Voltage control of emerging distribution systems with induction motor loads using robust LQG approach

Roy, N. K.; Pota, H. R.; Mahmud, M. A.; Hossain, M. J.

doi:10.1002/etep.1739

Cited by 19 publications

(11 citation statements)

References 26 publications

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“…One of the main reasons behind the design of a nonlinear controller for power systems is to extend the range of the operation of the controller. Other nonlinear oscillation damping controllers for power systems such as feedback linearized controllers give a good performance, but they have a limited operating range . The control proposed in this paper has a wide range of operation.…”

Section: Power System Controlmentioning

confidence: 99%

Nonlinear robust state feedback control system design for nonlinear uncertain systems

Rehman

Petersen

Pota

2016

Intl J Robust & Nonlinear

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Summary This paper presents a systematic approach to the design of a nonlinear robust dynamic state feedback controller for nonlinear uncertain systems using copies of the plant nonlinearities. The technique is based on the use of integral quadratic constraints and minimax linear quadratic regulator control, and uses a structured uncertainty representation. The approach combines a linear state feedback guaranteed cost controller and copies of the plant nonlinearities to form a robust nonlinear controller with a novel control architecture. A nonlinear state feedback controller is designed for a synchronous machine using the proposed method. The design provides improved stability and transient response in the presence of uncertainty and nonlinearity in the system and also provides a guaranteed bound on the cost function. An automatic voltage regulator to track reference terminal voltage is also provided by a state feedback equivalent robust nonlinear proportional integral controller. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Power System Controlmentioning

confidence: 99%

Nonlinear robust state feedback control system design for nonlinear uncertain systems

Rehman

Petersen

Pota

2016

Intl J Robust & Nonlinear

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“…Thus, robust control is necessary. A linear quadratic Gaussian controller with norm-bounded uncertainty has been found to work well (Roy et al, 2013b).…”

Section: Penetration Of Dgmentioning

confidence: 99%

Control and Communication Techniques for the Smart Grid: An Energy Efficiency Perspective

Law

Pota

Jin

et al. 2014

IFAC Proceedings Volumes

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Energy is a major driver of developments in human society. Naturally, the energy efficiency of power grids qualifies as an important topic. Half a century old, the world's power grids are due for a major overhaul. The envisioned energy-efficient, environment-friendly, distributed-generation-friendly, demand-response-friendly, self-healing power grid is called the smart grid. This article is intended as a primer on the control and communication techniques that form the basis of several smart grid subsystems, namely distributed generation, wide-area monitoring, distribution automation, and substation automation. The theme of this article is to show how these techniques contribute to the efficiency of the generation, transmission, and distribution segments of a grid. Potential research challenges and opportunities are indicated. To complement our technical discussion, noteworthy smart grid developments in Australia (one of the world's top investors in smart grids) are highlighted.

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“…This combination of conventional and renewable sources is called the isolated hybrid power system (IHPS) . Usually, synchronous generators and induction generators are chosen for diesel and wind turbines, respectively . Induction generators are increasingly used in renewable energy systems, particularly in wind power conversion systems.…”

Section: Introductionmentioning

confidence: 99%

Robust distributed control of reactive power in a hybrid wind‐diesel power system with STATCOM

Raouf

Akbarimajd

Dejamkhooy

et al. 2018

Int Trans Electr Energ Syst

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Summary Distributed generation is an interesting way to provide electricity, especially for areas that are far from the electrical grid. Because of the unpredictable nature of renewable sources, centralized control schemes are not reliable. In this paper, a robust distributed controller was designed for an isolated hybrid power system (IHPS) with a static synchronous compensator. To this end, a multi‐unit hybrid wind‐diesel system was investigated. Kharitonov's theorem was used for designing robust PI controller parameters of the IHPS. Moreover, the system stability analysis was conducted by Kharitonov polynomials according to the zero inclusion principle, Hurwitz matrix stability examination, and Mikhail's criterion. By suggesting and accomplishing several scenarios, the performance and robustness of the proposed controller were inspected under different disturbances. For the purpose of ability comparison, the pure PI and fuzzy‐PI controllers tuned by the GWO algorithm were applied. Simulation results showed that dynamic responses of the power system were improved by the proposed controller. Furthermore, the results emphasized that the proposed Kharitonov's theorem‐based controller was robust against large disturbances.

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Voltage control of emerging distribution systems with induction motor loads using robust LQG approach

Cited by 19 publications

References 26 publications

Nonlinear robust state feedback control system design for nonlinear uncertain systems

Nonlinear robust state feedback control system design for nonlinear uncertain systems

Control and Communication Techniques for the Smart Grid: An Energy Efficiency Perspective

Robust distributed control of reactive power in a hybrid wind‐diesel power system with STATCOM

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