Design and analysis of grid tied renewable energy system based E-chopper using main controller

Abstract

The primary aim of this research article regulates the power of Embedded Chopper \ (e-chopper) through PI (proportional and integral) controller to maintain constant output from non-reliable variable input. The operation of e-chopper plays an important role to transfer power from primary sources of wind & solar to load and secondary source of the grid to the battery by means of closed-loop operation. When the input is getting from primary source from the e-chopper operates in boost mode and also maintains buck mode when the secondary source charges the battery, which is controlled by Digital Signal Peripheral Interface controller (DSPIC) controller with another PI control structure. Obtains better regulation and operation of whole system for intermittent nature of renewable energy sources of wind and solar, Proper modes of operation requires effective maintenance & efficient utilization of power from both the side to control the system operation in a systematic way. It maintains the constant voltage of the system for reliable operation through an intelligent approach in a systematic way. Hence to obtain this, Main Controller (CLC) is introduced to control the modes of operation in closed-loop structure. Speedgoat real-time objective mechanism plays the role of CLC; it can operate the entire scheme in different modes of operation. Modes are depending on some input parameters like wind velocity (v) in m/s, solar output (Ir), load condition (1/0) & battery state of charge (SOC). Based on these conditions Main controller has to control the modes of operation in an intelligent approach. This system of approach is very much helpful for agriculture irrigation and lighting applications.