Stability and performance of an autonomous hybrid wind-PV-battery system

Li Wang, Tsung Jen Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

This paper presents small-signal stability, steady-state characteristics, and dynamic performance of an autonomous hybrid wind-PV-battery system feeding an isolated single-phase load. To improve the inherent variable frequency, variable voltage, and loading effects of the studied wind synchronous generator (SG) under random wind speeds, an AC-to-DC converter and a battery system are employed to combine distinct generated energies from the wind SG and a PV module. The stored energy in the battery is converted into a single-phase source with constant voltage and constant frequency to supply isolated single-phase loads by means of a DC-to-DC boost converter and a DC-to-AC inverter. The d-q axis equivalent-circuit models for the SG, AC-to-DC converter, DC-to-AC inverter, DC-to-DC boost converter, PV module, and battery system are respectively derived to establish the complete dynamic system equations of the studied hybrid system. Experimental results obtained from a laboratory 300 W SG, a 24 V, 1.5 kW PV module, and a 24 V, 250 Ah battery system are compared with the simulated results to validate the proposed system model. Small-signal stability of the studied system under various operating points and different disturbance conditions is also carried out by using eigenvalue analysis and dynamic simulations, respectively.

Original languageEnglish
Title of host publication2007 International Conference on Intelligent Systems Applications to Power Systems, ISAP
DOIs
Publication statusPublished - 2007 Dec 1

Publication series

Name2007 International Conference on Intelligent Systems Applications to Power Systems, ISAP

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Energy Engineering and Power Technology
  • Control and Systems Engineering

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