NDLI: Design and implementation of an optimal switching controller for uninterruptible power supply inverters using adaptive dynamic programming

Content Provider	IET Digital Library
Author	Khiabani, Ataollah Gogani Heydari, Ali
Abstract	In this study, a new approach based on adaptive dynamic programming (ADP) is proposed to control single-phase uninterruptible power supply inverters. The control scheme uses a single function approximator, called critic, to evaluate the optimal cost and determine the optimal switching. After offline training of the critic, which is a function of system states and elapsed time, the resulting optimal weights are used in online control, to get a smooth output AC voltage in a feedback form. Simulations show the desirable performance of this controller with linear and non-linear loads and its relative robustness to parameter uncertainty and disturbances. Furthermore, the proposed controller is upgraded so that the inverter is suitable for single-phase variable frequency drives. Finally, as one of the few studies in the field of ADP, the proposed controllers are implemented on a physical prototype to show the performance in practise.
Starting Page	3068
Ending Page	3076
Page Count	9
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 12, Oct (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.0159
Journal	IET Power Electronics
Publisher Date	2019-06-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Dynamic Programming ADP Called Critic Control of Electric Power System Control Scheme Drive Dynamic Programming Elapsed Time Feedback Function Approximation Interpolation And Function Approximation Inverter Invertors Nonlinear Load Numerical Analysis Offline Training Online Control Optimal Cost Optimal Switching Controller Optimisation Technique Power Converter Power Supplies to Apparatus Resulting Optimal Weight Single Function Approximator Single-phase Uninterruptible Power Supply Inverter Single-phase Variable Frequency Drive Smooth Output AC Voltage System State Uninterruptible Power Supplies Variable Speed Drive
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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