed to work is the DC generator serves to simulate a ...
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Am I able to ignore R_Boot in Bootstrap circuit? Using UCC27710
Gate Driver: UCC27710
Application: 1Kw 3-Phase Motor Driver
Texas Instruments has a document on Bootstrap Circuitry, they describe the circuit as:
(Ignore red line)
However, in the datasheet of the ...
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Jittery BLDC motor using Arduino and L6234 driver
I'm trying to spin a BLDC motor using the ESP32-based Arduino Nano 33 BLE and the STM L6234 BLDC motor driver. I have written code in MicroPython to drive the motor, but unfortunately the motor keeps ...
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Connect ring terminal to PCB (low profile)
I have a BLDC motor control PCB (custom board - 15 A peak). The requirements for that board is to have low profile (max around 15-20 mm)
The chosen BLDC come with ring terminal crimp that need to be ...
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single phase submersible pump auxiliary binding start/run sequential or parallel?
I have a single phase submersible pump which is auxiliary binding that need start and run capacitor.
Does start and run capacitor giving phase shift to be started
a) Sequential (like trigger start ...
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Explain the circuit inside a rechargeable hair trimmer
I have a small, normal hair trimmer:
This is the circuit inside it:
Some information:
The batteries are two rechargeable Ni-Cd 1.2V batteries.
D1 has 0.7V forward voltage.
LED (marked with "...
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Small electric motor doesn't work with high DC voltage?
I have a small electric motor (from a trimmer). I see this behaviour:
when I apply 2.5 VDC (from 2 AA batteries) to the motor, it works smoothly.
when I apply 4.2 VDC (from an adapter) to the motor, ...
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Rewound Ziel fan 1ph 4 pole motor
4 pole, single ph, variable PSC fan motor.
I rewound the motor and now it draws 3 amps. Its only supposed to draw 1 amp. I'm sure I have the connection right. But I had to go half a wire size bigger ...
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How to best size Variable Frequency Drive (VFD) to motor
I have a specific application (3 HP-2.2 kW, 220 V 3PH/9.5 A, 3000 rpm induction motor from an old woodworking combination machine) I would like to use a Variable Frequency Drive for.
Are there ...
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Is making a stator out of lamination of steel or iron like this that a CNC machine would cut through a block of laminated material?
I thought that building a stator for a BLDC motor using a pure metal like iron or steel would be enough, so that the stator would have been made from a pure material, but then I read that the eddy ...
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How to determine nominal voltage of a 3-phase motor with only partial specs
I have an old AC motor that powers a jointer machine for woodworking from the late 70s. The plate has incomplete specs for the voltage. In other words, the voltage in the plate seems to have been ...
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All Slip ring motors showing High rotor current in our electrical system
All slip ring motors on our plant showing high rotor current. Stator current is high too but not above the limit but rotor current is off the charts up to 600 amp. Motors work just fine on no load. ...
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Sensorless BLDC motor control IC
I have a 240W (24V 10A) BLDC motor with sinusoidal back-emf (PMSM) at home and I wanted to give it a try and build a motor driver with FOC.
What is the best way to learn sensorless FOC-control? Use an ...
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Motor sensorless Control with STM32
I would kindly need the feedback of someone who has used stm32 and MC Workbench software.
I'm driving a BLDC motor (14 poles) with stm32 MC Workbench (using Motor Pilot tool) and I connect it to STM32 ...
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Use of a DC motor in conjunction with a TP4056 module and a lion battery
I have a very old battery powered dremel. Its design is simple, it consists out of three blocks:
Motor - Swtich - ...
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Speed control of BLDC motor using Sliding mode control
It existe many control algorithms for speed control of a BLDC motor, recently I was reading a book proposing a sliding mode control for BLDC speed control with the following equations that a captured ...
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What is the typical impedance of a universal motor for electric noises it generates?
The question: What is the typical impedance of a universal electric motor rated as 220 V / 50 Hz / 1200 W used in home appliances for the electric noises the motor itself generates? I've read that the ...
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Left motor not moving backward in Arduino L298N motor control project
Problem Description:
I’m working on a project where I’m controlling two motors using an Arduino and L298N motor driver, but the left motor doesn’t move backward when I send the reverse command. Here’s ...
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Displaying motor RPM effectively
I have a softcore RISC-V CPU running on an FPGA that is controlling a DC motor very simply with a PI controller. There are 7-segment displays for the user to vary the speed setpoint and another 7-...
