| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 90 === This thesis presents the results of a study on integration of a permanent magnet generator (PMG)/a synchronous generator (SG) and a PV System. A PMG and a SG are respectively utilized as a wind generator. To improve variable frequency, variable voltage, and loading effects of both generators under random wind speeds, a rectifier module and a battery system are employed to combine both PV and wind systems. The stored energy in the battery system is converted into constant voltage and constant frequency by means of an inverter module to supply isolated loads or connect to a utility grid.
A d-q axis equivalent-circuit machine model is employed to establish the PMG, SG, rectifier, inverter, PV, and battery models in order to derive the complete dynamic equations of the studied system under three-phase balanced loading conditions. The derived system model is also employed to obtain system eigenvalues to determine dynamic stability. Experimental results obtained from a laboratory 500 W PMG, a 300 W SG, a 1.5 kW PV system, a 24 V battery system, and a 4.5 kW inverter module are compared with the simulated results to validate feasibility of the proposed models.
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