Practical considerations of nonlinear control techniques applied to static power converters: A survey and comparative study

Rosa, Arthur H. R.; Morais, Lenin Martins Ferreira; Fortes, Gustavo; Júnior, Seleme Isaac Seleme

doi:10.1016/j.ijepes.2020.106545

Cited by 13 publications

(8 citation statements)

References 43 publications

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“…To achieve this, the power balance of the system can be studied. Using (6), we can calculate instantaneous powers in capacitors and inductors, and recover the rest of the power balance expression:…”

Section: B Observer Based Controlmentioning

confidence: 99%

“…In the literature, most widely studied control solutions for power converters are based on averaged linearized models. More recently, an effort has been done to propose control methods that take into account the discontinuous behavior of such systems [5], [6]. However, control oriented papers on converters usually consider simple examples such as the Boost converter.…”

Section: Introductionmentioning

confidence: 99%

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Observer-based Switched Control of the Three Level Neutral Point Clamped Rectifier

Doré,

Ariba,

Garcia

2023

2023 62nd IEEE Conference on Decision and Control (CDC)

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In this paper, an observer-based switched control law is proposed for the three level neutral point clamped (NPC) converter operating as a rectifier. Modeling the converter as a switched affine system, the proposed control is based on the well known argmin control law to track a varying state reference trajectory. A full-order observer is introduced to compute the control law with only the measure of the input and the output voltages. The control aims at tracking a state reference defined from a power analysis and three objectives are addressed: to stabilize the output at a given DC voltage, to ensure a unit power factor by having the input current and voltage on phase and to have balanced capacitor voltages on the output. Based on a unified modeling methodology, the control and the observer are easily derived from LMI conditions. An outer loop is added to regulate the output when constant perturbations are considered. The results are illustrated by simulations on MATLAB/Simulink.

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Section: B Observer Based Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Observer-based Switched Control of the Three Level Neutral Point Clamped Rectifier

Doré,

Ariba,

Garcia

2023

2023 62nd IEEE Conference on Decision and Control (CDC)

View full text Add to dashboard Cite

show abstract

“…This scheme has features such as fast transient response, improved multi-loop stability, and direct control over the current (mandatory for industrial applications) [ 6 , 12 ]. The use of nonlinear controllers to deal with control problems related to DC–DC converters has drawn considerable interest, including nonlinear control strategies such as sliding mode control (SMC) [ 20 , 21 , 22 ], fuzzy logic control (FLC) [ 23 ], differential flatness [ 24 ], backstepping [ 25 , 26 ], and passivity-based control (PBC) [ 6 , 27 , 28 ]. Among them, PBC has attracted a great deal of attention in power converters for its physical-related concepts such as damping, interconnection, and energy.…”

Section: Introductionmentioning

confidence: 99%

Passivity-Based Control for Output Voltage Regulation in a Fuel Cell/Boost Converter System

et al. 2023

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In this paper, a passivity-based control (PBC) scheme for output voltage regulation in a fuel-cell/boost converter system is designed and validated through real-time numerical results. The proposed control scheme is designed as a current-mode control (CMC) scheme with an outer loop (voltage) for voltage regulation and an inner loop (current) for current reference tracking. The inner loop’s design considers the Euler–Lagrange (E-L) formulation to implement a standard PBC and the outer loop is implemented through a standard PI controller. Furthermore, an adaptive law based on immersion and invariance (I&I) theory is designed to enhance the closed-loop system behavior through asymptotic approximation of uncertain parameters such as load and inductor parasitic resistance. The closed-loop system is tested under two scenarios using real-time simulations, where precision and robustness are shown with respect to variations in the fuel cell voltage, load, and output voltage reference.

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“…For many applications, the required level of efficiency implies the need for appropriate control laws. This context has led to revisit control problems of power converters with many efforts from the automatic control community [1].…”

Section: Introductionmentioning

confidence: 99%

General methodology for observer-based control of power electronic converters with measured perturbations

Doré,

Ariba,

Garcia

2023

2023 IEEE Conference on Control Technology and Applications (CCTA)

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This paper deals with the control and observation of DC output power electronic converters. In order to propose a general approach, a unified modeling methodology is first introduced. A switched state feedback control law using perturbed measurements and a full-order observer are then designed separately based on LMI conditions. The observer is used to compute the control law while the input and output voltages are measured, as well as perturbations. The resulting conditions ensure the exponential convergence of the reconstruction error towards zero. Then, showing the input-to-state stability (ISS) property of the system, we prove that the estimated state can be used instead to asymptotically stabilize the system. Therefore, the control scheme satisfies the separation principle property. Results are illustrated by simulations in PLECS with a noninverting Buck-Boost converter (DC-DC) and a Half-Bridge Boost PFC converter (AC-DC).

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Practical considerations of nonlinear control techniques applied to static power converters: A survey and comparative study

Cited by 13 publications

References 43 publications

Observer-based Switched Control of the Three Level Neutral Point Clamped Rectifier

Observer-based Switched Control of the Three Level Neutral Point Clamped Rectifier

Passivity-Based Control for Output Voltage Regulation in a Fuel Cell/Boost Converter System

General methodology for observer-based control of power electronic converters with measured perturbations

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