NDLI: Design approach of discrete-time resonant controllers for uninterruptible power supply applications through frequency response analysis

Content Provider	IET Digital Library
Author	Carballo, Roberto Esteban Botterón, Fernando Oggier, Germán Gustavo García, Guillermo Oscar
Abstract	A new methodology to design discrete-time multiple resonant controllers for single-phase uninterruptible power supply inverters is proposed in this study. This methodology is based on classical linear tools and consists on the synthesis of the inverter output impedance according to standard specifications. This synthesis is performed using a multi-loop control strategy composed of an inner current control loop using a proportional controller, and an outer voltage control loop using the multiple resonant controller. A prototype was built to demonstrate the practical feasibility of the theoretical proposal. A significant reduction of the output impedance at determined harmonic frequencies resulted in a low-voltage total harmonic distortion of the output voltage of about 1.76%, for IEC 62040-3 reference non-linear load.
Starting Page	2871
Ending Page	2879
Page Count	9
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 15, Dec (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.1059
Journal	IET Power Electronics
Publisher Date	2016-12-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Control System Analysis Control System Synthesis Current Control Discrete Control System Discrete Time System Discrete-time Resonant Controller Design Electric Current Control Frequency Response Frequency Response Analysis Harmonic Distortion Harmonic Frequency IEC 62040-3 Reference Nonlinear Load Inner Current Control Loop Inverter Output Impedance Invertors Low-voltage Total Harmonic Distortion Multiloop Control Strategy Outer Voltage Control Loop Output Impedance Reduction Proportional Control Proportional Controller Single-phase Uninterruptible Power Supply Inverter Synthesis Method Uninterruptible Power Supplies Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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