Design and Analysis of the Low Device Stress Active Power Decoupling for Single-Phase Grid Connection for a Wide Range of Power Factor

Bhowmick, Sujata; Umanand, L.

doi:10.1109/jestpe.2018.2794784

Cited by 22 publications

(13 citation statements)

References 22 publications

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“…9(b-g) add extra switches to the system. The inclusion of third leg with the H-Bridge reduces the stress on the switches by 57% in comparison to H-Bridge [93], [96]. Zhu et al in [91] proposed a ripple confinement control technique for the circuit shown in Fig.…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

“…An APT for grid connected AC-DC power converter as shown in the Fig. 9(d) is proposed in [93]. This APT significantly reduces the size of DC-link capacitor.…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

“…Mixed type of APTs without adding extra power electronics (a) proposed in [1] and adding extra pair of switches (b) proposed in [91] (c) proposed in [92] (d) proposed in [93] (e) proposed in [94] (f) Modified version of CPS-PAF scheme based circuit in Fig. 6(a) [65] (g) Hybrid filter [57] (h) proposed in [95] due to internal loss of filter.…”

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%

“…An APT for grid connected AC-DC power converter as shown in the Fig. 9(d) is proposed in [93]. This APT significantly reduces the size of DC-link capacitor.…”

Section: B Active Power-decoupling Techniquesmentioning

confidence: 99%

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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“…For suppressing the low-frequency harmonic, an extra power stage is necessary to be connected to the DC bus of AC-DC power converter in parallel [15][16][17][18] or in series [19]. A DC-DC power converter can be inserted between the AC-DC power converter and DC grid to block the low-frequency harmonic to the DC grid for the series type compensator [19].…”

Section: Harmonic Injection Of Power Conversion Interfacementioning

confidence: 99%

“…A power conversion interface converts real power in both directions between a DC grid and a single-phase utility. The instantaneous power from the single-phase utility comprises a DC component and a significant low-frequency component [15][16][17][18][19]. The frequency of the low-frequency component is twice the utility frequency.…”

Section: Introductionmentioning

confidence: 99%

Power conversion interface with harmonic suppression for a DC grid and single‐phase utility

Wu¹,

Jou²,

Wu³

2020

IET Power Electronics

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This study proposes a power conversion interface for a DC grid and a single-phase utility. The proposed power conversion interface is configured using an interleaved AC-DC power converter and a DC hybrid power filter. The interleaved AC-DC power converter controls the real power between the DC grid and the single-phase utility in both directions. The interleaved AC-DC power converter can effectively reduce the high-frequency harmonic currents at both the AC side and DC side. A new current-sharing control method is used to equalise the currents in the interleaved power-electronic arms using only one current sensor in the interleaved AC-DC power converter. The DC hybrid power filter is connected between the DC bus of the interleaved AC-DC power converter and the DC grid. The DC hybrid power filter is controlled to be operated as a virtual low-frequency AC resistor connected to the DC grid in series and the low-frequency harmonic for the DC input current of the interleaved AC-DC power converter is suppressed. Accordingly, the problems of harmonic currents for a power conversion interface used between the DC grid and the single-phase utility are attenuated. A hardware prototype is developed to verify the performance of the proposed power conversion interface.

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AC/DC Side Split Capacitor Power Decoupling Circuit

Liu

Fan

Zhang

et al. 2023

J. Electr. Eng. Technol.

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Single-phase inverters have a wide range of applications in many fields, but there are inherent double frequency problems, and double frequency fluctuations can easily cause system instability. This paper proposes a mid-point common-mode injection power decoupling circuit. The advantage of this topology is that there are no additional switching devices and only the original DC side support capacitors and filter capacitors of the H-bridge inverter can be used to buffer the double frequency power. The half-bridge structure of this topology enables the AC side capacitors to operate positively and negatively, which can reduce the selection of the withstand voltage of the decoupling capacitor. Simulation and experimental results prove that the method can effectively suppress the secondary ripple on the DC side. The final data shows that the topology can effectively improve the system efficiency after decoupling.

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Design and Analysis of the Low Device Stress Active Power Decoupling for Single-Phase Grid Connection for a Wide Range of Power Factor

Cited by 22 publications

References 22 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

Power conversion interface with harmonic suppression for a DC grid and single‐phase utility

AC/DC Side Split Capacitor Power Decoupling Circuit

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