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We consider the problem of controlling single‐phase half‐bridge power converters in UPS systems operating in the presence of changing load. The control objective is twofold: (i) ensuring a satisfactory power factor correction (PFC) at the grid–UPS connection; (ii) guaranteeing a tight regulation of the DC bus voltage and the half‐bridge inverter output voltage despite changes in load. The considered...
The problem of controlling single-phase half bridge shunt active power filter (HBSAPF) is addressed in this paper in presence of nonlinear loads of rectifier type. The control objective is twofold: (i) compensation of harmonic currents and the reactive power absorbed by the nonlinear load; (ii) regulation the DC bus voltage of the inverter. First an adaptive observer is designed to estimate the network...
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