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Research Article

JCR. 2020; 7(8): 3381-3388


DESIGN OF THREE PHASE PHOTOVOLATIC INVERTER UNDER BALANCED GRID VOLTAGES USING PR CONTROLLER

Kodem. Chandra Mouli, Dr. Subhashish Boss.

Abstract
This paper proposed a technique to design a three phase photovoltaic inverter under balanced grid voltages using PR controller.PR controller is a high performance and critical device because it can be operated at same performance even at various frequency ranges (i.e.) above two phase or three phase. In order to maintain its performance and also to prevent any mishap due to its high voltage, we need a feedback system to control the voltage and current flowing. In general PR controller has inbuilt transfer function which can control the current injected in to the photovoltaic grid system. In this paper we are going to control and design three phase photovoltaic inverter using proportional resonant controller. Proportional resonant controller system uses the inbuilt positional functions for reducing noise in sine wave signal. Hence any error or noise captured by the PI controller will be controlled and it will make decision to attain balanced voltagefor its precision overfrequency and current. The controller will always deals with sine waves hence we will using this PI controller to achieve infinite gain at zero frequency. Based on the output predicted by comparing the required gain and achieved gain, the controller will control the three phase inverter. Controller is the main component of the three phase inverter system which in turn take responsible to control, maintain, and prevent any nonlinear or inconsistent system.

Key words: Inverter, Three Phase, Controller, frequency, gain, photovoltaic



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