Adaptive Passivity-Based Control of a DC–DC Boost Power Converter Supplying Constant Power and Constant Voltage Loads

Hassan, Mustafa Alrayah; Su, Chun‐Lien; Chen, Fu-Zen; Lo, Kuo-Yuan

doi:10.1109/tie.2021.3086723

Cited by 54 publications

(24 citation statements)

References 41 publications

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“…In the fuel cell unit, boost converter switch [15] is controlled using voltage constant (VC) feedback control which operates using reference voltage Vref. This Vref value is given as per the required voltage at the DC link which is determined as per the maximum voltage of the 3-ph grid.…”

Section: Renewable Micro Grid Configurationmentioning

confidence: 99%

Voltage and frequency stabilization by fuzzy integrated droop control of a multi renewable source micro grid

Swathi

Kumar

Upendar

2023

IJEECS

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A multi renewable source micro-grid system has many power quality issues when it is operated in grid islanding condition. During grid connected mode the voltage and frequency of the system will remain stable for small disturbances like load changes or environmental changes. During these sudden variations in the system, the grid supports the load maintaining the system stable. In this paper a droop control is introduced for the renewable source module 3-ph inverter during standalone mode supporting the load. For detection of grid islanding, an active islanding detection control is adopted which makes the 3-ph inverter to shift from synchronous reference frame (SRF) control to droop control. The performance of the droop control is improvised with fuzzy interference structure (FIS) module replacing the conventional proportional integral and derivative (PID) control. A comparative analysis is done in this paper with different controllers in droop control scheme using matrix laboratory (MATLAB) Simulink software. Stability analysis is carried out on the system determining the voltage and frequency fluctuations during grid disturbances. There is an improvement in load compensation, voltage ripple, voltage magnitude, frequency ripple and settling time with the introduced fuzzy droop controller.

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Section: Renewable Micro Grid Configurationmentioning

confidence: 99%

Voltage and frequency stabilization by fuzzy integrated droop control of a multi renewable source micro grid

Swathi

Kumar

Upendar

2023

IJEECS

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“…In a large-signal sense, numerous nonlinear strategies such as feedback-linearisation technique [9,10], sliding-mode control method [11,12], backstepping control technique [13,14], combination of sliding-mode with backstepping control [15], model predictive control [16,17], the fuzzy method [18], the combination of fuzzy with model predictive control [19], deep reinforcement learning method [20], passivity-based control [21] have been conducted to minimise destabilisation effects of CPLs on the DC microgrids. It can be observed that the represented schemes [9][10][11][12][13][14][15][16][17][18][19][20][21] stabilise the entire power system with an asymptotical convergence rate in infinite time, which may not be adequate for abrupt changes in various system operating states and stepwise load variations. One way of overcoming this challenge is to establish a finite-time control strategy, which not only accelerates the converging speed but also provides strong robustness in the face of uncertainties, and improves disturbance attenuation.…”

Section: Introductionmentioning

confidence: 99%

A novel fixed‐time dynamic surface DC/DC SEPIC converter controller loaded by uncertain buck‐based constant power loads

Sarrafan

Horiyat

Zarei

et al. 2022

IET Power Electronics

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The stability analysis of the single‐ended primary‐inductor converter DC/DC converters feeding constant power loads (CPLs) is of major importance. The nonlinear behaviour of CPLs and their negative incremental impedance, which impose adverse effects on system damping and stability margins, necessitate developing proper strategies for an efficient implementation framework of DC microgrid. In this paper, a fixed‐time sliding mode disturbance observer is first addressed to provide an estimation of the power flow moving along the uncertain CPLs with time‐varying nature within a fixed time. It not only expedites the estimation rate but also improves the robustness against physical parameter variation. The fixed‐time dynamic surface control law is then developed based on the estimated load power for the duty cycle of the switch such that the entire power grid becomes stable and the desired voltage of the DC bus is tracked within a fixed time irrespective of the initial conditions. A rigorous Lyapunov‐based approach is represented to guarantee the semi‐global fixed‐time uniform ultimate boundedness of the proposed scheme. Finally, in order to verify the proposed methodology's strengths, Model‐in‐the‐Loop real‐time simulations are performed under various operating case studies.

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“…Passivity-based control (PBC) is another kind of strategy used to control power converters due to its simplicity, efficiency, and ease of implementation as compared with other nonlinear control techniques [19,25]. One of the most used PBC strategies for power converters is the interconnection and damping assignment (IDA) method [26].…”

Section: Introductionmentioning

confidence: 99%

“…The most outstanding features of IDA-PBC are its stability and the simplicity in parameter determination, even for global controllers with multiple converters. The most popular applications of this approach to solve the CPL effect shows the stability and performance on DC-DC power converters allocated in a DC MG system [7,10,19,25,29,30]. On isolated MGs, IDA-PBC was applied as secondary controller in [31] and as a global controller in [32], but considering only linear and nonlinear loads.…”

Section: Introductionmentioning

confidence: 99%

Voltage Regulation of an Isolated DC Microgrid with a Constant Power Load: A Passivity-based Control Design

et al. 2021

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Passivity-based nonlinear control for an isolated microgrid system is proposed in this paper. The microgrid consists of a photovoltaic array and a battery energy storage connected to a point of common converters, supplying a constant power load. The purpose of this control strategy is to maintain the output direct current voltage in its reference value under load variations, improving battery interaction. The system is represented by its state space averaged model and the proposed controller is designed using the interconnection and damping assignment strategy, which allows obtaining controller parameters while ensuring the closed-loop system stability. The unknown constant power load is estimated using an observer based on the energy function of the system. The behavior of the proposed control strategy is validated with simulation and experimental results.

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Adaptive Passivity-Based Control of a DC–DC Boost Power Converter Supplying Constant Power and Constant Voltage Loads

Cited by 54 publications

References 41 publications

Voltage and frequency stabilization by fuzzy integrated droop control of a multi renewable source micro grid

Voltage and frequency stabilization by fuzzy integrated droop control of a multi renewable source micro grid

A novel fixed‐time dynamic surface DC/DC SEPIC converter controller loaded by uncertain buck‐based constant power loads

Voltage Regulation of an Isolated DC Microgrid with a Constant Power Load: A Passivity-based Control Design

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