Investigation of Parallel Active Filters’ Limitations for Power Decoupling on Single-Stage/Single-Phase Microinverters

Christidis, Georgios C.; Kyritsis, Anastasios; Papanikolaou, Nick; Tatakis, Emmanuel C.

doi:10.1109/jestpe.2016.2552980

Cited by 22 publications

(14 citation statements)

References 42 publications

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“…In [65], a current pulsation smoothing-parallel active filter (CPS-PAF) is proposed. The CPS-PAF consists of a small film capacitor and a conventional non-isolated buck/boost [66] (c) Current control loop of ALFRCD with virtual cascaded capacitor [66] (d) Bidirectional-buck type APT [67], [68] (e) FB-RCR circuit [68], [69] (f) Ripple-port circuit [19] (g) Dual-voltage control decoupling strategy using a symmetric half-bridge circuit with H-bridge [70], [71] (h) Dependent power decoupling with two-phase legs [1], [72], [73] and (i) [73], [74] (j) Series power decoupling technique with two legs [75] and three legs [76] circuit (see Fig. 6(a)).…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

“…Working principle of (a) CPS-PAF [65], [69] (b) Ripple port control [19] uously compares the input current (I in ) with instantaneous value of the DC-link current (i o (ωt)). For I in > i o (ωt) in interval 0 − π/4 and 3π/4 − π, the capacitor C F C stores energy (boost-mode) and for I in < i o (ωt) in interval π/4 − 3π/4 releases the energy (buck-mode).…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

“…However, the active power imbalance between input and output of PAF and the power loss of PAF cause a decrease in the voltage of C F C resulting in a lower value of V c than the DC-link voltage. In such case the PAF gets short-circuit the input and output and ripple elimination is affected [69]. To resolve this problem, a mixed type APT version of CPS-PAF is proposed in [65] (see Fig.…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

“…A four-switch based bidirectional full-bridge-ripple current reduction (FB-RCR) circuit is shown in the Fig. 6(e) [69], [75]. The working principle of the FB-RCR is same as of CPS-PAF of [65].…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

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Control Strategies and Power Decoupling Topologies to Mitigate 2ω-Ripple in Single-Phase Inverters: A Review and Open Challenges

et al. 2020

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This paper provides a comprehensive review of the control approaches and the powerdecoupling topologies to mitigate 2ω-ripple problem in the single-phase inverters, its solutions, and discusses open challenges yet to be addressed. The cause and effects of 2ω-ripple problem and its solution based on the passive and active power-decoupling techniques are discussed. A subcategory of the active power-decoupling technique nominated as the control-oriented compensation technique is reviewed in detail, this technique can achieve the ripple-mitigation at the source through the control but not necessarily adds extra circuit or active filter to the system. The control-oriented compensation techniques can be applied in the two-stage DC-DC-AC converters and the single-stage inverters having a front-end control capability with the H-bridge such as in the quasi-switched-boost inverters. The merits and associated challenges of these techniques are listed and summarized in a tabular form. Finally, a conclusive discussion with open challenges is presented. INDEX TERMS 2ω−ripple, Single-phase Inverter, Control strategies, Power-decoupling schemes.

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Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

Control Strategies and Power Decoupling Topologies to Mitigate 2ω-Ripple in Single-Phase Inverters: A Review and Open Challenges

et al. 2020

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“…Another active decoupling method is to install an active filter in parallel with the DC-bus and make the ripple power solely supplied by this additional bidirectional DC/DC converter [27,[52][53][54][55][56][57][58]. Fig.2.6 shows the topology of the bidirectional converter with an active filter.…”

Section: Single-phase Ac/dc Converter With An Active Filtermentioning

confidence: 99%

A Digital Control System for UPS Systems With Smart-Grid Capability

Mardani

Falconar

Shafiei

et al. 2020

IEEE J. Emerg. Sel. Topics Power Electron.

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An active parallel power decoupling circuit with a dual loop control scheme for micro‐inverters

Rezaei

Akhbari

2021

Circuit Theory & Apps

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An important challenge in single‐stage single‐phase micro‐inverters is reducing required capacitance by various active power decoupling (APD) techniques in order to use film capacitors with a longer lifetime instead of electrolytic capacitors. In this paper, a photovoltaic (PV)‐side parallel APD circuit based on a bidirectional flyback converter is proposed. This topology is able to increase the average and ripple voltages for the capacitor due to having a transformer and thus can reduce the required capacitance. In the control scheme, dual control loops on the main and decoupling circuits manage the micro‐inverter operation. The primary control loop is based on the instantaneous active and reactive power theory and a proportional resonant (PR) controller that is responsible for delivering the PV panel energy to the grid. The secondary control loop regulates the pulsation power on the dc‐link capacitor through the PR controller. Simulation results demonstrated that the proposed APD circuit and the control method could properly damp the pulsation power in the normal and reference tracking operations. Furthermore, the good robustness of the micro‐inverter was confirmed in shutdown and start‐up. Finally, the experimental results with a 180‐W single‐phase micro‐inverter prototype are presented, which validates the advantages of the proposed configuration.

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Investigation of Parallel Active Filters’ Limitations for Power Decoupling on Single-Stage/Single-Phase Microinverters

Cited by 22 publications

References 42 publications

Control Strategies and Power Decoupling Topologies to Mitigate 2ω-Ripple in Single-Phase Inverters: A Review and Open Challenges

Control Strategies and Power Decoupling Topologies to Mitigate 2ω-Ripple in Single-Phase Inverters: A Review and Open Challenges

A Digital Control System for UPS Systems With Smart-Grid Capability

An active parallel power decoupling circuit with a dual loop control scheme for micro‐inverters

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