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Grid-connected converter without Interfacing Filters: Principle, Analysis and Implementation
European Conference on Cognitive Ergonomics, 2020In this paper, the concept of grid-connected inverter without interfacing filters is proposed. Conventional grid-side voltage sensors and traditional phase-locked loop (PLL) are removed. Only the grid current is feedback to implement grid synchronization
Yuchen He +5 more
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Grid connection of Modular Multilevel converter
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2016This paper presents the detailed understanding of Modular Multilevel converters for its applications in HVDC and FACTS. Along with this, mathematical model of the converter in state space representation is presented. Scalability and modular nature of this configuration are making it a promising VSI topology in high power applications.
Santhosh Ramayana M. +2 more
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Power-Synchronized Current Control for Grid- Connected Converter
2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021A novel power-synchronized current control (PSCC) is proposed in this paper. Compared with the conventional vector current control (VCC), phase-locked loop (PLL) is completely removed in this method. The power-based synchronization ensures stable operation in ultra-weak grid condition and also in islanded mode. Compared with power-synchronized control (
Xiao Wang, Xiongfei Wang
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IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
For three-phase LCL-type grid-connected converter, when it is attached to weak grid, current control interacts with phase-locked loop (PLL) via point of common coupling voltage.
Shiying Zhou +6 more
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For three-phase LCL-type grid-connected converter, when it is attached to weak grid, current control interacts with phase-locked loop (PLL) via point of common coupling voltage.
Shiying Zhou +6 more
semanticscholar +1 more source
Virtual External Perturbance-Based Impedance Measurement of Grid-Connected Converter
IEEE transactions on industrial electronics (1982. Print)The impedance of grid-connected converter (GCC) is crucial for the small-signal stability analysis of the renewable-energy system. Traditionally, the impedance of the power-electronic device is measured by primary-side perturbance method, connecting a ...
Quansen Rong +5 more
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IEEE Journal of Emerging and Selected Topics in Power Electronics
Grid-connected converters must remain coupled to the grid during a fault. They have to control the reactive currents injected to the grid because of its limited overload capacity. In particular, grid-forming (GFM) converters ride through the fault either
Diego Ri-os-Castro +2 more
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Grid-connected converters must remain coupled to the grid during a fault. They have to control the reactive currents injected to the grid because of its limited overload capacity. In particular, grid-forming (GFM) converters ride through the fault either
Diego Ri-os-Castro +2 more
semanticscholar +1 more source
IEEE Transactions on Industrial Informatics, 2019
This paper presents an alternative implementation of the finite control set model predictive control (FCS-MPC) approach for a 3-Ø, two-level grid-connected power converter.
K. Alam +4 more
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This paper presents an alternative implementation of the finite control set model predictive control (FCS-MPC) approach for a 3-Ø, two-level grid-connected power converter.
K. Alam +4 more
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Grid connected PV system using Cuk converter
2013 Annual International Conference on Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy, 2013In a Grid Connected Photo-voltaic System (GCPVS) maximum power is to be drawn from the PV array and has to be injected into the Grid, using suitable maximum power point tracking algorithms, converter topologies and control algorithms. Usually converter topologies such as buck, boost, buck-boost, sepic, flyback, push pull etc. are used.
M S Syam, T. Sreejith Kailas
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European Conference on Cognitive Ergonomics, 2018
For LCL-type grid-connected converter, the grid current control interacts with phase-locked loop (PLL) under weak grid, via point of common coupling (PCC) voltage. And PLL disturbance has negative effect on the grid current control.
Donghai Zhu +4 more
semanticscholar +1 more source
For LCL-type grid-connected converter, the grid current control interacts with phase-locked loop (PLL) under weak grid, via point of common coupling (PCC) voltage. And PLL disturbance has negative effect on the grid current control.
Donghai Zhu +4 more
semanticscholar +1 more source
IEEE transactions on power electronics, 2021
In a two-stage single-phase photovoltaic (PV) grid-connected inverter, the second harmonic current (SHC) in the PV panel will affect the maximum power point tracking operation and degrade the energy harvesting efficiency.
Shiqi Kan, X. Ruan, Xinze Huang, H. Dang
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In a two-stage single-phase photovoltaic (PV) grid-connected inverter, the second harmonic current (SHC) in the PV panel will affect the maximum power point tracking operation and degrade the energy harvesting efficiency.
Shiqi Kan, X. Ruan, Xinze Huang, H. Dang
semanticscholar +1 more source