Results 11 to 20 of about 2,165 (267)

A Fault-Tolerant Control Strategy for Three-Level Grid-Connected NPC Inverters after Single-Arm Failure with Optimized SVPWM

open access: yesEnergies, 2023
Three-level NPC inverters have been widely used in grid-connected systems due to their superior performance compared with two-level inverters, but more switches lead to high fault probability.
Jingtao Huang   +3 more
doaj   +1 more source

Stability Analysis of Multi-Inverters Grid-Connected System Using Improved Current Source Impedance Ratio Criterion

open access: yesElektronika ir Elektrotechnika, 2019
Stability analysis of multi-inverters grid-connected system in electric vehicles power station is presented in this paper. An equivalent circuit model of the multi-inverters grid-connected system is built based on electrical network theory.
Hu Guozhen   +4 more
doaj   +1 more source

MPPT based on a novel load segmentations structure for PV applications

open access: yesAin Shams Engineering Journal, 2023
The main disadvantage of photovoltaic (PV) systems is the mismatch between load and generation profiles. To overcome this disadvantage, it is either connected to battery bank or connected to the utility grid via inverters.
Ahmed Samir Eldessouky   +2 more
doaj   +1 more source

Current-Limiting Droop Control of Grid-Connected Inverters [PDF]

open access: yesIEEE Transactions on Industrial Electronics, 2017
A current-limiting droop controller is proposed\ud for single-phase grid-connected inverters with an\ud LCL filter that can operate under both normal and faulty\ud grid conditions. The controller introduces bounded nonlinear\ud dynamics and, by using nonlinear input-to-state stability\ud theory, the current-limiting property of the inverter is ...
Zhong, Q., Konstantopoulos, G.
openaire   +2 more sources

Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters

open access: yesEnergies, 2019
The resonance problem of multi-paralleled grid-connected inverters with inductance-capacitance-inductance (LCL) filters is a core matter which bothers the safety and stability operation of new energy distribution networks. Based on the impedance model of
Haijun Tao   +3 more
doaj   +1 more source

Design of A Single-Phase Transformerless Grid-Connected PV Inverter ‎Considering Reduced Leakage Current and LVRT Grid Codes [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2021
A new single-phase transformerless grid-connected PV inverter is presented in this paper. Investigations in transformerless grid-connected PV inverters indicate the existence of the leakage current is directly related to the variable common-mode voltage (
F. Mohammadi   +3 more
doaj   +1 more source

Small-signal oscillatory stability of a grid-connected PV power generation farm affected by the increasing number of inverters in daisy-chain connection

open access: yesFrontiers in Energy Research, 2023
The daisy-chain connection of inverters is one of the basic configurations of the power collecting network in a grid-connected photovoltaic (PV) power generation farm.
Yi Zhou, Junzheng Cao, Jing Zhao
doaj   +1 more source

Harmonic Coupling Analysis and Suppression Strategy of Grid-connected Photovoltaic Inverter

open access: yesMATEC Web of Conferences, 2018
For the complex harmonic coupling problem caused by the parallel connection of grid-connected photovoltaic inverters to the grid, the mathematical models of a single three-phase inverter and two three-phase inverters connected in parallel are established
Tong Tao   +3 more
doaj   +1 more source

Stability Operation of Grid Connected Inverter [PDF]

open access: yesE3S Web of Conferences, 2019
In the modern electric grid, there is an active penetration of distributed renewable energy sources and energy storage systems, which often require connection by means of electronic converter. Energy sources connected in the grid by means of electronic converter or inverter has large different parameters and operating modes compared to the generation ...
Denis Armeev, Roman Chuvashev
openaire   +2 more sources

A Review of Synchronization Stability Analysis and Control Strategies for Grid-Connected Inverters [PDF]

open access: yesDianli jianshe
[Objective] With the increasing penetration of power electronic devices in the new power systems, the system is gradually evolving from a “physical synchronization” paradigm dominated by synchronous generators to a “control-based synchronization ...
LI Li, SONG Huihui, LIN Xinpo, YAN Zhibin, TIAN Xing, WU Yang
doaj   +1 more source

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