Hello friends, hope you all are fine and having fun. Microcontroller based digital power factor and phase angle meter kareem a. May 09, 2017 three phase ac power measurement using pic microcontroller code. The easiest way to determine the power factor is to simultaneously sample the voltage and current at a high frequency perhaps a 100 times the mains frequency with an ad converter and then calculate the ratio of the. I want to measure digitally the power factor of the fan, under all possible circumstances voltage fluctuations, source dampings, etc. This note will start by explaining how to correctly power and wire the microcontroller. Now, ac power measurement can be defined as the measurement of voltage, measurement of current, and measurement of power factor. We also use zero crossing detector circuit in power factor improvement using pic. Power factor correction brings the power factor of an.
Measuring of power factor from load is achieved by using pic microcontroller based developed algorithm to determine and trigger sufficient switching of capacitors in order to compensate demand of excessive reactive power locally, thus bringing power factor near to unity. How to build a calculator using pic16f877 microcontroller. A digital clock can be made easily by using pic microcontroller, ds7 and a 16x2 lcd. Measure ac voltages ac current ac power power factor.
This is to certify that the thesis entitled,automatic power factor correction by microcontroller 8051 submitted by sri satyasuranjeet behera,sibasis mohapatra and monalisa bisoi in partial fulfillment of the requirements for the award of bachelor of technology degree in electrical engineering at the national institute of. This time we will see how to measure ac voltage parameters with the help of microcontroller. Measurement and simulation of power factor using pic16f877 abstract. Mar 30, 20 hello friends, i hope you all are fine and having fun. Ive read about zero crossing detection method, that enters the analogue quantities of voltagecurrent consumed by the. In electrical engineering, the power factor of an ac electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit. So, i use atmega8 microcontroller and the used proteus isis as the simulating software. Optimal power factor correction for inductive load using pic. In this paper measuring of power factor from load is done by using atmega328 microcontroller and trigger required capacitors in order to compensate reactive power and bring power factor near to unity. Automatic power factor detector and corrector using arduino uno the project report submitted in partial fulfilment of the requirements of the degree of bachelor of engineering by mr. The work presented in this paper introduces a simple method for the measurement of active and reactive power digitally using microcontroller. Power factor measurement using atmel avr micro controllers. In general, ac power is measured using various techniques, here in this project let us see about ac power measurement meter using pic microcontroller.
Automatic transfer switch using pic microcontroller. Power factor measurement using atmel avr microcontrollers. This involves measuring the power factor value from the load using current. We also use zero crossing detector circuit in power factor improvement using pic microcontroller to check the zero level of. Power factor measurement, microcontroller, circuit. Calculation the 78m6631 provides a direct power factor measurement simultaneously for phase a, phase b, and, to the apparent power. May 09, 20 pic 16f877a microcontroller is the heart of this automatic power factor controller, it find, displays and controls the power factor to correct power factor, first we need to find the current power factor.
Here we see that same work can be obtained from cheap and easy to used arduino platform. Microcontroller based automatic power factor correction system myint myint than department of electronic engineering, yangon technological university, yangon, republic of the union of myanmar abstractthis paper deals with the design and construction of power factor correction pfc system using solid state. Voltage measurement with a pic microcontroller ryan popa 03302012 design team 3 abstract the purpose of this application note is to explain how to measure a voltage using a pic18f4520 microcontroller. Measurement and simulation of power factor using pic16f877. Here we have designed a pcb using easyeda online pcb simulator and designer. The objective of this project is to measure the power factor from using pic controller and trigger the capacitor bank by using a triac circuit in order to compensate. Request pdf programming of pic microcontroller for power factor correction in recent years, the power quality of the ac system has become a great. Todays post is about power factor measurement using microcontroller in proteus isis. Automatic power factor controller using microcontroller. Automatic power factor controller using pic microcontroller.
