A Design Algorithm for Multivariable Linear Quadratic Integral Controllers in Voltage-Source Converters

Lopez-Chavarro, Andres F.; Patarroyo-Montenegro, Juan F.; Sanabria-Torres, Enrique A.; Campo-Ossa, Daniel D.; Vasquez-Plaza, Jesus D.; Andrade, Fabio

doi:10.1109/iecon43393.2020.9254603

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…This control technique's originality is in its new approach, VFOC, which can adjust active power factor in three-phase grid-connected converter systems without estimating or monitoring AC voltage supply signals' phase angles. In order to enhance the performance of the VSC at the input side under load changes and voltage fluctuations and to increase system resilience against parameter changes, nonlinear loads harmonic interference, and other uncertainties [11], d-q decoupling and feedforward components are used. It responds quickly, tracks accurately, is stable, and is resilient in both steady-state and dynamic situations.…”

Section: Vofc Methodsmentioning

confidence: 99%

Analysis of an improved three-phase voltage source converter with high-performance operation under unbalanced conditions

Dai,

Yue

2023

ACE

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The power system is rapidly transforming into a new large-scale distributed power generation model using renewable energy. Grid-connected converters, particularly voltage control compensators like STATCOM, will be crucial to the functioning of this new situation. Voltage source converter (VSC) is one of the most commonly used topologies in grid connection converters. As a distributed power-generating device, VSCs can be utilized as a means of connecting sustainable energy sources to the power grid. The three-phase voltage source currents or voltage ripples may appear in the DC chain. This study examines the enhanced three-phase VSC, pinpoints the factors that contribute to the great performance of VSCs, and looks at future trends in three-phase VSCs. VSC is a power electronic device capable of converting DC voltages to three-phase AC voltages and is commonly used in areas such as grid connection, reactive power compensation and harmonic suppression. In practical applications, various types of grid or load disturbances pose hidden dangers to the normal operation of the VSC. Due to the presence of unbalanced grids and loads, significant double frequency.

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Section: Vofc Methodsmentioning

confidence: 99%

Analysis of an improved three-phase voltage source converter with high-performance operation under unbalanced conditions

Dai,

Yue

2023

ACE

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“…Finally K LQI is the LQI gain matrix that multiplies each output of the multiplexer shown in Figure 7. More information on the design and implementation of this optimal control strategy is provided in [7,8,59].…”

Section: Linear-quadratic-integral (Lqi) Controllermentioning

confidence: 99%

“…These controllers have a cascading architecture where the external control loop is the voltage control loop and the internal loop is the current control loop [4][5][6]. Another solution is to use optimal state feedback controllers such as LQR or LQI in the dq frame [7][8][9]. These control strategies achieve zero steady-state error at selected frequencies and provide a good combination of simplicity and high performance.…”

Section: Introductionmentioning

confidence: 99%

Benchmarking Real-Time Control Platforms Using a Matlab/Simulink Coder with Applications in the Control of DC/AC Switched Power Converters

et al. 2022

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In the control of DC/AC switched power converters (SPC), one of the most important aspects to be considered is the selection of the real-time control platform. The real-time control platform must be able to meet the high performance efficiency and regulation requirements of the DC/AC SPC, as these typically operate at switching frequencies in the order of kHz to MHz. For this reason, the hardware characteristics of the ADC and PWM, and the processing capacity of the real-time control platform are of vital importance when implementing advanced digital controllers that maintain voltage and current levels within regulatory standards. In this context, we aimed to perform a comparative study of the computation times of different real-time control platforms when implementing different control strategies for DC/AC switched power converters. We also analyzed the impact of the real-time control platforms on the THD of the voltages generated by the DC/AC switched power converters. With the help of this paper, researchers and developers will have criteria to select which real-time control platform to use in real-time control for DC/AC SPC applications.

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Noise Mitigation in Control Effort in Three-Phase DC-AC Converters Using LQG-LTR Tracker

Vasquez-Plaza

Patarroyo-Montenegro

Lopez-Chavarro

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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A Design Algorithm for Multivariable Linear Quadratic Integral Controllers in Voltage-Source Converters

Cited by 3 publications

References 14 publications

Analysis of an improved three-phase voltage source converter with high-performance operation under unbalanced conditions

Analysis of an improved three-phase voltage source converter with high-performance operation under unbalanced conditions

Benchmarking Real-Time Control Platforms Using a Matlab/Simulink Coder with Applications in the Control of DC/AC Switched Power Converters

Noise Mitigation in Control Effort in Three-Phase DC-AC Converters Using LQG-LTR Tracker

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