Harmonic Compensation Using a Series Hybrid Filter in a Centralized AC Microgrid

Antunes, Hélio M. A.; Silva, Sidelmo M.; Brandão, Danilo I.; Machado, Alysson Augusto Pereira; Filho, Braz J. Cardoso

doi:10.1007/s40313-017-0365-4

Cited by 5 publications

(3 citation statements)

References 34 publications

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“…Hence, controller C 2 (s) ensures that TFOL 2 (s) presents a narrow bandwidth. Substituting K i = 1.25×10 3 , φ ωcg = 3.87 • , and ω cg = 6.2832 rad/s After substituting (82) and (84) in (83), the Bode diagram of TFOL 2 (s) can be plotted in Fig. 13, where the phase margin is 62.4 • and the crossover frequency is 0.514 rad/s.…”

Section: B Dc-link Voltage Loopmentioning

confidence: 99%

“…The production of electricity from renewable energy sources, e.g., solar, and wind, has received increasing attention in the context of distributed generation [1], [2]. Such energy conversion systems can be connected to the ac grid through dc-ac power converters using an ac bus [3]- [5]. However, interconnection through a dc bus is also possible [6].…”

Section: Introductionmentioning

confidence: 99%

“…When interconnection is not required, i.e., operation occurs in standalone mode, such systems often present low short-circuit capacity, being susceptible to harmonic voltage distortions [3], mainly while supplying nonlinear loads [7]. Undesirable effects are then supposed to occur in equipment designed to operate under sinusoidal voltages,…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Experimental Validation of a Single-Phase Series Active Power Filter for Harmonic Voltage Reduction

et al. 2019

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Research advances on renewable energy systems have increased the interest in the use of isolated power supplies composed of power converters based on high-frequency transformers. Such power equipment generally presents high internal impedance, which amplifies the effects of harmonic voltages produced by nonlinear loads that draw currents with high harmonic content. Some sensitive loads, e.g., electric motors and distribution transformers, may not properly operate when supplied by extremely distorted voltages. Series active power filters (SAPFs) are suitable to mitigate this inconvenient, being capable of providing harmonic voltage compensation and minimizing the distortion of supply voltages. In this context, this work addresses the small-signal modeling, control system implementation, and experimental validation of a single-phase SAPF. The proposed approach is solely employed for harmonic voltage compensation purposes, thus allowing loads to be supplied by a nearly sinusoidal voltage. During the modeling process, the operating steps are analyzed in detail, while the presence of parasitic elements is taken into account. An equivalent circuit is also derived, which is used to provide an easy understanding of the interactions among the SAPF, load, and power supply. From this model, transfer functions can be obtained so that it is possible to design the control loops used by the SAPF. Experimental results with distinct types of loads are presented to evaluate the SAPF performance in both steady-state and transient conditions. INDEX TERMS Harmonic voltage filtering, voltage quality, series active power filter, small-signal modeling, voltage-source inverter.

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Section: B Dc-link Voltage Loopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling and Experimental Validation of a Single-Phase Series Active Power Filter for Harmonic Voltage Reduction

et al. 2019

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Adaptive and Exact Linearization Control of Multicellular Power Converter Based on Shunt Active Power Filter

Rouabah

Rahmani

Toubakh

et al. 2019

J Control Autom Electr Syst

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Adaptive Nonlinear Control of Three-Phase Series Active Power Filters with Magnetic Saturation

Ouadi

Aitchihab

Giri

2020

J Control Autom Electr Syst

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The problem of controlling three-phase series active power filters (series APF) is addressed in the presence of nonlinear loads. In previous works, the control design for series APF is generally based on standard models that assume the involved magnetic coil to be linear. In reality, the magnetic characteristics of these components are nonlinear. In this paper, a new model for series APF load system, taking into account for the nonlinearity of coil characteristics, is developed. Based on the new model, a nonlinear adaptive controller is developed, using the backstepping design. The control objectives is twofold: (i) compensating for the harmonic and disturbed voltages components at the point of common coupling, this objective is referred to network voltage quality; and (ii) regulating the inverter DC capacitor voltage. Moreover, the controller is made adaptive for compensating the uncertainty on the switching loss power. The performances of the proposed adaptive controller are formally analyzed using tools from the Lyapunov stability and average theory. The supremacy of the proposed controller with respect to standard control solution is illustrated through simulation. Keywords Adaptive control • Active power filters • Magnetic saturation • Voltage quality • Lyapunov stability • Average model 1 Introduction Several industrial and residential applications (such as switching power supplies, motor drivers and medical equipment, among others) are very sensitive to voltage network fluctuations. Indeed, the presence of these disturbances leads to problems of synchronization with line voltage, responsible for systems malfunctions. Moreover, the nonlinear load contributes strongly to generating disturbing voltage components. In fact, the circulation of current harmonics components through the line conductors generates additional voltage distortions at the point of common coupling (PCC). These voltage distortions are manifested by flickers, dips, interruptions and voltage harmonics, which are harmful for B A.

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Harmonic Compensation Using a Series Hybrid Filter in a Centralized AC Microgrid

Cited by 5 publications

References 34 publications

Modeling and Experimental Validation of a Single-Phase Series Active Power Filter for Harmonic Voltage Reduction

Modeling and Experimental Validation of a Single-Phase Series Active Power Filter for Harmonic Voltage Reduction

Adaptive and Exact Linearization Control of Multicellular Power Converter Based on Shunt Active Power Filter

Adaptive Nonlinear Control of Three-Phase Series Active Power Filters with Magnetic Saturation

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