Input Parallel Output-Series Connected DC-DC Converter Using Stable Control Scheme With Modified Connection in Output Filter Circuit

ABSTRACT: Input-Parallel Output-Series (IPOS) based combined converter is mostly used in the condition such as low voltage high current at the input  side and high voltage  low current at the output side to satisfy the requirements in switch stress reduction and po

Project Title

Input Parallel Output-Series Connected DC-DC Converter Using Stable Control Scheme With Modified Connection in Output Filter Circuit

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

ABSTRACT:

Input-Parallel Output-Series (IPOS) based combined converter is mostly used in the condition such as low voltage high current at the input  side and high voltage  low current at the output side to satisfy the requirements in switch stress reduction and power expansion. In a such system, at the output side the voltage balance of filter capacitor and at input side the sharing current usually used to guarantee of control and conversion system. In this project, IPOS connected half boost bridge DC-DC converter with modified connection in output filter circuit for the large variation in output voltage is proposed  which is advantage to decrease ripple current of filter inductor Significantly. A stable control has been used. The main purpose of the control scheme is to maintain equal Input Current  Sharing and Output Voltage Sharing with feedback close loop system so that any chances of error occurrence due to load variation   will be rectified. Therefore, the relationship between Input Current Sharing and Output Voltage Sharing has been developed. There are many application of high voltages and low current such as  in residential, industrial and aerospace environments and other in renewable energy generation, high voltage pulses etc. In order to verify the control objective, the IPOS configuration of Boost Half Bridge (BHB) DC-DC converter is simulated on MATLAB using SIMPOWER tools and hardware model developed to verify condition practically.

PROBLEM STATEMENT:

The main idea of this input parallel, output series (IPOS) connection is to overcome the losses occurs in case of one DC-DC boost converter, single converter has problem includes large current stress at the input side and high voltage stress at the output side, which may cause  large switching stresses on the devices due to high voltages, amplitude fluctuation of ripple current and high losses. Another problem with single boost dc converters is that for higher output voltages we must require according to input voltages causes increasing more loss and more cost. Therefore, by using this configuration (IPOS), rapid dynamic response, low cost boost converters, and high efficiency  converter can be developed. These advantages can be achieved.

Project Objectives

The configuration proposed in our project for DC-DC converter is Input parallel                                      output series (IPOS) with the stable control scheme. Following are the objectives of our project;

• To overcome the losses occurs in single DC-DC converter.
• To get high voltage at output side by series combination of number of converters.
• To achieve input current sharing and load voltage sharing under steady state condition.
• To minimize the weight  cost of power converter (by using filter inductor).

Project Implementation Method

Firstly, we will connect DC source at the Input Parallel side of converters and series connection of the converter at the load side. In the output side we will connect the filter for the balance and reduction of ripple current at the input side[5]. After that, on the primary side of the high-frequency transformer the boost, half bridge with an inductor will be connected, on the secondary side high-frequency transformer the voltage doubler rectifier connected for the first module of dc converter, same procedure will be continue for the second module of dc converter. Further, for the individual module, the turn ration of the high-frequency transformer is set to be 1:2. Then, by varying different load condition to see behavior of output voltage by operating system.

Benefits of the Project

•  This project can provide high voltage pulses output, therefore, it used in medical purpose for killing microorganism.
• Benefits of the project that it can used space for batteries therefore reduce cost of batteries
• This  project reduce the number of solar panels, it boost up solar power.
• everywhere human safety is first. Therefore, this project will provide isolation between source and load voltages. 

Technical Details of Final Deliverable

• Final project will produce higher dc output voltage from lower input dc voltage with control manner.
• This project will help in reducing capacity of solar panel by boosting lower voltages into higher voltages.
• By this project the space of battereis reduce.
• This project will provide twice dc output voltages from the single source with IPOS Configuration.
• when this work will be complete, it helps other students who interested in this research area and futher improve boost converters.

Final Deliverable of the Project

Hardware System

Core Industry

Energy

Other Industries

Medical , Transportation

Core Technology

Others

Other Technologies

Sustainable Development Goals

Affordable and Clean Energy, Industry, Innovation and Infrastructure

Required Resources

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