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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

Mon Jun 12 2017, 07:36 PM
madhusoodanan
how to receive string using 8051
ajay_bhargav
Thu Jun 08 2017, 05:48 PM
@Vinoth post in forum.
Wed Jun 07 2017, 06:40 AM
vinothkannan
how interface eprom in this code
Thu May 25 2017, 05:25 AM
Monir Hossain
Can i change the 7-Segment are common pin ? And how to?
Mon May 08 2017, 12:45 PM
ivan muvunyi
please can you send me wiring diagram for automatic control of 3 phase induction motor for production of maize flour
Wed May 03 2017, 08:39 PM
imran qureshi
hello friend
Sun Apr 30 2017, 05:49 AM
Lijin G Varghese
Can u send me the circuit diagram for Program to interface GSM Module with 8051 microcontroller (AT89C51) using PC and LCD
Fri Apr 28 2017, 03:47 PM
SANDEEP T S
I need pcb wizard 3.5 version kindly send valid link of yours
ExperimenterUK
Mon Apr 17 2017, 11:56 PM
Sorry..We had a problem with registration.Confirmation emails were not sent.Please re-register
Thu Apr 13 2017, 07:29 PM
Piyush Aughad
I want circuit & program for radar detection using Microcontroller 8051

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richard1976
Sat Jun 24 2017, 05:48 PM
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Wed Jun 21 2017, 11:44 AM
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Tue Jun 20 2017, 11:05 PM
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Tue Jun 20 2017, 07:47 AM
firdaus0hsem
Sat Jun 17 2017, 04:53 PM
amir9297
Fri Jun 16 2017, 05:44 AM
madhusoodhanan
Mon Jun 12 2017, 07:31 PM
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Sun Jun 11 2017, 05:50 AM

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Posted By ExperimenterUK
Mon Jun 26 2017, 08:42 PM
I have attached a demonstration file.It will echo ...
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Hi can you tell me how to send and recieve usart d...
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HiUnfortunately there is too much code here to wor...
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hi i have written this programme and can send data...
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I would say yes, but data transfer will be slower ...
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Hello ExperimenterUK, Thanks for your support. Fro...
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Posted By ExperimenterUK
Tue Jun 20 2017, 06:27 PM
You could start by looking at this tutorial on ke...
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