The auto power supply control system is a very well-situated system for the customers who want to achieve UPS (uninterruptible power supply) from various sources like solar, generator main, and inverter. If we see it at a profitable level, then we can guess that there are many customers which have the machines whose necessities is only UPS. Such as the database corporations whose all work is done on a PC, then it is needed a UPS all the time, otherwise, their PC could be off throughout the time when the load is moved on another source. To overcome these problems, here we are having a system, namely “Auto Power Supply Control System”. There are several companies are working on this project with a help of power relays, magnetic contacts. But these systems are expensive and do not offer precise UPS. Here the proposed system can be built with power electronics components, microcontroller, and relays.
Introduction of Auto Power Supply Control to Ensure No Break Power
The auto power supply control to ensure no break power project can be built with 8051 series Microcontroller, Relay Driver IC, Relays, LCD, Lamp, Push Buttons, Transformer, Diodes, Voltage Regulator, Crystal, LEDs, Capacitors, Resistors, Keil compiler, Languages: Embedded C or Assembly.
An embedded system combination of hardware and software which together form a component of a larger machine. An example of an embedded system is a microprocessor that controls an automobile engine. An embedded system is designed to run on its own without human intervention and may be required to respond to events in real time.
The main features of AT89S52 Microcontroller include the following
- Compatible with MCS®-51 Products
- 8K Bytes of In-System Programmable (ISP) Flash Memory
- 4.0V to 5.5V Operating Range
- Crystal Frequency 11.0592MHZ
- Three-level Program Memory Lock
- 256 x 8-bit Internal RAM
- 32 Programmable I/O Lines
- Three 16-bit Timer/Counters
- Eight Interrupt Sources
- Full Duplex UART Serial Channel
- Watchdog Timer
The relay is an electromagnetic switch, used to control the electrical devices. Here, copper core, magnetic flux plays the main role.
Relay Driver ULN2003
- ULN is Relay driver application
- The ULN2003 is a monolithic high voltage and high current Darlington transistor arrays.
- It consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diode for switching inductive loads.
- The collector-current rating of a single Darlington pair is 500mA.
- The Darlington pairs may be paralleled for higher current capability.
- The ULN functions as an inverter.
- If the logic at input 1B is high, then the output at its corresponding pin 1C will be low.
LEDs are semiconductor devices are made out of silicon. When current passes through the LED, it emits photons as a byproduct. Normal light bulbs produce light by heating a metal filament until its white hot. LEDs present many advantages over traditional light sources, including lower energy consumption, longer lifetime, improved robustness, smaller size and faster switching.
Liquid Crystal Display (LCD)
- Most common LCDs connected to the microcontrollers are 16×2 and 20×2 displays.
- This means 16 characters per line by 2 lines and 20 characters per line by 2 lines, respectively.
- The standard is referred to as HD44780U, which refers to the controller chip which receives data from an external source (and communicates directly with the LCD.
Working of Auto Power Supply Control to Ensure No Break Power
The main purpose of this project is to give UPS (uninterrupted power supply) to a load, by choosing the supply from any source like mains, inverter, generator, etc. The proposed system uses four switches to show the individual failure of that power supply. When any of the switches is pressed it demonstrates the lack of that particular supply, switches are linked to the microcontroller as i/p signals. An 8051 family microcontroller is used.
The o/p of microcontroller connects to the relay driver IC, which activates an appropriate relay to keep UPS to the load. The o/p shall be experimental using a lamp drawing power supply from mains at first. On the breakdown of the mains supply the load acquires supply from the next accessible source, say an inverter.
If the inverter also fails, it activates over to the next accessible source and so on. The present status, as to which source supplies the load is also exhibited on an LCD. As it is not possible to offer all different sources of supply, one source with alternating switches is offered to get the similar functionality.
Further, this project can be developed by using other sources, namely wind power also and then taking into reflection for using the finest potential power whose tariff relics lowest at that moment.
From the above information, finally, we can conclude that it is more reliable, compact and less costly as compared to other ATS panels as well as power control systems. These systems can be used in industries, educational institutions, and where we have different types of power sources like wind, solar and main. Furthermore, any doubts regarding this or to implement any electrical project, please give your valuable suggestions by commenting in the comment section below. Here is a question for you, what is a UPS?