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A fuzzy logic controlled single-stage converter for PV powered lighting system applications

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3 Author(s)
Wu, T.-F. ; Power Electron. Appl. Res. Lab., Nat. Chung Cheng Univ., Chia-Yi, Taiwan ; Chang, C.-H. ; Chen, Y.K.

This paper presents a fuzzy logic controlled single-stage power converter (SSC) for photovoltaic powered lighting system (PPLS) applications. The SSC is the integration of a bidirectional buck-boost charger/discharger and a class-D series resonant parallel loaded inverter. The designed fuzzy logic controller (FLC) can control both the charging and discharging current, and improve its dynamic and steady state performance. Furthermore, a maximum power point tracking (MPPT) scheme based on a perturb-and-observe method is also realized to effectively draw power from photovoltaic arrays. Both of the FLC and the MPPT are implemented on a single-chip microprocessor. Simulated and experimental results obtained from the proposed circuit with an FLC have verified the adaptivity, robustness and feasibility

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Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE  (Volume:3 )

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