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Single Phase AC Motor Speed Controller (with project report)


Everyone wants to control real world devices through microcontroller but we all wonders, how this can be done? So Here is another sensational project from our known friend Nasim Majoka (Majoka) who also our forum moderator.

Single Phase AC Motor Speed Controller project will explain you what exactly is needed to make control a real world device using our well known 8051 microcontroller. In this project user can use switches to controll speed of AC motor and LED display is provided to show the current speed. This project also comes with a Windows application written in Visual Basic from where you can control speed of motor.



Here is a very simple example of AC motor speed control given by changing firing angle of TRIAC with the help of micro controller AT89C51. Varying speed of AC motor by means of changing firing angle of any thyristor is very widely used method. One very nice example is fan regulator in which a fan motor is an AC motor used and its speed is varied using TRIAC method.

A zero crossing detector circuit is used here to interrupt AT89C51 after every 10 ms. After getting an interrupt 89C51 will fire TRIAC after some delay from 1 to 9 ms. This will cut the current supplied to motor and so the speed of motor will reduce. Thus by varying the delay after which the TRIAC is triggered one can change the speed of motor.
Tags AC motor control8051 ac motor controlsingle phase ac motor control
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Comments

jitendra.shishangiya
01 Apr 2015: 03:46 AM
hi ricky,

i have done this project of AC motor speed control as per circuit diagram shown here.

i get output of controller till MOC3011 pin out 1 and 2. but i didn't get output at pin 4 and 6.
now how i check output of opto-coupler MOC3011 at pin 4 and 6. and is it correct pin 6 is connected at GATE of triac BT138. ( also which value i should select for R and C in snubber circuit?)

pls help me to complete my project i need ur help urgently.
  
ajay_bhargav
03 Apr 2015: 11:24 AM
@jitendra.shishangiya, Please post in forum. We will be glad to help you. We cannot discuss in comments section.
  
sahithi
02 Sep 2015: 08:29 AM
Can you please explain the the clear controlling method of thyristor controlled induction motor.
  
ajay_bhargav
03 Sep 2015: 14:10 PM
@sahithi, the above project is using TRIAC not thyristor. Please post your question in forum for better clarity.
  
casino
08 Sep 2015: 06:19 AM
I can't open the hex file please help me
  
gaurav halvadiya
17 Oct 2015: 05:35 AM
plz give me snumber ciricut velue.and i not get output on 39 pin in simuletoon.i use potius for simuletion,plz give me any solution..
  
Youky
14 Apr 2017: 08:17 AM
Hi, where is the forum. I want to ask some question about this project. Pls help.
  
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Conversation

sahar7478
Fri Dec 08 2017, 12:47 PM
can i get gsm a6 library? can anybody help? tia
Faiqa
Sat Nov 25 2017, 08:32 AM
Can i get the code of Monitering and controlling of green house effect? ... Can anyone help me ?
Wed Nov 08 2017, 01:35 PM
Anirudh jain
I want to burn code in atmel 89s51 24pc 0329 but cannot get the connection with the burner. Can somebody provide me with the circuit diagram for connecting controller to burner. I'm using usb burner
Thu Nov 02 2017, 11:44 AM
karpal
write a program to exchange the content of b register with external RAM address 02CFH help me
Wed Nov 01 2017, 05:47 PM
sanae
i am using the DHT11 but i'm getting some errors in the simulate the programe in proteus 8 professional,: 1)cannot find model file 'DHTXX.MDF'.2)simulation failed due to netlist linker error(s).
Fri Sep 29 2017, 02:45 AM
Maaz
i am doing the same project on verilog please contact me [email protected]
Wed Sep 20 2017, 12:36 AM
Ted
In a missing pulse detector using a 555 timer connected as a monostable vibrator with a PNP transistor,how does the positve input pulse turn on the PNP transistor?
Sun Sep 03 2017, 02:29 PM
martymarty
How do I connect an <NOKIA 1100 LCD > to an atmega328P ?
poojab51296
Sun Aug 20 2017, 10:23 AM
i am intending to interface sd card with STM32F4 and want to write a file in sd card using SPI protocol but using HAL only. Can anyone help me PLEASE!!!!
poojab51296
Sun Aug 20 2017, 10:22 AM
hello

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roopay
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