NDLI: Robust output voltage control of a high gain DC–DC converter under applied load and input voltage uncertainties

Content Provider	IET Digital Library
Author	Akhormeh, Ahmad Reza Naderi Akhormeh, Alireza Naderi Abbaszadeh, Karim
Abstract	In this study, using robust and adaptive approaches, two controllers are designed to compensate for the applied load and input voltage uncertainties of a high voltage gain dc–dc converter. These controllers are designed based on measuring only the output voltage of the converter. The permissible ranges of the uncertainties are calculated using dynamics equations analysis while practical limitations are considered. In the first approach, an input multiplicative uncertainty is considered for the model of the converter by linearisation of non-linear equations as well as using permissible ranges of the uncertainty. Then, a robust H∞ controller is designed. In the second approach, the converter model is considered as a first-order dynamics model with the unknown parameters and an unknown additive term while a direct robust model reference adaptive controller is designed for it. Finally, the non-linear equations of the converter are simulated and the performances of the controllers are compared with each other. The control methods are then implemented on a 200 W prototype of a converter for evaluating the simulations results.
Starting Page	3180
Ending Page	3187
Page Count	8
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 14, Nov (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2020.0156
Journal	IET Power Electronics
Publisher Date	2020-06-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Approach Control Method Control of Electric Power System Control System Analysis Control System Synthesis Converter Model DC-DC Power Converter Direct Robust Model Reference Adaptive Controller Dynamics Equation Analysis First-order Dynamics Model High Voltage Gain DC-DC Converter H∞ Control Input Multiplicative Uncertainty Input Voltage Uncertainties Linearisation Linearisation Technique Load (electric) Load Uncertainty Mathematical Analysis Model Reference Adaptive Control System Nonlinear Equation Optimal Control Power 200 W Robust Control Robust H∞ Controller Design Robust Output Voltage Control Self Adjusting Control System Stability in Control Theory Synthesis Method Uncertain System Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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