A Model-Based Direct Power Control for Three-Phase Power Converters

Vázquez, Sergio; Sánchez, Juan Antonio Pastor; Carrasco, J.M.; Leon, Jose I.; Galván, E.

doi:10.1109/tie.2008.917113

Cited by 181 publications

(99 citation statements)

References 31 publications

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“…Focusing on the instantaneous powers, the control method proposed in [46] is adopted here, which is based on the output regulation subspaces and implements a proportional-type direct power control. Thereby, the control vectors δ αβ,r and δ αβ,i are applied, respectively, to control the instantaneous powers of the rectifier and of the inverter.…”

Section: Simulation Resultsmentioning

confidence: 99%

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Umbría

Gordillo

Salas

et al. 2013

Int. J. Robust. Nonlinear Control

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SUMMARYThis paper addresses the imbalance problem of the dc-link capacitor voltages in the three-level diodeclamped back-to-back power converter. In order to cope with it, a mathematical analysis of the capacitor voltage difference dynamics, based on a continuous model of the converter, is first carried out. It leads to an approximated model which contains explicitly several sinusoidal functions of time. In view of this result, the voltage imbalance phenomenon can be addressed as an output regulation problem, considering the sinusoidal functions as exogenous disturbances. Thus, a novel approach to deal with the mentioned problem in the backto-back converter is presented. Then, the particular features of the disturbances are used to design several controllers. They all follow an asymptotic disturbance rejection approach. In this way, the estimations of the disturbances are used to apply a control law that cancels them while regulating the capacitor voltage balance as well. Finally, the performance of the proposed control laws is evaluated, presenting the simulation results obtained when the different controllers are implemented.

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Section: Simulation Resultsmentioning

confidence: 99%

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Umbría

Gordillo

Salas

et al. 2013

Int. J. Robust. Nonlinear Control

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show abstract

“…The load connected to the dc link represents any generic load connected to an AFE. Thus, it can be a resistor for a rectifier, a PV panel, or a converter to control the torque and/or speed of a Optimize Measure [18], [19].…”

Section: Control Of An Active Front Endmentioning

confidence: 99%

Model Predictive Control: A Review of Its Applications in Power Electronics

Vázquez

Leon

Franquelo

et al. 2014

EEE Ind. Electron. Mag.

967

374

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“…Proportional-resonant (PR) [18,19] controllers are also extensively used for GCIs, which feed forward a resonant controller tuned at double the grid frequency. Direct power control methods [20,21] control the required power without additional inner current loops. The method given in [22] gives an enhanced operation of decoupled DSRF (DDSRF) operation by using feed-forwarded resonant controllers.…”

Section: Introductionmentioning

confidence: 99%

Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

et al. 2017

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This paper proposes a new approach on the novel current control strategy for grid-tied voltage-source inverters (VSIs) with circumstances of asymmetrical voltage conditions. A standard grid-connected inverter (GCI) allows the degree of freedom to integrate the renewable energy system to enhance the penetration of total utility power. However, restrictive grid codes require that renewable sources connected to the grid must support stability of the grid under grid faults. Conventional synchronously rotating frame dq current controllers are insufficient under grid faults due to the low bandwidth of proportional-integral (PI) controllers. Hence, this work proposes a proportional current controller with a first-order low-pass filter disturbance observer (DOb). The proposed controller establishes independent control on positive, as well as negative, sequence current components under asymmetrical grid voltage conditions. The approach is independent of parametric component values, as it estimates nonlinear feed-forward terms with the low-pass filter DOb. A numerical simulation model of the overall power system was implemented in a MATLAB/Simulink (2014B, MathWorks, Natick, MA, USA). Further, particular results show that double-frequency active power oscillations are suppressed by injecting appropriate negative-sequence currents. Moreover, a set of simulation results provided in the article matches the developed theoretical background for its feasibility.

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A Model-Based Direct Power Control for Three-Phase Power Converters

Cited by 181 publications

References 31 publications

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Model Predictive Control: A Review of Its Applications in Power Electronics

Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

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