Journal ArticleDOI
Review of Active Power Decoupling Topologies in Single-Phase Systems
TLDR
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.Abstract:
Active power decoupling methods are developed to deal with the inherent ripple power at twice the grid frequency in single-phase systems generally by adding active switches and energy storage units. They have obtained a wide range of applications, such as photovoltaic (PV) systems, light-emitting diodes (LEDs) drivers, fuel cell (FC) power systems, and electric vehicle (EV) battery chargers, etc. This paper provides a comprehensive review of active power decoupling circuit topologies. They are categorized into two groups in terms of the structure characteristics: independent and dependent decoupling circuit topologies. The former operates independently with the original converter, and the latter, however, shares the power semiconductor devices with the original converter partially and even completely. The development laws for the active power decoupling topologies are revealed from the view of “duality principle,” “switches sharing,” and “differential connection.” In addition, the exceptions and special cases are also briefly introduced. This paper is targeted to help researchers, engineers, and designers to construct some new decoupling circuit topologies and properly select existing ones according to the specific application.read more
Citations
More filters
Journal ArticleDOI
A High Power Density Series-Stacked Energy Buffer for Power Pulsation Decoupling in Single-Phase Converters
TL;DR: In this paper, a high-efficiency, high-power-density buffer architecture is proposed for power pulsation decoupling in power conversion between dc and single-phase ac. In the proposed architecture, the main energy storage capacitor is connected in series with an active buffer converter across the dc bus.
Journal ArticleDOI
Control Schemes for Reducing Second Harmonic Current in Two-Stage Single-Phase Converter: An Overview From DC-Bus Port-Impedance Characteristics
Li Zhang,Xinbo Ruan +1 more
TL;DR: Critical points for SHC reduction are summarized, indicating that, for reducing SHC in BVCC, proper control scheme needs be incorporated for increasing the dc-bus port-impedance at twice the input frequency and simultaneously, the loop gain should be high enough for eliminating theSHC in the dc source or load.
Journal ArticleDOI
Current Ripple Damping Control to Minimize Impedance Network for Single-Phase Quasi-Z Source Inverter System
Baoming Ge,Yushan Liu,Haitham Abu-Rub,Robert S. Balog,Fang Zheng Peng,Stephen McConnell,Xiao Li +6 more
TL;DR: This paper proposes a technique that minimizes the qZS capacitance and inductance of the single-phase qZSI topology by employing dc-side low-frequency current ripple damping control.
Journal ArticleDOI
An Active Filter Method to Eliminate DC-Side Low-Frequency Power for a Single-Phase Quasi-Z-Source Inverter
TL;DR: This paper proposes an active filter integrated single-phase qZSI topology to transfer the low-frequency (second harmonic) power ripple directly from the ac load to the active filter ac capacitor, and comparative evaluation and experimental results verify the proposed new topology system.
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.
References
More filters
Journal ArticleDOI
A review of single-phase improved power quality AC-DC converters
TL;DR: This paper presents an exhaustive review of three-phase improved power quality AC-DC converters configurations, control strategies, selection of components, comparative factors, recent trends, their suitability, and selection for specific applications.
Journal ArticleDOI
Reliability of Capacitors for DC-Link Applications in Power Electronic Converters—An Overview
Huai Wang,Frede Blaabjerg +1 more
TL;DR: This review serves to provide a clear picture of the state-of-the-art research in this area and to identify the corresponding challenges and future research directions for capacitors and their dc-link applications.
Journal ArticleDOI
Toward Reliable Power Electronics: Challenges, Design Tools, and Opportunities
TL;DR: The performance of power electronic systems, especially in terms of efficiency and power density, has continuously improved by the intensive research and advancements in circuit topologies, control schemes, semiconductors, passive components, digital signal processors, and system integration technologies.
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.