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PROJECT DESCRIPTION

The project is designed to control the speed of a single phase induction motor in three steps by using cyclo convertor technique by thyristors. A.C. motors have the great advantages of being relatively inexpensive and very reliable.

Induction motors in particular are very robust and therefore used in many domestic appliances such as washing machines, vacuum cleaners, water pumps, and used in industries as well. The induction motor is known as a constant-speed machine, the difficulty of varying its speed by a cost effective device is one of its main disadvantages. 

As the AC supply frequency cannot be changed, so this project uses a thyristor controlled cyclo converter which enables the control of speed in steps for an induction motor. The microcontroller used in this project is from 8051 family, a pair of slide switches is provided to select the desired speed range (F, F/2 and F/3) of operation of the induction motor. These switches are interfaced to the microcontroller.

The status of the switches enables the microcontroller to deliver the pulses to trigger the SCR’s in a dual bridge. Thus, the speed of the induction motor can be achieved in three steps i.e. (F, F/2 and F/3).

This very concept can be further enhanced and implemented to control the speed of a three phase induction motor. It can also be coupled with firing angle control for any desired speed.

Note: An induction motor is used to observe the output of the project. Motor is not supplied along with the kit. However, it can be purchased on extra cost.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
Cyclo Converter using Thyristors
Hardware Requirements
  • 8051 series Microcontroller
  • Crystal
  • SCRs
  • Opto- isolators
  • Transformer
  • Diodes
  • LED
  • Slide Switches
  • Capacitors
  • Resistors
  • Bulb
Software Requirements
  • Keil compiler
  • Languages: Embedded C or Assembly
Q & A
Q:  Which microcontroller is used in this project?
A:  8051 family 40 pin microcontroller is used in this project.
Q:  What is a Cyclo-converter?
A:  Cyclo-converter converts a constant voltage, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC link
Q:  What is the rating of Induction motor used?
A:  230V, 1500RPM, ¼HP rated induction motor is used.
Q:  How can the speed be reduced?
A:  By operation modes in F(Fundamental frequency), F/2 and F/3, speed can be reduced.
READ WHAT OTHERS HAVE SAID
Average Rating
 4.6/5
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Showing 4 of 15 reviews Show All
j.mounica, chennai on 4th June, 2016, 05:07 PM

I was typing my project title name in google then i got the edgefx website.
I found my project title in edgefx website then i have decided to buy project. I like the explanation of the video
the kit was delivered on time with right components.
i saw the edgefx contact number in website the i called them. They helped me in purchasing the project.
i would like to give reference to my juniors.

Gosai Milangiri Gunvantgiri, Ahmedabad on 23rd November, 2015, 04:36 PM

I was searched my project Cyclo Converter using Thyristors and i find edgefx in Google.
I found my project Title so decided to buy that project from Edgefx.
I have purchase through online

Khushal J Bhadra, Bhuj on 20th November, 2015, 05:26 PM

I got to know about Edgefx while I was searching for projects in Google.
Since Edgefx is providing Readymade kit also so decided to buy my project from Edgefx. I liked the explanation of video.
Purchased through online.
For me things are fine and not facing any problems so no changes keep doing the same work.

PATEL SAVANKUMAR KIRITKUMAR, VADODARA on 20th July, 2015, 05:13 PM

I come to know about your Institute through Internet and I used the Different Project topic’s as a keyword.I decided to buy a kit by seeing the picture in the website. Yes its on time.Yes I called up and some one from your team helped me to purchase.No Suggestions.

Rating Breakdown (15 Reviews)
12
3
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