ABSTRACT:
This paper
presents a single-phase Shunt Active Filter combined with a Maximum Power Point
Tracker (MPPT) connected to a solar panel array. The Shunt Active Filter’s power
stage consists of a two-leg IGBT inverter commanded by a Digital Signal
Processor (DSP) with control based on the Theory of Instantaneous Reactive
Power (p-q Theory). The MPPT is based on a step-up circuit commanded by a DSP
with MPPT Algorithm implemented. The output of the MPPT circuit is connected to
the DC side of the Shunt Active Filter. The system is capable of compensating
power factor and current harmonics, and at the same time, using the same
inverter, injecting in the power grid electric energy produced by solar panels,
regulated by the MPPT. There will be presented results of the system operating
in an electrical installation under different conditions, as well as the
hardware configuration and specifications.
SOFTWARE: MATLAB/SIMULINK
CONCLUSION:
This paper presented experimental
results of a single-phase Shunt Active Filter combined with a MPPT, injecting
energy in the electric grid produced by a solar panel array. The results show
the performance of the Shunt Active Filter operating alone, and also the
complete system behavior in compensation and energy injection tasks
simultaneously. The presented configuration shows some advantages over the
traditional ones since it gathers functionalities of different equipments using
the same hardware to accomplish the different tasks. The only drawback of the
presented configuration is that the power inverter has to be increased because
the injected current is composed by two components: a component that represents
the renewable energy to inject in the electric grid and a component to
compensate harmonics and power factor of the facility.The presented Active
Power Filters are currently in industrialization process by the company EFACEC
SGPS S.A.
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on Renewable Energies and Power Quality, 28-30 March 2007, Seville, Spain, ISBN:978-84-611-4707-6.
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