Download the complete Electrical Engineering project topic and material (chapter 1-5) titled Construction of digital ac power controller here on PROJECTS.ng. See below for the abstract, table of contents, list of figures, list of tables, list of appendices, list of abbreviations and chapter one. Click the DOWNLOAD NOW button to get the complete project work instantly.
PROJECT TOPIC AND MATERIAL ON Construction of digital ac power controller
The Project File Details
- Name: Construction of digital ac power controller
- Type: PDF and MS Word (DOC)
- Size: [195KB]
- Length:  Pages
The desire for power to be controlled by means of phase angle variation of the conduction period brought about a digital ac power controller. Controlling the phase angle can be made simple and easy if we set different firing times corresponding to different firing angles. The circuit can be used as power controller in lighting equipment, hot air equipment, universal single phase ac motor, heater, etc. This project is aimed at constructing the circuit with necessary modification to serve this purpose.
TABLE OF CONTENTS
Table of content
1.1 Features and Benefits of Scr’s
1.4 Scope of the Study
2.3 Composition Components/Types of Components And Their Uses
2.3.1 Integrated Circuit
18.104.22.168 Capacitors Symbols
22.214.171.124 Classification Of Capacitors
126.96.36.199 Resistor Symbol
188.8.131.52 Classification Of Resistor
184.108.40.206 Crystal Oscillator
Circuit Operation And Construction
SCR power controllers were first developed in the late 1950’s. Originally available with ratings of only a few hundred amps and low voltage, the SCR power controller has steadily increased, the number of potential applications has increased as well. In fact, nearly every industrial process that uses process heating equipment can employ SCR power controllers.
SCR power controllers provide a relatively economical means of power control. SCR power controllers cost less and more efficient than saturated core reactors and variable transformers, compared to contractors, SCR power controllers offer a much finer degree of control and do not suffer from the maintenance problems of mechanical devices.
1.1. FEATURES AND BENEFITS OF SCR’S
- High Reliability: because the SCR power controller is a solid state device, it provides virtually limitless, trouble free operation with a minimum of maintenance
- Infinite Resolution: power or voltage can be controlled from zero to 100% with infinite resolution.
- Extremely Fast Response: the SCR controller can toggle load power on and off rapidly, providing the means to respond quickly to command, load, and power supply changes.
The advantages of SCR power controls outweigh the disadvantages. The biggest advantages are high reliability and low maintenance requirement. Because the SCR is a solid state device, there are no moving parts to wear. Simply keeping it clean and cool, provides users with many years of reliable service. Another advantage is control options with on/off electro mechanical contractor, an SCR provides fast response and high resolution as well as the ability to limit current and regulate load voltage, current or power.
- Low power factor
- High harmonic current
- Radio-frequency interference when using phase fired power controllers.
1.4 SCOPE OF THE STUDY
The scope of the study of this project work is describes as listed below.
- It is an example of a controlled device used in electrical electronics engineering approach
- This is a circuit for a digital ac power controller that can set different firing times.
All project works, files and documents posted on this website, projects.ng are the property/copyright of their respective owners. They are for research reference/guidance purposes only and the works are crowd-sourced. Please don’t submit someone’s work as your own to avoid plagiarism and its consequences. Use it as a guidance purpose only and not copy the work word for word (verbatim). Projects.ng is a repository of research works just like academia.edu, researchgate.net, scribd.com, docsity.com, coursehero and many other platforms where users upload works. The paid subscription on projects.ng is a means by which the website is maintained to support Open Education. If you see your work posted here, and you want it to be removed/credited, please call us on +2348159154070 or send us a mail together with the web address link to the work, to [email protected] We will reply to and honor every request. Please notice it may take up to 24 - 48 hours to process your request.