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In recent years, fuel cell is gaining more popularity for residential/grid connected applications due to its higher efficiency, cleanliness, modularity and quick startup over other renewable energy sources. But the performance of the fuel cell is affected by its slow response characteristics for sudden changes in load. Therefore, a suitable power conditioning unit is very important for better voltage...
This paper presents the efficient voltage regulation of stand-alone photovoltaic cell for ac voltage application using fuzzy logic controller. The system containing solar PV cell, DC-DC boost converter and inverter coupled to the load system. In this work a 18 V photovoltaic cell is designed. A DC-DC boost converter is used for boosting of DC voltage obtained from photovoltaic cell. The advantage...
A new switching control algorithm based on state trajectory approximation is proposed to regulate the output voltage of a representative second-order DC-DC converter - the boost converter. The essence of the proposed algorithm is to trap the system into a stable limit cycle while ensuring the required voltage regulation. Unlike some of the earlier algorithms, the concept is applicable to both continuous...
This paper presents the modeling of a boost converter operating in pseudo continuous current mode using hybrid automaton and proposes the voltage regulation problem as a hybrid control problem. The pseudo continuous current mode (PCCM) operation is treated as an intermediate stage between the continuous current mode (CCM) and discontinuous current mode (DCM) operation of a boost converter. From hybrid...
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