NDLI: Robust pole placement for power systems using two-dimensional membership fuzzy constrained controllers

Content Provider	IET Digital Library
Author	Soliman, Hisham M. Metwally, Khaled A. El
Abstract	This study presents a design method of power system stabilisers (PSSs) to damp system oscillations. The design is based on fuzzy logic and linear matrix inequality (LMI) techniques. The design guarantees a robust pole placement in a desired region in the complex plane for different loading conditions. Due to system non-linearity and load dependency, the whole wide range of operating condition is divided into three subregions. For each subregion, a norm-bounded uncertainty linear model is developed and a robust LMI-based pole placer is designed considering controller constraint. Takagi–Sugeno fuzzy model is used to guarantee smoothly switching between the LMI-based controllers of the three subregions. The proposed technique avoids solving many LMIs as in the polytypic approach and avoids the infeasibility problem that might arise from solving the LMIs for the complete region of operation. In addition, the proposed fuzzy logic switching controller has reduced drastically the fuzzy rules due to the use of two-dimensional (2D) membership functions. Particle swarm optimisation is used to tune the proposed 2D membership functions to guarantee smooth switching of the controllers while maintaining the desired constraints. The simulation results of both single-machine and multi-machine power systems confirm the effectiveness of the proposed PSS design.
Starting Page	3966
Ending Page	3973
Page Count	8
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 16, Nov (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.2064
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-07-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Complex Plane Control of Electric Power System Fuzzy Control Fuzzy Logic Switching Controller Heavy Load Infeasibility Problem Light Load Linear Matrix Inequalities Linear Matrix Inequality Technique LMI Technique LMI-based Controller Load Dependency Multimachine Power System Nominal Load Norm-bounded Uncertainty Linear Model Polytypic Approach Power System Control Power System Stabilisers Power System Stability PSS Design Method Robust LMI-based Pole Placer Robust Pole Placement Single-machine Power System System Nonlinearity System Oscillation Damp;ing Takagi-Sugeno Fuzzy Model Two-dimensional Membership Function Two-dimensional Membership Fuzzy Constrained Controller
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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