BLDC -Motor

3,850 Views

What-Is-BLDC-Motor-How-Its-Working-Wiring-And-Applications

WHAT IS A BLDC MOTOR

  • BLDC stands for Brushless DC motor.
  • semiconductor control is used for controlling the statas current in such a way that maximum torque is obtained at a given speed.

CONSTRUCTION OF BLDC MOTOR

Stators has three-phase winding while the rotor is in the form of a permanent magnet:

BLDC Motor also consist of rotor position sensors that produce an electrical signal that indicates the current position of the rotor.

BLDC stator winding is driven from an electronic drive which is 3- phase inverter.

The speed of BLDC can be controlled by controlling its stator voltage which can be achieved by controlling the DC input voltage of the inverter.

SENSOR:

The document magnet Brushless DC motors use a hall sensor with 60-degree electrical spacing.

HALL SENSOR:

  • These sensors produce a logic 1 when exposed to N- type of the rotor and logic 0 otherwise.

IN BLDC MOTOR:

  • The driver circuit operate on DC supply.
  • The fields produced by stator & rotor remains stationary with respect to each other.
  • This motor does not have Brushless motor.

TYPES OF BLDC MOTOR

  • Unipolar ( half wave) BLDC motor.
  • Biopolar ( full wave ) BLDC motor.

WORKING PRINCIPLE OF BLDC MOTOR

BLDC motor works on the principle similar to that of a conventional DC motor, i.e the Lorentz force law which states that whenever a current carrying conductor placed in a magnetic field it experiences a force.As a consequence of reaction force, the magnet will experience an equal and opposite force.BLDC motor, the current carrying conductor is stationary while the permanent magnet moves.

When the stator coils are electrically switched by a supply source,it becomes electromagnet and starts producing the uniform filled in the air gap.though the source of supply is DC, switching makes to generate an AC voltage waveform with trapezoidal shape.Due to the force of interaction between electromagnet stator and permanent magnet rotor,the rotor continues to rotate.motor stator is excited based on different switching states,with the switching of windings as high and low signals, corresponding winding energized as North and South poles.the permanent magnet rotor with north and south poles align with stator poles causing motor to rotate.

Observe that motor produces torque because of the development of attraction forces ( when north- south or south- north alignment) and repulsion force ( when north-north or south-south alignment).by this way motor moves in a clockwise direction.

ADVANTAGE OF BLDC MOTOR

  • No maintenance is required due to absence of Brushes and commutators.
  • Low inertia due to low friction.
  • Higher maximum speed due to low friction.
  • Long life.
  • Reliable operation.
  • High efficiency ( more than 75%).
  • Speed and position can be controlled.

DISADVANTAGE OF BLDC MOTOR

  • Complex construction.
  • Expensive.
  • Need complex electronic controllers.

BLDC MOTOR CONTROL WITH ARDUINO

circuit diagram for Arduino bldc and esc controller

Arduino Code For BLDC

/*
        Arduino Brushless Motor Control
  
*/

#include <Servo.h>

Servo ESC;     // create servo object to control the ESC

int potValue;  // value from the analog pin

void setup() {
  // Attach the ESC on pin 9
  ESC.attach(9,1000,2000); // (pin, min pulse width, max pulse width in microseconds) 
}

void loop() {
  potValue = analogRead(A0);   // reads the value of the potentiometer (value between 0 and 1023)
  potValue = map(potValue, 0, 1023, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)
  ESC.write(potValue);    // Send the signal to the ESC
}

working video

APPLICATION OF BLDC MOTOR

  • Electric power steering.
  • Air conditioners.
  • In aerospace.
  • Computer peripheral equipments.
  • Instrumentation and control systems.
  • Biomedical instrumentation.

15140cookie-checkBLDC -Motor

Author: yawot

94 thoughts on “BLDC -Motor

  1. Thank you for another informative website. The place else
    may I get that kind of information written in such an ideal method?

    I’ve a project that I am simply now working on, and I have been at the look out for such information.