We measure the main ac voltage and current of load. After measuring these parameters, one can easily design ac watt meter using pic microcontroller. Can any one help me we have also seen in pic microcontroller circuit attached with these. Programming of pic micro controller for power factor correction a project reportunder the guidance ofsignature signature. Apr 20, 2017 automatic power factor corrector using arduino report 1. Pdf a microcontroller based power factor correction pfc converter is. Some tricks such as using resistors instead of potential transformer and using one of the most low cost microcontroller ic atmega8 which also reduce.
The microcontroller executes the program loaded in its flash memory. Power factor is basically due to lag and lead concept of current and voltage. Sreedevi2 department electrical and electronics engineering, r. But the problem is that the load is not stable or missbalancing type load. Measuring of power factor from load is achieved by using pic microcontroller based. Three phase ac power measurement using pic microcontroller. You can use any pic microcontroller that has an adc and enough memory to hold the program.
The phase difference between the two signals is obtained by measuring the on time. Jan 11, 2017 in this project we are going to make a pic based car battery monitoring system on pcb. This involves measuring the power factor value from the load using pic and. We all know what is it and why we need to improve the power factor. Microcontroller pic16f73 can be used instead of pic16f877a. I have already posted about interfacing ds7 rtc with pic microcontroller. It can be find by taking tangent of ratio of time between zero crossing of current and voltage waveforms and two successive zero crossing of voltage waveform. When load is connected the power factor is calculated by the pic microcontroller. Optimal power factor correction for inductive load using pic article pdf available in procedia engineering 38.
As you know demand of electrical energy is increasing day by day. All these calculations are done in programming by writing a code in microcontroller. This thesis describes the design and development of a power factor corrector using pic programmable interface controller microcontroller chip. Measurement of power frequency with higher accuracy using pic. As you know ac power or wattage of any three phase ac equipment is difficult to measure with the help of microcontroller. In addition, power quality includes frequency as a most important index. Ac voltage measurement using pic all about circuits. Pic microcontrollers the basics of c programming language.
Now, by substituting the values of voltage, current, power factor in the above power equation we can measure ac power. Power factor measurement using atmega8 16 engineer experiences. Ac power measurement using pic microcontroller youtube. Its power factor measuring section is correct, but correction is not correct. This note will start by explaining how to correctly power and wire the microcontroller for sensing voltage. Shahid and anwar 20 offered the design of a power factor improvement circuit using pic. Data logging system, load current and voltage, pic microcontroller, microsd card, spi, rtc, i2c. The led is pulsed after every adc acquisition to indicate that the processor is alive so you can tell if the software is active. Dec 07, 2015 hello friends, hope you all are fine and having fun. So to design ac watt meter using pic microcontroller, you should know how to measure ac voltage, ac current and power factor using pic microcontroller.
In this paper measuring of power factor from load is done by using pic microcontroller and trigger required capacitors in order to. How to measure power factor using arduino duration. Measurement of power frequency with higher accuracy using. Power factor correction using pic microcontroller ijeit. The proposed project involves implementation of a apfc unit measuring the power factor value from the load using a microcontroller and improving and correcting the power factor pf. So with the arduino board, we have to calculate the power factor and doing the fast switching in nano second of capacitor bank with the relay by using arduino board. Power factor measurement using atmega8 16 engineer. Then it displays the calculated power factor in the 16g2 lcd display andgswitchesgon the capacitors if required. Design and development of pic microcontroller based 3 phase.
Measurement of power frequency with higher accuracy using pic microcontroller. Us gl volume xiii issue vi ve rsion 31 year 0 2 obal journal of researches in engineering start detect falling edge of aco reset timer detect rising edge of aco read timer value subtract timer value from maximum pulse value for 50 hz convert pulse into phase. Power factor improvement using pic microcontroller. Design and development of pic microcontroller based 3 phase energy meter thousif ahamed1, a. Interfacing dht11 with pic16f877a for temperature and. Ac power measurement meter using pic microcontroller. The ds7 rtc can work either in 24hour mode or 12hour mode with ampm indicator.
