Switched control of a three-phase AC–DC power converter

Egidio, Lucas N.; Deaecto, Grace S.; Barros, Tárcio André dos Santos

doi:10.1016/j.ifacol.2020.12.1791

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…This model accurately captures the operational dynamics of three-phase VSCs. In contrast to the conventional 3D current switching models in [24][25][26][27], the power switching model (2) adopts a 2D representation. This characteristic offers significant advantages in terms of system stability analysis and design of switching rules, which will be further discussed.…”

Section: Power Switching Affine Modelmentioning

confidence: 99%

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A Robust Switching Control Strategy for Three-Phase Voltage Source Converters with Uncertain Circuit Parameters

Guo,

Qiao,

et al. 2024

Energies

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This study proposes a novel double closed-loop robust control strategy based on a power switching affine model of three-phase voltage source converters (VSCs). The aim is to overcome the challenges posed by inaccurate mathematical models, complex controller configurations, indirect switching control, and performance degradation under circuit parameters uncertainty or load variation in conventional methods. These conventional methods rely on linearization models, duty ratio regulation, and pulse width modulation (PWM) technologies. The contributions of work are the following: (1) A two-dimensional (2D) power switching affine model is constructed without any approximation or averaging. (2) The proposed approach achieves direct switching control of three-phase VSCs, eliminating the need for complex rotation coordinate transformation, PWM, and phase locking loop (PLL), which are utilized in traditional control methods. (3) The rigor of the system stability analysis is enhanced based on the 2D power switching model compared to the existing three-dimensional (3D) current switching model. (4) A simple control structure with only two control parameters is employed to address circuit parameter uncertainties. The effectiveness and superiority of the proposed method is validated through simulation and experimental comparison results.

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Section: Power Switching Affine Modelmentioning

confidence: 99%

“…., N) on each constant time interval. According to [24][25][26][27][28][29], the state-dependent switching rule, where the subsystem has minimum . V( x) is selected for the next cycle, is defined by…”

Section: Inner Loop Switching Controllermentioning

confidence: 99%