TY - GEN
T1 - Stability and performance of an autonomous hybrid wind-PV-battery system
AU - Wang, Li
AU - Lin, Tsung Jen
PY - 2007/12/1
Y1 - 2007/12/1
N2 - 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.
AB - 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.
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U2 - 10.1109/ISAP.2007.4441622
DO - 10.1109/ISAP.2007.4441622
M3 - Conference contribution
AN - SCOPUS:50249088889
SN - 9860130868
SN - 9789860130867
T3 - 2007 International Conference on Intelligent Systems Applications to Power Systems, ISAP
BT - 2007 International Conference on Intelligent Systems Applications to Power Systems, ISAP
ER -