Supervisory Control Architecture for Standalone Solar Photo-Voltaic Power Generation System

Venkatramanan, D and John, Vinod (2018) Supervisory Control Architecture for Standalone Solar Photo-Voltaic Power Generation System. In: 10th IEEE Annual Energy Conversion Congress and Exposition (ECCE), SEP 23-27, 2018, Portland, OR, pp. 6688-6695.

PDF Iee_Ene_Con_Con_Exp_6688_2018.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Solar Photo-Voltaic (SPV) based power generation system is an attractive alternative to diesel based counterparts for standalone or dual-mode AC micro-grids. Typically, a suitably sized battery-based energy storage system is required alongside PV that supplies power when solar energy and the grid are unavailable. In this work, a supervisory control architecture is proposed for the operation of such an SPV micro-grid system with battery storage. Three sub-modes of operation of the SPV converter, namely, Charger (CHGR), Maximum Power Point Tracking (MPPT) and Virtual Battery Emulation (VBE) modes are deployed to suitably control the system and manage power flow under varying conditions of battery voltage, load power, and solar insolation. The novel VBE mode emulates a parallel battery bank with the aid of the SPV converter and its appropriate control. This reduces the battery discharge and thus ensuring the extension of its cycle life. A finite state machine is presented that facilitates digital implementation of the proposed supervisory control scheme. Experimental results of various modes on a 1.2 kW SPV system prototype are presented for performance verification.

Item Type:	Conference Paper
Series.:	IEEE Energy Conversion Congress and Exposition
Publisher:	IEEE
Additional Information:	10th IEEE Annual Energy Conversion Congress and Exposition (ECCE), Portland, OR, SEP 23-27, 2018
Keywords:	Solar PV; battery charging; MPPT; buck converter; battery emulation; supervisory control
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	07 Feb 2019 04:51
Last Modified:	07 Feb 2019 04:51
URI:	http://eprints.iisc.ac.in/id/eprint/61613

Actions (login required)

View Item