  2. Pretty great post. I simply stumbled upon your weblog
    and wanted to say that I have really loved browsing your weblog
    posts. In any case I’ll be subscribing in your
    feed and I hope you write once more very soon!

  3. I know this if off topic but I’m looking into starting my own blog and was wondering what all is required to get
    setup? I’m assuming having a blog like yours would cost a
    pretty penny? I’m not very internet smart so I’m not 100% positive.
    Any suggestions or advice would be greatly appreciated.
    Appreciate it

  4. Valuable info. Fortunate me I found your web site accidentally, and I’m
    shocked why this coincidence didn’t came about earlier!
    I bookmarked it.

  5. My spouse and I stumbled over here by a different web address
    and thought I might check things out. I like
    what I see so now i’m following you. Look forward to finding out about your web page yet
    again.

  6. I feel that is one of the so much significant info for me. And i’m glad studying your article. However wanna statement on few basic things, The web site style is ideal, the articles is truly excellent : D. Just right task, cheers

  7. Today, while I was at work, my sister stole my iphone and tested to see if it can survive a forty foot drop, just so she can be a youtube sensation. My apple ipad is now destroyed
    and she has 83 views. I know this is completely off
    topic but I had to share it with someone!

  8. Tremendous things here. I’m very happy to see your article.
    Thanks so much and I am looking ahead to contact you. Will you
    kindly drop me a mail?

  9. With havin so much content and articles do you ever run into any issues of plagorism or copyright infringement?
    My website has a lot of exclusive content I’ve either written myself
    or outsourced but it looks like a lot of it is popping
    it up all over the web without my authorization. Do
    you know any solutions to help protect against content from being ripped off?
    I’d really appreciate it.

  10. Attractive section of content. I just stumbled upon your weblog and in accession capital to assert that I acquire actually enjoyed account your blog posts. Any way I?ll be subscribing to your augment and even I achievement you access consistently fast.

  11. Via my research, shopping for technology online may be easily expensive, however there are some how-to’s that you can use to help you get the best things. There are always ways to discover discount discounts that could help make one to have the best electronic products products at the smallest prices. Thanks for your blog post.

  12. Hiya, I am really glad I’ve found this information. Nowadays bloggers publish just about gossips and web and this is actually annoying. A good web site with interesting content, that is what I need. Thanks for keeping this website, I will be visiting it. Do you do newsletters? Cant find it.

  13. I am so happy to read this. This is the kind of manual that needs to be given and not the random misinformation that’s at the other blogs. Appreciate your sharing this greatest doc.

  14. Someone essentially help to make seriously articles I would state. This is the very first time I frequented your website page and thus far? I amazed with the research you made to make this particular publish extraordinary. Great job!

  15. Wow, wonderful weblog format! How lengthy have you ever been running a blog for? you made running a blog glance easy. The entire look of your site is fantastic, let alone the content material!

  16. I’m not sure where you’re getting your info, but great topic.
    I needs to spend some time learning more or understanding more.
    Thanks for wonderful info I was looking for this information for my mission.

  17. Thanks for some other informative web site. Where else may just I am getting that kind of info written in such a perfect means? I have a challenge that I’m simply now running on, and I have been on the look out for such information.

  18. Thank you for another informative blog. Where else may just I get that type of information written in such a perfect manner? I’ve a project that I’m simply now running on, and I have been on the glance out for such information.

  19. I have learn some just right stuff here. Certainly worth bookmarking for revisiting. I wonder how a lot attempt you place to make the sort of wonderful informative web site.

  20. I do not even know the way I finished up right here, but I believed this put up used to be great. I do not recognise who you might be however definitely you are going to a famous blogger in the event you aren’t already 😉 Cheers!

  21. Hi! Someone in my Myspace group shared this site with us so I
    came to take a look. I’m definitely loving the information. I’m book-marking and
    will be tweeting this to my followers! Excellent blog and terrific design and style.

Leave a Reply

Your email address will not be published. Required fields are marked *