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This paper presents a three-phase single-stage bidirectional isolated matrix based AC-DC converter for energy storage. The matrix (3 × 1) topology directly converts the three-phase line voltages into high-frequency AC voltage which is subsequently, processed using a high-frequency transformer followed by a controlled rectifier. A modified Space Vector Modulation (SVM) based switching scheme is proposed...
This paper presents a control scheme for a standalone microgrid having a variable-speed wind-generator (W G) and a diesel-generator (DSG) both directly interfaced at a point of common coupling (PCC), and a battery energy storage (BES) interfaced at the PCC via a bidirectional DC-AC converter. The BES not only regulates the PCC voltage and frequency during wind and/or load power variations, but also...
This paper presents control scheme for a standalone microgrid having a non-dispatchable fixed-pitch variable-speed wind turbine generator (WTG) and a battery energy storage (BES). The WTG is directly interfaced at a point of common coupling (PCC) and the BES is interfaced at the PCC via a bidirectional DC-AC converter. The unique aspect of the control strategy is that the BES not only regulates voltage...
This paper proposes a new method to determine the placement and sizing of diesel generators (DGs), photovoltaic solar panels (PV) and batteries for off-grid systems. In this work, our objective is to reduce the total system cost while fulfilling the load demand and mantaining the grid power quality, among other constraints. This is achieved by employing two particle swarm optimization (PSO) algorithms,...
A novel method to track and control the maximum power point (MPP) of the photovoltaic system is proposed in this paper. Using a microprocessor, the proportional and integral (PI) controller for the system is implemented. Linear control methods can be used due to the linearization block that is implemented in the microprocessor. The closed-loop control proposed is robust and provides fast tracking...
An efficient solar energy harvester for low power wireless sensor node is proposed in this paper. In the proposed harvester, maximum power point tracking (MPPT) is achieved by using constant voltage tracking principle. The implementation of the MPPT control circuit is carried out using analog discrete components. This is to minimize the energy consumption in the electronic circuits. Experimental test...
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