Thus, power factor can be calculated using pic microcontroller. How to measure power factor code and circuit diagram of pf meter based on arduino uno r3. The meter used for measuring power factor can be called as power factor meter. Sometimes we take it for granted the important of having an adequate power supply to our microcontroller project and this can lead to the unexpected result or behavior from the circuit. This involves measuring the power factor value from the load using pic and proper algorithm to. Pic 16f877a microcontroller is the heart of this automatic power factor controller, it find, displays and controls the power factor to correct power factor, first we need to find the current power factor. Oct, 2016 can u send me the code for measuring power factor between 0 to 1. A pic microcontroller is a single integrated circuit small enough to fit in the palm of a hand. After which, it is fed to the adc of my mcu and its value measured. I have already shared a lot of tutorials on proteus software on my blog, i will add their links in todays tutorial as well, in.
This measurement system measures the frequency up to three decimal accuracy. This paper deals with digital measurement of power frequency i. As usual, i have this project simulation in which i have to simulate a power factor measuring project using atmega microcontroller. Microcontroller based automatic power factor correction system. Can u send me the code for measuring power factor between 0 to 1. This paper deals with the development of an electronic power factor and phase angle meter using pic microcontroller. Dec 04, 2016 power factor measurement using microcontroller power factor meter using pic microcontroller how to measure power factor using. In alternating current ac, also ac, the flow of electric charge periodically reverses direction. Microcontroller based digital power factor and phase angle meter. Power factor improvement using pic microcontroller projectiot123.
This microcontroller is a very nice microcontroller chip form the. The below list of pic tutorials and pic projects helps you to learn pic series of microcontrollers from very basic level to advanced applications. Now that we have convinced you that microcontrollers are great, there is the question of which microcontroller to use for a given application. Solar energy measurement system conveyed over rf using a pic microcontroller. Proposed system microcontroller base automatic controlling of power factor with load monitoring is shown in fig. Rustemli measured the power factor by using a microcontroller and performed the implementation of compensation by using a capacitor and the simulation 12. During programming, the status box shows the current phase of the.
Automatic power factor improvement by using microcontroller 20 global journals inc. Many control methods for the power factor correction pfc have been proposed. This project applies the peripheral interface controller pic microcontroller to. The power factor of an ac electrical power system is defined as the ratio of the real power flowing to the load, to the apparent power in the circuit,and is a dimensionless number between 1 and 1.
This car battery monitoring circuit is used to monitor the power of car battery by just plugging it into the power outlet on the dashboard of a car. Automatic power factor improvement by using microcon troller. If you are completely new with using pic microcontrollers you can make use of our pic tutorial series to learn how to program and use pic microcontroller, that being said, lets get started. We are using relay driver for switching the different capacitor banks. Three signal values are generated, the first is proportional to the peak value v m of the line voltage vt, the second and third signals are. I want to measure ac power of any general device such as tv, laptop etc using a microcontroller. Lcd 162 display is used for displaying power factor of system.
Apart from the power supply, the only dedicated pins on the atmega16 are reset, external crystaloscillator xtal1 and xtal2, and analog voltage reference aref. The designed dls has been tested with the application program developed in mplab x ide which can write data into sd card at the rate of 5 samples second. The use of distributed generation, the connection of nonlinear loads and the presence of some unexpected system faults are the main causes of frequency variations. Apr 11, 2020 digital clock using pic microcontroller and ds7 rtc. In this idea for design, placing this circuit setup between the battery vdd bus and the pic microcontroller allows you to. We measure the power factor using microcontroller and display the value of power factor on lcd. In the designed circuit, the power factor is measured using pic16f877.
