Cyclo Converter using Thyristors

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  • Cyclo Converter using Thyristors

Cyclo Converter using Thyristors

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Product 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

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

Get 100% Assured Successful Results

A simple and effective plan that assures you the best scores, a plan that gives you time to read, learn, practically experience the whole workings of your project and create a successful unit you can proudly showcase. And the best part is this… even if your own project unit malfunctions... you will still have a ready-made project unit for yourself, just in case there is a last minute issue that you or your teammates could not solve. Confused? Well let me explain.

Plan A: Create A Successful Project Model By Yourself

Plan B: Have A Expertly-Made & Quality-Tested Replica Of Your Project For Assured Results

So here’s how it works.

In my engineering days, we used to struggle replicating a PCB model from our text books with real tools. We had a tough time with the circuits and most of the time - they used to fail. So I wanted to solve this problem not just for myself but for all my fellow students like you. Young, energetic and knowledgeable youth who really want to learn but still cannot afford to fail with the project because it matters and the colleges rarely help us out productively.

So I want to give you a beautiful DIY model of the project that also includes:

  1. A Complete set of tools, circuit diagrams, tested PCD, zero board, audiovisuals and everything else you will need to execute your project to perfection.
  2. A ready-made unit of the project itself, so that you can actually see, test and learn in real-time and if by any chance you could not complete the unit by yourself - can submit this unit for an assured first-class score.

Sounds like a dream? Well, yes it is and here’s how you can benefit from this project not just in your final year but also help you with your interviews and in the future too.

User Reviews

electronicshub

"I live in Hyderabad, a place that is known for engineering colleges. Went with frnd and bought a set from Ameerpet(tht hs rdymade stuff like this) and it failed just b4 viva. Thats when we got this thx to a senior who is sorta like a geek.. and let me tell u.. Its one reason why me and my frnds got thru the final sem. Works great and is useful too later.. "

Ravi Teja
Order No: HYF1290
electronicshub

"A must-buy. It helped me practice in real time and learn how to make a project by looking at an actual workable unit. (fyi - you get a fully built unit and another full set of components to build another by yourself) so it was great value for us. We shared the costs by 3 (our team for the project) but i got to keep my unit as the other two kept the original. Showed it for my on-campus and got thru too becuase it not just looked neat and profesionally bt worked great later. (still have it in my room, now working with GE in Bangalore) "

Anusha
Order No: BLR2933
electronicshub

"We have used it for our institution - it is available in lab and has been good for explaining various models in live during class. Strongly suggest every college dept to have it for labs as it is working well - even with regular use at lab for more than 1 year. Note:We got the unit complementarity before launch in 2014 and have later purchased few batches. The team behind it is professional and know what electronics students need and i am writing this review on their request on 13/05/2016"

Mr. Ramesh Kumar Jha
Order No: BQF3698

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.

Q:  What do F, F/2, F/3 indicate?

A:  F indicates the fundamental or supply frequency, F/2 indicates the supply frequency divided by two and F/3 indicates the supply frequency to one-third.

Q:  What is the formula for calculating smoothing capacitor value?

A:  There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.

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