Improving the quality of electrical power for off-grid water pumps
Keywords:
Water pumping, Harmonic, flow, filters, THD.Abstract
This study aims to improve the power quality of a water pump operating system powered by a DC supply. The research employed a simulation methodology using Matlab/Simulink software to compare three operating conditions: direct supply from the electrical grid (as the standard), supply from a DC supply without filters, and supply from a DC supply with filters on both the DC and AC sides.
The results showed a significant improvement in power quality, with the Total Harmonic Distortion (THD) decreasing from high values exceeding 25% to only 1.13%, a low percentage compliant with the international standard IEEE-519. The system also maintained a stable voltage of 219.3 V with a near-pure sinusoidal current signal.
This research offers a practical solution to operational challenges in remote areas, ensuring high operating efficiency and protecting the motor from the negative effects of harmonics.
