Review of Active Power Decoupling Topologies in Single-Phase Systems

Sun, Yang; Liu, Yonglu; Su, Mei; Xiong, Wenjing; Yang, Jian

doi:10.1109/tpel.2015.2477882

Cited by 391 publications

(166 citation statements)

References 89 publications

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“…Thus, (16) can be simplified as (19) With reference to (14) and considering a fixed resistive load Ro that is connected to the output, i.e.,…”

Section: ) System Modelingmentioning

confidence: 99%

Enhanced Automatic-Power-Decoupling Control Method for Single-Phase AC-to-DC Converters

Tan

et al. 2018

IEEE Trans. Power Electron.

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Abstract-Existing control schemes for a single-phase ac-to-dc converter with active powerdecoupling function typically involve a dedicated power-decoupling controller. However, due to the highly coupled and nonlinear nature of the single-phase system, the design of the power-decoupling controller based on the conventional linear control techniques is cumbersome, and the control structure is complicated. Additionally, with the power-decoupling control, it is generally difficult to achieve satisfied dynamic responses and robust circuit operation. Following a recently proposed automatic-power-decoupling control scheme, this paper proposes a nonlinear control method that can achieve enhanced dynamic responses and strong disturbance rejection performance without the need for a dedicated power-decoupling controller. The proposed controller has a simple structure, of which the design is straightforward. In addition, the control method is generally applicable to single-phase ac-to-dc systems with active power-decoupling function. Simulation and experimental results validate the feasibility of the proposed control method on a two-switch buck-boost PFC rectifier prototype.Index Terms-Automatic power decoupling control, single-phase ac-to-dc converters, power decoupling.

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“…Thus, (16) can be simplified as (19) With reference to (14) and considering a fixed resistive load Ro that is connected to the output, i.e.,…”

Section: ) System Modelingmentioning

confidence: 99%

Enhanced Automatic-Power-Decoupling Control Method for Single-Phase AC-to-DC Converters

Tan

et al. 2018

IEEE Trans. Power Electron.

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“…The optimization for LF-VIC controller parameters is conducted to minimize |k 1 | +|k 2 | under the inequality constraints (7), (8), (15), (17), (19), (26), (27), and equality constraint (10). Similarly, the objective function for parameter optimization of the HF-VIC controller is |k 3 | +|k 4 |, with the inequalities constraints (7), (8), (30), (31), (34), (38), (39), and equality constraint (29).…”

Section: Parameter Selectionmentioning

confidence: 99%

“…[6,7] (using stacked swithed capacitors for LED drivers), Refs. [8][9][10][11] and there are many more). We refer to [10,12] for nice surveys of this area.…”

Section: Introductionmentioning

confidence: 99%

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The Parallel Virtual Infinite Capacitor Applied to DC-Link Voltage Filtering for Wind Turbines

2018

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Abstract:We propose the parallel virtual infinite capacitor (PVIC) concept, which refers to two virtual infinite capacitors (VIC) connected to the same DC link and sharing one capacitor, one tuned to low frequencies (LF) and one tuned to high frequencies (HF). A PVIC can suppress voltage variations (ripple) in a wider frequency range than a usual VIC. The LF-VIC is controlled by a sliding mode controller to regulate the low-frequency component of the voltage to its reference value, and by a proportional-integral (PI) controller to maintain its state of charge within the desired operating range and achieve the 'plug-and-play' pattern of PVIC. The HF-VIC is controlled by another sliding mode controller to limit the high-frequency ripples and also to keep its state of charge within a reasonable operating interval. As our main application, we use the PVIC to replace a DC-link capacitor for voltage filtering on the DC link of a doubly fed induction generator (DFIG), which is driven by a WindPact (WP) 1.5-MW wind turbine under different grid conditions with turbulent wind input. The simulation study indicates that the PVIC provides much better voltage stabilisation than a DC-link capacitor with the same capacitance, especially in the low frequency range.

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“…In the conventional three-phase inverter without any extra circuits, there will be no way to reduce its dc-link capacitance as small as one three-phase system, that is, to eliminate the 2ω ripple power described by [11]. Active ripple decoupling techniques, called active filter in this paper, have been explored to deal with the 2ω power in the traditional three-phase converters, by paralleling additional active energy storage devices to the dc link described by [12]. In similar way, the active filter method can help the three-phase QZSI to minimize the QZS capacitance and inductance with small ac capacitor storing 2ω power.…”

Section: Review Of the Related Workmentioning

confidence: 99%

Quasi Impedance Source Inverter Based Active Filter for Flexible Grid Connection

Madasamy¹

2017

IJRASET

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The main objective of this paper is to suppress harmonic and unbalanced reactive power to ensure the reliable operation of grid at the same time of grid-connection. Active filter (AF) has become the conventional technique of harmonic suppression, and the control method applied in the photovoltaic grid-connected system. The paper proposes an active filter integrated quasi Z source inverter applied in photovoltaic systems better, a flexible grid connection method based on direct power control. The main function of the proposed grid-connected photovoltaic generation system is supplying active power to grid, while that of AF device is harmonic suppression and reactive power compensation. The proposed method adopted grid power to control active filter directly, thus the detection of harmonics and reactive current of loads is omitted. The effectiveness of the proposed method proved through .simulation with MATLAB. Keywords: Active filter, Flexible grid-connection, quasi Z source inverter, second order pulsating harmonics I. INTRODUCTIONRenewable resources are the alternative resources for conventional energy resources and are in great demand nowadays. The traditional resources are reducing across the world rapidly. Solar photo voltaic generating electrical power from the alternative resources. Many research efforts are made to extract maximum power out of the Photo voltaic panel by using different power converters as most of the power generated by the renewable sources are varying. There are different traditional power circuit topological which has many disadvantages. The conventional Voltage Source Inverters and DC/DC converters have certain disadvantages such as double stage conversion, maximum output voltage obtained is less than the dc voltage, complexity in the controller circuits and the inverter components should be over sized to match with the continuous variation of Photo voltaic voltages which can be overcome by the proposed control topology of quasi impedance source inverter. The pv system is connected by implementation of the quasi impedance source inverter in which the output voltage can be controlled by both modulation index and the boost factor independently based on the open loop and closed loop simulation. This advantage makes Photo voltaic generation more efficient. Since the quasi impedance source inverter has the advantage of having no dead time. To operate in one of the mode named shoot through mode either the same leg switches(upper leg and lower leg) are short switches ON so that short circuit occurs whereas in order to avoid the short circuit of the same leg as designed in the form of traditional VSI methods we are forced to make the dead time . The comparative analysis between impedance source and the quasi impedance source inverter were done to find out the best topology for the Photo Voltaic system. A traditional energy storage system usually requires an extra bidirectional dc-dc converter , which increases the system cost, volume, and control complication. Hence, an energy storage...

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Review of Active Power Decoupling Topologies in Single-Phase Systems

Cited by 391 publications

References 89 publications

Enhanced Automatic-Power-Decoupling Control Method for Single-Phase AC-to-DC Converters

Enhanced Automatic-Power-Decoupling Control Method for Single-Phase AC-to-DC Converters

The Parallel Virtual Infinite Capacitor Applied to DC-Link Voltage Filtering for Wind Turbines

Quasi Impedance Source Inverter Based Active Filter for Flexible Grid Connection

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