International Journal of Power Electronics and Drive System (IJPEDS) Vol.2, No.4, December 2012, pp. 434~444 ISSN: 2088-8694  434 Journal homepage: http://iaesjournal.com/online/index.php/IJPEDS Optimal Design of DC to DC Boost Converter with Closed Loop Control PID Mechanism for High Voltage Photovoltaic Application R. Arulmurugan*, N. Suthanthira Vanitha** * Associate Professor, Department of EEE, Knowledge Institute of Technology, Affiliated to Anna University **Professor and Head, Department of EEE, Knowledge Institute of Technology, Affiliated to Anna University Article Info ABSTRACT Article history: Received Oct 15, 2012 Revised Nov 11, 2012 Accepted Nov 26, 2012 This paper proposes a new dc to dc boost converter using closed loop control proportional Integral and Derivative mechanism for photovoltaic (PV) standalone high voltage applications. The boost converter is composed of MOSFETs which are driven by closed loop PWM control. Many advantages including high efficiency, minimum number of switch, high voltage and power, low cost. This converter is attractive for high voltage and high power applications. The analysis and design considerations of the converter are presented. A prototype was implemented for an application requiring a 410W output power, input voltage range from 17.1-V, and a 317-V output voltage. The proposed system efficiency is about 90%. Keyword: Boost converter Closed loop proportional Integral and derivative control Dc to dc converter High voltage Standalone photovoltaic Copyright © 2012 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: R. Arulmurugan, Associate Professor,Department of EEE, Knowledge Institute of Technology, Affiliated to Anna University Email: arul.lect@gmail.com 1. INTRODUCTION One of the major concerns in the power sector is day-to-day increasing power demand but the unavailability of enough resources to meet the power demand using the conventional energy sources. Demand has increased for renewable sources of energy to be utilized along with conventional systems to meet the energy demand. Renewable sources like wind energy and solar energy are the primary energy sources which are being utilized in this regard. The continuous use of fossil fuels has caused the fossil fuel deposit to be reduced and has drastically affected the environment depleting the biosphere and cumulatively adding to global warming [1-10]. Solar energy is abundantly available that has made it possible to harvest it and utilize it properly. Solar energy can be a standalone generating unit or can be a grid connected generating unit depending on the availability of a grid nearby. Thus it can be used to power rural areas where the availability of grids is very low. Another advantage of using solar energy is the portable operation whenever wherever necessary [2]. Solar Photovoltaic (SPV) cells directly convert sunlight into electricity. Many SPV cells are grouped together to form a module. Modules are normally formed by series connection of SPV cells to get the required output voltage. Modules having large output currents are realized by increasing the surface area of each SPV cell or by connecting several of these in parallel. A SPV array may be either a module or group of modules connected in series/parallel configuration. Output of the SPV array may directly feed loads or may use power electronic converter for further processing [3-8]. These converters may be used to serve different purposes like controlling the power flow in grid connected systems, track the maximum power available from the SPV array. Model of SPV system is therefore required to study and optimize the performance of the complete system including these converters and other connected loads [9, 10]. This paper aims at developing