Abstract
The paper presents a shunt hybrid active power filter for 1 kV mining applications in configuration with a single-tuned passive filter. The focus is on the method of controlling the filter, with particular emphasis on the influence of network voltage distortion and time delays in control on the effectiveness of harmonic reduction, which is one of the most important aspect of power quality. The low-power loss configuration of a hybrid filter with SiC transistors is shown, as well as the control algorithm which limits the influence of voltage distortion. Theoretical considerations are verified by results obtained from simulations and tests of the hybrid active power filter prototype.
Highlights
Problems related to the power quality (PQ) in distribution grids have been known for many years
The use of the active power filters (APF) for hybrid active power filters (HAPF) filters in the mining electrical grid may contribute to the reduction of conducted and radiated EMC disturbances by eliminating harmonics in Energies 2021, 14, 4994 the grid currents and voltages
One of the most important issues in the practical realization of active power filters and hybrid active power filters is the reduction of the time delay in the control system [64,65,66]
Summary
Problems related to the power quality (PQ) in distribution grids have been known for many years. The use of the APF for HAPF filters in the mining electrical grid may contribute to the reduction of conducted and radiated EMC disturbances by eliminating harmonics in Energies 2021, 14, 4994 the grid currents and voltages. It should reduce the number of interruptions and disturbances in the operation of atmosphere parameter monitoring systems, increasing the level of safety of mine workers [53,54]. All the proposed solutions have been confirmed by the results of experimental studies
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