Modelling and Simulation of Photovoltaic System Fed Two Input Two Output DC-DC Boost Converter Interfaced with Asymmetric Cascaded H-Bridge Multilevel Inverter

Objectives: Multiple Input Multiple Output dc-dc boost converters is used to interface diversified renewable energy sources to Asymmetric Cascaded H-Bridge Multilevel Inverter whose output voltages can be connected to the grid system. The compensators and/or controllers are required to provide the constant output voltages of the boost converter against disturbances along with desired time domain specifications. In this paper, two input two output dc-dc boost converter is developed to interface with seven level multilevel inverter. Methods/Statistical Analysis: One of the input sources is replaced by Photovoltaic panel and Incremental Conductance based Maximum Power Point Tracking Algorithm is developed to improve the efficiency of the system. Compensators are designed to maintain the constant output voltages of the converter against disturbances using transfer function model obtained from developed small signal model of the converter. The developed system is simulated using MATLAB /Simulink and the total harmonic distortion in the output voltage of the inverter is observed .The simulated closed loop output voltages of the dc-dc converter are validated by developing prototype model of the converter using AT 89C51 microcontroller. Findings: It is found that the two input two output dc-dc converter provides constant dc voltages to the asymmetric multilevel inverter from the diversified energy sources with improved time domain specifications using compensators. Application/Improvements: The designed system is having the applications in renewable power system, aerospace power systems and hybrid energy vehicle.

[1]  D. Elangovan,et al.  A Small Signal Analysis of DC-DC Boost Converter , 2015 .

[2]  R. Mahalakshmi,et al.  Implementation of Grid Connected PV array using Quadratic DC-DC Converter and Single Phase Multi Level Inverter , 2015 .

[3]  Reza Ahmadi,et al.  Double-Input Converters Based on H-Bridge Cells: Derivation, Small-Signal Modeling, and Power Sharing Analysis , 2012, IEEE Transactions on Circuits and Systems I: Regular Papers.

[4]  H. Benalla,et al.  MODELING AND CONTROL OF A SINGLE-PHASE GRID CONNECTED PHOTOVOLTAIC SYSTEM , 2012 .

[5]  R. Seyezhai,et al.  Hybrid Multilevel Inverter using ISPWM Technique for Fuel Cell Applications , 2010 .

[6]  Lewlyn L R Rodrigues,et al.  Controlling Process Factors to Optimize Surface Quality in Drilling of GFRP Composites by Integrating DoE, ANOVA and RSM Techniques , 2015 .

[7]  Jiann-Fuh Chen,et al.  Novel maximum-power-point-tracking controller for photovoltaic energy conversion system , 2001, IEEE Trans. Ind. Electron..

[8]  G. Sciutto,et al.  A new multilevel PWM method: a theoretical analysis , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[9]  Nishant Doshi,et al.  Width of a Binary Tree , 2010 .

[10]  N Hamrouni,et al.  Modelling and control of a grid connected photovoltaic system , 2007 .

[11]  Yaow-Ming Chen,et al.  A Systematic Approach to Synthesizing Multi-Input DC/DC Converters , 2007, 2007 IEEE Power Electronics Specialists Conference.

[12]  A. Davoudi,et al.  A Multiple-Input Multiple-Output DC–DC Converter , 2013, IEEE Transactions on Industry Applications.

[13]  Jorge L. Duarte,et al.  Family of multiport bidirectional DC¿DC converters , 2006 .

[14]  Nagisetty Sridhar,et al.  Modeling and Simulation of Controller for Single Phase and Three Phase PWM Rectifiers , 2015 .

[15]  Hans S. Rauschenbach,et al.  Solar-cell array design handbook , 1980 .