Journal ArticleDOI
Single-phase current source converter with power decoupling capability using a series-connected active buffer
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TLDR
In this paper, the authors proposed a power decoupling circuit applied to the single-phase current source converter (SCSC), which could be viewed as a controlled voltage source in series with the DC inductor and work with SCSC independently.Abstract:
This study proposes a new power decoupling circuit applied to the single-phase current source converter (SCSC). Differing from the existing power decoupling technologies, the proposed power decoupling circuit could be viewed as a controlled voltage source in series with the DC inductor, and work with SCSC independently. That facilitates the separate design of the modulation schemes and the control algorithms for the power decoupling circuit and SCSC, and reduces the operation restrictions imposed by requirements. The fundamental principle of the proposed converter is analysed, and the voltage reference requirement for the buffer capacitor is investigated. To guarantee high input current quality of SCSC, a control method, where the input current is treated as a virtual control input, is proposed. Finally the effectiveness of this topology is verified by the simulations and experimental results.read more
Citations
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Journal ArticleDOI
Review of Active Power Decoupling Topologies in Single-Phase Systems
TL;DR: In this paper, the authors provide a comprehensive review of active power decoupling circuit topologies and their development laws from the view of the dual principle, switch sharing, and differential connection.
Journal ArticleDOI
Low-Frequency Power Decoupling in Single-Phase Applications: A Comprehensive Overview
TL;DR: In this paper, the authors present a literature overview of power decoupling in single-phase applications and present the best reference on this topic, which can be implemented as series or parallel with respect to the ac, dc or link side.
Journal ArticleDOI
Capacitance, dc Voltage Utilizaton, and Current Stress: Comparison of Double-Line Frequency Ripple Power Decoupling for Single-Phase Systems
TL;DR: In this paper, the minimum capacitance to decouple the ripple power and the current stress of power devices in the main circuit are derived in light of different voltages across energy storage capacitors.
Journal ArticleDOI
A SiC-Based High Power Density Single-Phase Inverter With In-Series and In-Parallel Power Decoupling Method
TL;DR: In this paper, an in-series and in-parallel combination power decoupling method for the single-phase inverter is presented, which can achieve a more than 89% reduction of the dc-link capacitance compared with the traditional inverter.
Journal ArticleDOI
Multifunctional DC Electric Springs for Improving Voltage Quality of DC Grids
TL;DR: The results show a good agreement with the theoretical analysis, confirming that the DCES can be an effective solution to provide simultaneous functions of dc microgrid bus voltage regulation.
References
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A review of single-phase grid-connected inverters for photovoltaic modules
TL;DR: In this article, the authors focus on inverter technologies for connecting photovoltaic (PV) modules to a single-phase grid and categorize the inverters into four classifications: 1) the number of power processing stages in cascade; 2) the type of power decoupling between the PV module(s) and the single phase grid; 3) whether they utilizes a transformer (either line or high frequency) or not; and 4) the kind of grid-connected power stage.
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Averaging Methods in Nonlinear Dynamical Systems
TL;DR: The history of the theory of averaging can be found in this paper, where a 4-dimensional example of Hopf Bifurcation is presented. But the history of averaging is not complete.
Journal Article
Averaging methods in nonlinear dynamical systems
Journal ArticleDOI
Minimum Energy and Capacitance Requirements for Single-Phase Inverters and Rectifiers Using a Ripple Port
TL;DR: In this article, a ripple power port is proposed to manage energy storage and decouple capacitor ripple from power ripple, allowing the designer to make a choice of capacitor voltage independent of other system voltages.
Journal ArticleDOI
A Review of Power Decoupling Techniques for Microinverters With Three Different Decoupling Capacitor Locations in PV Systems
TL;DR: In this paper, a thorough study for different power decoupling techniques in single-phase microinverters for grid-tie PV applications is presented, compared and scrutinized in scope of the size of decoupled capacitor, efficiency, and control complexity.