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How do I determine how much wire, and how big an electromagnetic motor should be?
I am attempting to build an electromagnetic motor for my skateboard. I would like to use the current, standard skateboard wheels it came with, so the motor needs to be relatively small (40-46 mm). I ...
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Slip ring induction motor rpm control
My friend and I are reviving an old extruder for making filament and the screw speed is too fast to start the cooling line.
It is powered by a very unique motor which I've never heard before.
Elektra-...
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Electric motor running in reverse
I purchased a machine from China and they must have wired up the motor wrong because the pulley wheel is running counterclockwise when I need to it to run clockwise to properly work the machine. I’ve ...
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Data transmission between an Arduino and Stepper motor question
I have 2 stepper motor units attached to an Arduino with the typical red and black wires. I bought the unit used from a third party. Could there anyway for there to be a malware to be on the motor ...
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AC Motor Question Operating HALT Experiment
I'm using a TSA200-230-109 pump motor (part number 11035274) to operate a load and experiment with stressing a custom hydraulic system.
Above is the nameplate data, very limited.
I am a motor-moron ...
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Shutdown Issues DRV8251
I am attempting to use a PSoC 6 (CY8CKIT-062-BLE Product Page) and Texas Instruments DRV8251 (Product Page) to drive a brushed DC motor. I have created a small driver board that interfaces with the ...
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Inductive surge suppression for DC motor
I have this beefy brushed motor (24VDC, 30A at full load). It's relay driven (not negotiable due to requirements of electromechanical safety) so start and stops give problem. The interruption rating ...
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Clark Transform code
I come through the following link dealing with clark Transfrom
:https://github.com/rubinsteina13/C_SPACE_VECTOR_TRANSFS_LIB/blob/master/vector_transfs.c
But there is something I missed in the program ...
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What is this electromechanical device?
Can anybody identify the marked electromechanical component?
It is part of a mains-powered electric tower clock mechanism, circa 1980, and might potentially be part of rotation control, bell ringing ...
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Do you need to use the power invariant or magnitude invariant Clarke transform to compute both back EMF and torque?
I'm working on a motor simulator and FOC driver and after internalising the wiki pages for the Clarke and dq0 transform I'm stuck as to which variant of the transforms to use.
Assuming I'm given the \$...
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Choosing MCU for motor control
Suppose you have to choose an MCU to be used to drive an inverter and an electric motor (e.g., three-phase brushless AC) and have it soldered to the final pcb with connectors, mosfets ecc.
There are ...
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Repeated Capacitor Failure on Single-Phase Pump Connected to Pressure Controller (230V)
I’m facing a recurring issue with a single-phase capacitor-run pump installed at a client's site. The pump is connected to a pressure controller, and within one month, we’ve had three breakdowns, each ...
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Difference between connecting an inductive load to VM or GND?
To start off, low-side, high-side, half-bridge, and H-bridge topologies for driving motors / inductive loads is a relatively new topic for me so I do not have a lot of insight into these designs.
I've ...
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Total power generated by a 3 phase motor. Please check my working?
I'm driving a 3 phase motor with a turbine, and across each pair of terminals I have applied the same resistance, R.
I measure the root mean square potential difference, V_rms, across terminal 1 and 2 ...
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Motor control by PWM signal
I'm trying to control the speed of a small 1020 DC motor (which requires 3.7V for maximum operation) using PWM from an ESP32. I connected the motor through a MOSFET as a switch, and I tested the setup ...
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How can I connect a 1-phase, 220-volt motor to a timer and relay switch to alternate between two power sources at set times?
The Motor is a 2-Pole 20A Well Pump that is feeding 2 Properties. This is a residential 120/240V project. The Goal of this is to set up so that we can make it so that each house pays for half of the ...
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DANA IPM motor not working
I have a DANA TM4 IPM 6kw motor and its not running.
The controller that I have is supplying 20A, 20A and 45A (approx) when put in reverse, forward and boost mode respectively.
The motor jitters (...
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Need motor to stop at 4 different points for steering [closed]
Please see detail at the end which eplains the overall purpose of this project.
I'm building an electrical sports chair for disabled children.
One that is better in it's role than a wheelchair.
One ...
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Driving a 48 V motor with a 20 V lithium-ion battery
What is the best approach to drive a higher voltage motor from lower voltage lithium-ion batteries?
The premise is that I want to try making a cordless drill using a commercial 20 V battery but with a ...
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