PCC Voltage Compensation of PV Inverter with Active Power Decoupling Circuit

Hwang, Duck-Hwan; Lee, Jung‐Yong; Cho, Younghoon

doi:10.23919/ipec.2018.8507852

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…A common two stage inverter used an extra ripple circuit module, which allows using film capacitors with less energy storage capacity compared to electrolytic capacitors [16]. Other means were reported in the literature to decrease the DC link capacitor or inductor sizes [17][18][19][20][21][22][23][24][25][26][27]. These topologies include extra circuitry, such as switching and passive components in the main current path.…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis of DC Link Energy Storage for Single-Phase Grid-Connected PV Inverters

et al. 2019

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Single-phase grid-connected photovoltaic (PV) inverters (GCI) are commonly used to feed power back to the utility. However, the inverter output power fluctuates at 100 Hz, which can be seen by the PV panel, and this reduces the PV output power. It is important to determine and analyze the correlation between the array voltage and current ripple and the average output power reduction of PV array. Therefore, this paper investigates the relationships between the oscillations due to single-phase switching and the DC link energy storage for PV GCIs. The balanced ripple definition is introduced and compared with the more common centered ripple definition. Some examples are provided that demonstrate the importance of these results, in the inverter design industry. The analysis presented here incorporates inductor trade-offs, which are verified with experimental results.

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Section: Literature Reviewmentioning

confidence: 99%

Analysis of DC Link Energy Storage for Single-Phase Grid-Connected PV Inverters

et al. 2019

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Active Power-Decoupling Methods for Photovoltaic-Connected Applications: An Overview

Rodríguez-Benítez,

Ponce-Silva,

Aqui-Tapia

et al. 2023

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This study compares ripple port, stacked switched capacitor, and capacitive energy storage architectures for active power decoupling, comparing the number of components, performance, energy density, DC-link capacitor reduction, efficiency, and frequency operation to highlight their main benefits and drawbacks for single-phase grid-connected applications. The overview reveals equivalent effective energy density without electrolytic capacitors, as well as enhanced simplicity, performance, and durability, thereby providing stacked switched capacitors as an attractive power-decoupling alternative for multi-stage connected applications, based on the principle that its individual buffer capacitors absorb and deliver energy without tightly constraining their individual terminal voltages, while maintaining a narrow range voltage at the buffer DC port.

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PCC Voltage Compensation of PV Inverter with Active Power Decoupling Circuit

Cited by 2 publications

References 15 publications

Analysis of DC Link Energy Storage for Single-Phase Grid-Connected PV Inverters

Analysis of DC Link Energy Storage for Single-Phase Grid-Connected PV Inverters

Active Power-Decoupling Methods for Photovoltaic-Connected Applications: An Overview

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