The main aim of the project is switched inductor Cuk converter based improved power Quality AC-DC converter for battery charging application. In this project, a single- stage switched inductor Cuk converter-based power factor correction converter is proposed which offers high step-down gain, low current stress, and high efficiency and reduced component counts. The power quality measured by THD and PF at AC side to estimate the power quality performance of the converter. THD stands for Total Harmonic Distortion. The level of harmonic distortion is often used to define the degree of harmonic content in an alternating signal. The performance investigation of proposed converter measures the power quality like voltage THD, current THD and total power factor are carried out with various types of loads

Mode-1: At the time instant t=0, when switch mosfet, turns ON, diodes D1, D2 turn off. The inductor current increase from their respective initial value. Therefore, this mode is called as inductor charging mode.

Mode-2: When switch MOSFET turns off at t, the diodes D1, D2 turns on. The equivalent circuit depicting current paths.   Finally, the design of switched inductor-based PFC converter includes selection of circuit parameters such as inductors, and capacitors. This converter is designed to provide regulated DC output voltage with power factor correction at the AC supply mains and operates in continuous current mode (CCM) in all operating conditions. In this project we are using PIC Microcontroller to trigger the MOSFET. The system can be programmed using Embedded ‘C’ language.            

Features:

• Conversion of the Alternating current to Direct current.
• Usage of CUK converter.
• Usage of power factor
• Using PIC Microcontroller to trigger the Mosfet.

           

The major building blocks of this project are:

• Adapter
• Cuk converter
• MOSFET
• Diode Bridge Rectifier,
• Power Factor Correction,
• Battery charging

         

Software Used:

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3.  Express SCH for Circuit design.

       

Regulated Power Supply:

                   

Block Diagram:

                     

video: