Journal ArticleDOI
Design and implementation of a linear quadratic regulator controlled active power conditioner for effective source utilisation and voltage regulation in low-power wind energy conversion systems
TLDR
In this article, a three-phase modular boost converter supplied from a permanent magnet synchronous generator (PMSG) and controlled using a linear quadratic regulator (LQR) is proposed for battery charging applications.Abstract:
Power electronic converters play a major role in wind energy conversion systems (WECS). A typical variable speed WECS includes wind turbine, permanent magnet synchronous generator (PMSG) and power conditioners. In this study, a three-phase modular boost converter supplied from a PMSG and controlled using a linear quadratic regulator (LQR) is proposed for battery charging applications. Each phase of PMSG is connected to a single phase diode rectifier and a DC–DC boost converter. All boost converters have a common output capacitor and load. The proportional–integral-based voltage controller provides voltage regulation on the DC side. A fixed frequency LQR-based current controller applied for the individual phases provides a better three-phase source utilisation. The instantaneous pq theory is adopted for the reference current calculation. Extensive simulation studies based on the models developed using MATLAB/SIMULINK reveal that the proposed system performs satisfactorily for step variations in wind speed and load. The performance of the low power prototype developed and controlled using a dSPACE 1104 digital signal processor shows good output voltage regulation and better source utilisation for wide variations in load.read more
Citations
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Proceedings ArticleDOI
High-Performance Frequency Converter Controlled Variable-Speed Wind Generator Using Linear-Quadratic Regulator Controller
TL;DR: An optimal control strategy with a view of achieving the best performance of a wind energy conversion system (WECS) depends on the linear-quadratic regulator (LQR) algorithm, which provides a fast convergence and less mathematical intricacy.
Journal ArticleDOI
Control and power transfer operation of WRIG-based WECS in a hybrid AC/DC microgrid
TL;DR: The dynamic operation is experimentally analysed to confirm the efficacious working of the WECS and a supervisory control algorithm is developed for executing smooth power transfer.
Journal ArticleDOI
Modified LQR Technique for Fuel-Cell-Integrated Boost Converter
TL;DR: A M-LQR-based scheme is found to outperform the classical m-L QR technique in terms of improved transient dynamics and reduced offset at the steady state and the proposed control techniques have been validated experimentally.
Journal ArticleDOI
Reduced order linear quadratic regulator controller for voltage multiplier cells integrated boost converter
TL;DR: An optimal reduced order linear quadratic regulator controller for a reduced order model of a voltage multiplier cell (VMC) integrated boost converter with two sensors for measuring the output voltage and the input inductor current is proposed.
Proceedings ArticleDOI
Power Quality Improvement of Standalone Wind Energy Generation System for Non Linear Load
TL;DR: The demonstrated results show that suggested system successfully mitigates harmonics as per IEEE 519-1992 standards.
References
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Book
Fundamentals of Power Electronics
TL;DR: Converters in Equilibrium, Steady-State Equivalent Circuit Modeling, Losses, and Efficiency, and Power and Harmonics in Nonsinusoidal Systems.
Book
Instantaneous power theory and applications to power conditioning
TL;DR: The p-q theory in three-phase, four-wire Shunt Active Filters as discussed by the authors has been applied to power flow control in power electronics equipment and has been shown to be useful in many applications.
Journal ArticleDOI
Design of a maximum power tracking system for wind-energy-conversion applications
TL;DR: Experimental results of the proposed MPPT system indicate near-optimal WG output power, increased by 11%-50% compared to a WG directly connected via a rectifier to the battery bank, and better exploitation of the available wind energy is achieved, especially under low wind speeds.
Journal ArticleDOI
Power Electronics Converters for Wind Turbine Systems
TL;DR: In this paper, power converters are classified into single and multicell topologies, with attention to series connection and parallel connection either electrical or magnetic ones (multiphase/windings machines/transformers).
Journal ArticleDOI
Generalized instantaneous reactive power theory for three-phase power systems
Fang Zheng Peng,Jih-Sheng Lai +1 more
TL;DR: In this paper, a generalized theory of instantaneous reactive power for three-phase power systems is proposed, which is valid for sinusoidal or nonsinusoidal, balanced or unbalanced, three phase power systems with or without zero-sequence currents and/or voltages.