Pic microcontroller projects circuit diagram working. Hello friends, i hope you all are fine and having fun. It can be used to measure either three phase ac power of transformer or three phase generator. In this instructable, i ll show you how to build a pic 16f917microcontrollerprogramming circuit. The power factor correction unit is designed for the measurement of power factor between 0 1 for frequencies up to 500 hz with an accuracy of. So first step down the voltage and step down the current at such extent that the highest peak of current and voltage is not more than 5v. Automatic power factor controller project is designed to improve power factor automatically whenever power factor falls below a certain level. Three phase voltage measurement using pic microcontroller. Inductive loads are main reason for low power factor in power system. The pic microcontroller from microchip is one the famous and most used microcontrollers. Feb 14, 2014 power factor measurement using pic18f4550 what is power factor. A good power supply is an essential subject to the microcontrollers base project.
I am using acs712 current sensor to measure the ac current and then using an optocoupler to isolate it from my mcu. Diy pic microcontroller based car battery voltage monitoring. College of engineering, bangalore, indias1,2 abstract the purpose of this project is to develop a 3phase energy meter, using dspic33f microcontroller and mcp3909. How to design digital ac watt meter using pic microcontroller. Power factor measurement circuit using pic microcontroller. When current waveform lags behinds the voltage by some angle, power factor will be lagging and when current wave form leads the voltage by some angle, power factor will be leading. This paper focuses to design the simple circuit and lowcost. If you have no idea of using ct and pt in the real systems then see the links below. Pdf modeling and simulation of a microcontroller based power. The project work describes the design and development of a power factor corrector using pic microcontroller chip. The current and voltage signals of the load are measured at the.
In conclusion microcontroller based automatic power factor correction. Power factor correction using capacitor banks reduces reactive. Traditional microprocessor circuits contain four or five separate integrated circuits the microprocessor cpu itself, an eprom program memory chip, some ram memory and an inputoutput interface. Automatic power factor corrector using arduino report. Power factor measurement using pic microcontroller. Power factor meter using pic microcontroller how to measure power factor using pic microcontroller.
Power factor measurement using microcontroller the. The architecture of the above mentioned microcontroller is same but in case of 28 pin pic microcontroller the no of interrupts are. When current waveform lags behinds the voltage by some angle, power factor will be lagging and when current wave form leads the voltage by some angle, power factor. This involved sensing and measuring the power factor value from the load using pic and sensors. Programming of pic microcontroller for power factor. In the load simulation board different type of load is present. Pic 16f877a microcontroller is the heart of this automatic power factor controller, it find, displays and controls the. The power factor measurement is defined in terms of import or export. Download books running small motors with pic microcontrollers pdf free. Yadav armietbeeeyr253 under the guidance of alamuri ratnamala. First we will know about ac voltage parameters, then we will do the whole work step by step. This involves sensing and measuring the power factor value from the load using pic and sensors, then using proper algorithm to determine and trigger sufficient switching capacitors in order to.
Power factor is controlled using power factor improving capacitors. This is generally very useful in load frequency control of power system. So, to measure power consumption using pic microcontroller, it is essential to measure voltage using pic microcontroller, measure current using pic microcontroller, and measure power factor using pic microcontroller. Read running small motors with pic microcontrollers pdf. Power factor measurement using pic18f4550 what is power factor. The aim of the study is to develop a prototype of power factor measurement circuit. Pic microcontroller power factor measurement video.
Programming of pic microcontroller for power factor correction. Automatic power factor correction using microcontroller. Mar 27, 2020 we will use this microcontroller to read the values of temperature and humidity using dht11 and display it on an lcd display. Because of its reliability it is commonly preferred by embedded engineers for industrial applications. Microcontroller based active and reactive power measurement. With the mining industry moving from traditional manual methods to the. Barsoum proposed the programming of pic microcontroller for power factor correction that described the design and development of a threephase power factor corrector using pic programmable interface microcontroller chip. Ac voltage measurement using pic16f877a microcontroller.
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