Abstract
This paper addresses a control algorithm to determine the reference currents indirectly from the grid voltages, taking into account the limited capacity of the power converter for compensating, entirely, the selected harmonic current. In previous works, the reference current was indirectly determined based on an average component correlated with the selected harmonic current. Thus, when the selected harmonic current was entirely compensated, that average value was decreased to zero. Now, this paper introduces a novel control algorithm considering the limited capacity of the power converter for producing the selected harmonic current. In this novel condition, the phase-angle of the reference current is dynamically modified while the minimum point of the cost function is not reached. The remaining parameters of the reference currents correspond to the harmonic frequency and amplitude as well. The harmonic frequency was identified through a PLL (Phase-Locked-Loop) circuit whereas the amplitude corresponds to a specific value of 10A to all of the developed test cases. Other aspects of the simulated power circuit, control algorithms, including the optimization methods, are described throughout the paper. Simulation results involving different test cases were implemented to verify the performance of the proposed algorithm compensating of the fifth-harmonic component under transient -and steady-state conditions.
“This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001”.
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Oliveira, N.V., Freitas, C.M., Monteiro, L.F.C. (2019). A Selective Harmonic Compensation with Current Limiting Algorithm. In: Afonso, J., Monteiro, V., Pinto, J. (eds) Green Energy and Networking. GreeNets 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 269. Springer, Cham. https://doi.org/10.1007/978-3-030-12950-7_9
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