Results 271 to 280 of about 22,065 (311)

Droop PLL for grid-connected inverter

Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012
Using grid voltage feed-forward control, the current-loop parameters and filter inductor affect the power factor of grid-connected inverter. Based on droop phase-locked loop (PLL) a novel control strategy is proposed. The phase difference between the grid current and grid voltage is detected and is used to calculate the output frequency of PLL.
null Jia-rong Kan, null Ning Li, null Zhi-lei Yao, null Ying-cheng Xue, null Dong-chun Wu   +4 more
openaire   +1 more source

Design of a Seamless Grid-Connected Inverter for Microgrid Applications

IEEE Transactions on Smart Grid, 2020
The objective of this paper is to propose a seamless grid-connected inverter (SGI) for microgrid applications. The proposed SGI is able to operate in the grid-connected mode or the standalone mode. In order to smooth the transfer transition from the grid-connected mode to the standalone mode and to isolate the microgrid from the grid fault immediately ...
Kuo-Yuan Lo, Yaow-Ming Chen
openaire   +1 more source

A single-phase grid-connected PV inverter with improved grid-connected current

The 27th Chinese Control and Decision Conference (2015 CCDC), 2015
This paper presents an effective method, which can address the existing dc-link double-line-frequency voltage ripples in single-phase grid-connected PV inverters, to improve the grid-connected current. The instantaneous power pulsations at grid side cause double-line-frequency fluctuations of the dc-link voltage in single-phase grid-connected PV ...
Furong Xiao, Lei Dong, Xiaozhong Liao
openaire   +1 more source

The Application of SiC Devices in Photovoltaic Grid-connected Inverters

Proceedings of the 2nd International Conference on Artificial Intelligence and Advanced Manufacture, 2020
The continuous development of photovoltaic grid-connected technology extended the requirement on higher power density and higher efficiency for power converters. In this respect, the application of silicon carbide (SiC) high-power power electronic devices in photovoltaic inverter systems can simplify the system design, simplify the heat dissipation ...
Yongping Li, Ling Li, Hao Wu, Chunyan Jiang, Chaozhang Liu, Shumin Yan, Xinhua Chen, Guodong Feng, Huanyun Zhang   +8 more
openaire   +1 more source

A Fundamental Study on LCLCL Filters for Grid-connected inverters

2019 IEEE Conference on Control Technology and Applications (CCTA), 2019
This paper studies fifth-order filters to realize reduction of filter size for grid-connected inverters. Those filters are expected to achieve better performance with smaller filter size, since they have steeper characteristics than conventional and lower-order ones. The parameters design criteria of those filters are also introduced.
Yuta Nakao, Kenta Koiwa, Kenji Natori, Kang-Zhi Liu 0001, Yukihiko Sato   +4 more
openaire   +1 more source

Two-stage grid-connected inverter for PV systems

2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG 2018), 2018
In this study, a two-stage grid-connected inverter is proposed for photovoltaic (PV) systems. The proposed system consist of a single-ended primary-inductor converter (SEPIC) converter which tracks the maximum power point of the PV system and a three-phase voltage source inverter (VSI) with LCL filter to export the PV supplied energy to the grid.
Altin, Necmi, Ozdemir, Saban, Komurcugil, Hasan, Sefa, Ibrahim, Biricik, Samet   +4 more
openaire   +2 more sources

Robust Power Flow Control of Grid-Connected Inverters

IEEE Transactions on Industrial Electronics, 2016
In this paper, an uncertainty and disturbance estimator (UDE)-based robust power flow control is developed for grid-connected inverters to achieve accurate power delivery to the grid. The model of power delivering with both frequency dynamics and voltage dynamics is derived at first.
Yeqin Wang, Beibei Ren, Qing-Chang Zhong
openaire   +1 more source

A Decentralized Control for Cascaded Inverters in Grid-Connected Applications

IEEE Transactions on Industrial Electronics, 2020
In this letter, a decentralized control for cascaded inverters is introduced, in which one inverter is controlled as a current source and the others are controlled as voltage sources. The power sharing and synchronization of the inverters are realized without high-bandwidth communication.
Lang Li, Yao Sun 0001, Hua Han 0003, Guangze Shi, Mei Su 0001, Minghui Zheng   +5 more
openaire   +1 more source

Research on Isolated Grid Connected Series Resonant Inverter

Proceedings of the 2019 2nd International Conference on Electronics and Electrical Engineering Technology, 2019
Galvanic isolation and power quality improvement are significant requirements in Grid Connected Micro-Inverters (GCMI). The efficiency, size and cost are the major concerns in isolated Grid Connected Inverters (GCI). This paper presents a novel single stage Isolated Grid Connected-Series Resonant Inverter (IGC-SRI) topology, employed for medium power ...
Imad Hussain, Muhammad Mansoor Khan, Yaqoob Ali, Abdar Ali, Danish Khan, Asad Khan   +5 more
openaire   +1 more source

Comprehensive distortion compensation of grid-connected inverter currents

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014
The paper presents a comprehensive approach to the compensation of phase current distortion of grid-connected power inverters. Four different sources of current distortion are addressed: imperfect grid synchronization caused by the distortion in the grid voltages, voltage fluctuations in the dc link, time delays in the estimation of grid voltages, and ...
Artur Cichowski, Piotr Banach, Wojciech Sleszynski, Janusz Nieznanski   +3 more
openaire   +1 more source