Direct power control of reduced switch active filters

Baktash, Amir; Jalilian, Alireza; Vahedi, A.

doi:10.1109/ichqp.2010.5625386

Cited by 5 publications

(11 citation statements)

References 8 publications

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“…Compared to previous controllers, the new adaptive nonlinear controller enjoys several appealing features. As mentioned above, the new controller is able to meet its control objectives despite the uncertainty that prevails on some parameters (grid impedances, load), while in most previous works all systems parameters are supposed to be perfectly known [6,8,9,11,12,15]. Moreover, the impedances are not presently assumed to be identical, unlike in the previous works. It is formally proved, using a rigorous theoretical analysis, that the control objectives (i.e., PFC and DC voltage regulation) are actually achieved.…”

Section: Introductionmentioning

confidence: 95%

“…Indeed, in most previous works (e.g., [1,7,10,13,14]), the grid internal impedances are supposed to be zero. In others (e.g., [6,8,9,11,12]), the impedances are not supposed to be zero, but they are assumed to be known and identical. Presently, the grid impedances (R g j , L g j ; j = 1, 2, 3) are neither zero, nor known and identical.…”

Section: Control Objectivesmentioning

confidence: 99%

“…• As mentioned above, the new controller is able to meet its control objectives despite the uncertainty that prevails on some parameters (grid impedances, load), while in most previous works all systems parameters are supposed to be perfectly known [6,8,9,11,12,15]. Moreover, the impedances are not presently assumed to be identical, unlike in the previous works.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the impedances are not presently assumed to be identical, unlike in the previous works. It is formally proved, using a rigorous theoretical analysis, that the control objectives (i.e., PFC and DC voltage regulation) are actually achieved. Such a formal analysis was missing in the previous works [6,9–11,13,15]. The implementation of the new controller is simpler because it does not necessitate sensors for the measurement of the grid voltages. As a matter of fact, the reduction of the number of sensors entails an increase of the controller reliability.…”

Section: Introductionmentioning

confidence: 99%

“…• It is formally proved, using a rigorous theoretical analysis, that the control objectives (i.e., PFC and DC voltage regulation) are actually achieved. Such a formal analysis was missing in the previous works [6,[9][10][11]13,15]. • The implementation of the new controller is simpler because it does not necessitate sensors for the measurement of the grid voltages.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Adaptive Nonlinear Control of Reduced‐Part three‐Phase Shunt Active Power Filters

Abouelmahjoub

Giri

Abouloifa

et al. 2017

Asian Journal of Control

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The problem of controlling reduced‐part three‐phase shunt active power filters is addressed in the presence of nonlinear loads. The control objective is twofold: (i) compensation of the current harmonics and the reactive power absorbed by the nonlinear load in order to ensure a satisfactory power factor correction (PFC) at the grid‐filter connection point; (2) regulation of the DC bus voltage at the inverter input. The considered control problem entails several difficulties including: (1) the high dimension and strong nonlinearity of the system; (ii) the numerous state variables that are inaccessible to measurements; (iii) the system parameter uncertainty. The problem is dealt with by designing a nonlinear adaptive controller with cascade structure including two control loops. The inner‐loop regulator is designed using the Lyapunov technique to ensure the PFC objective, while the outer‐loop involves a linear PI type control law for DC bus voltage regulation. The controller also includes an adaptive observer estimating the grid voltages and impedances parameters. The resulting control performances are formally analyzed using the averaging theory. Simulation results are presented illustrating the performances and the strong robustness of the proposed control strategy.

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