A modified discrete control law for UPS applications

This paper presents a model reference controller with a repetitive control action for uninterruptible power supply (UPS) applications. The model reference controller modifies the structure of the plant so that the closed-loop transfer function is equal to a chosen reference model transfer function,...

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Veröffentlicht in:IEEE transactions on power electronics 2003-09, Vol.18 (5), p.1138-1145
Hauptverfasser: Rech, C., Pinheiro, H., Grundling, H.A., Hey, H.L., Pinheiro, J.R.
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container_issue 5
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creator Rech, C.
Pinheiro, H.
Grundling, H.A.
Hey, H.L.
Pinheiro, J.R.
description This paper presents a model reference controller with a repetitive control action for uninterruptible power supply (UPS) applications. The model reference controller modifies the structure of the plant so that the closed-loop transfer function is equal to a chosen reference model transfer function, whereas the repetitive control action minimizes periodic distortions caused by unknown periodic disturbances. Design procedure and stability analysis of the control scheme are discussed. Simulation and experimental results for a single-phase PWM inverter (110 V/sub RMS/, 1 kVA) controlled by a low cost microcontroller are presented to verify the performance of the proposed control approach under different load conditions.
doi_str_mv 10.1109/TPEL.2003.816187
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1941-0107
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subjects Costs
Digital control
Distortion
Disturbances
Electronics
Frequency
Microcontrollers
Model reference
Power harmonic filters
Pulse duration modulation
Pulse width modulation inverters
Repetitive control
Stability analysis
Surge protectors
Transfer functions
Uninterruptible power systems
UPS
Voltage control
title A modified discrete control law for UPS applications
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