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Download WK808 Capacitive Load Banks for Power Factor Correction with
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WK808 Capacitive Load Banks for Power Factor Correction with Automatic and Manual mode setting This project provides continuous power factor correction using capacitive bank loading. Power factor is a measure of how effectively you are using electricity. Various types of power are at work to provide us with electrical energy. Improving the PF can maximize current-carrying capacity, improve voltage to equipment, reduce power losses, and lower electric bills. The simplest way to improve power factor is to add PF correction capacitors to the electrical system. PF correction capacitors act as reactive current generators. They help offset the non-working power used by inductive loads, thereby improving the power factor. The interaction between PF capacitors and specialized equipment, such as variable speed drives, requires a well designed system. PF correction capacitors can switch on every day when the inductive equipment starts. The most practical and economical power factor correction device is the capacitor. It improves the power factor because the effects of capacitance are exactly opposite from those of inductance. In this project, the capacitors can be connected using manual switches in manual operation mode. In automatic mode, the capacitors are connected through electromagnetic relay with predefined time delay to demonstrate the power factor correction practically. AT89S52 MCU is used to control the switching relays. 16X2 alphanumeric LCD is used to display the status. This project uses regulated 5V, 750mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer. www.wineyard.in WK808 Block Diagram: Capacitive Load Banks for Power Factor Correction with Automatic and Manual mode setting Contrast control AT89S52 MCU ` Power on Reset 16X2 Alphanumeric LCD Relay driver Manual reset Capacitive load bank 1 Relay driver Capacitive load bank 2 Relay driver Capacitive load bank 3 AC Input Inductive Load Power factor meter Crystal Auto Manual Switch Transistor driver ckt Buzzer AC Lamp Load Load bank selection switch Step down T/F Bridge Rectifier Filter Circuit Regulator www.wineyard.in Power supply to all sections
