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This paper proposes an improved synergetic excitation controller (ISEC) for synchronous generator in order to not only improve transient stability but also obtain good voltage regulation performances of power systems. According to the control objective, a manifold is chosen as a linear combination of the deviation of generator terminal voltage, rotor speed and active power for the synthesis of the...
This letter presents a modulation technique for the modified coupled-inductor single-stage boost inverter (CL-SSBI)-based grid-connected photovoltaic (PV) system. This technique can reduce the system leakage current in a great deal and can meet the VDE0126-1-1 standard. To maintain the advantages of the impedance network, only a diode is added in the front of the original topology, to block the leakage...
This paper proposes one type of photovoltaic power (PV) system with single-stage boost inverter. The single-stage inverter circuit provides boost inversion ability which can eliminate the limitations of conventional voltage source inverter. By regulating the shoot-through zero state and the parameters of coupled inductor, the proposed inverter can boost the bus voltage and output desired output voltage...
This paper presents an implementation of a radio frequency wave energy harvester with the capability of self-adjusting the matching network to adapt to changing load conditions. An auxiliary charge-pump is designed to supply the power for the supplemental control unit. The design is implemented in a standard 0.13-µm CMOS process. The results show that the power transfer efficiency with using the proposed...
A novel multi-protocol RFID reader with automatic power control is proposed in this paper based on a software defined radio architecture. The transponder power consumption variation over time is considered for different protocols. The modulation effect of power control on forward data transmission is included in the analysis. The emission power of the reader is automatically tuned in real-time according...
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