Results 11 to 20 of about 62,229 (344)

Coordinated control strategies for unbalanced voltage suppression and optimization of SOC of battery in a bipolar DC microgrid with voltage balancer

open access: yesEnergy Reports, 2022
The unbalanced loads and distributed generations (DGs) will lead to an unbalanced current in the neutral line and further result in a voltage imbalance which will increase circuit power consumption and affect the stable operation of the bipolar DC ...
Shuyin Tan   +5 more
doaj   +1 more source

Improving voltage profile of unbalanced Low‐Voltage distribution networks via optimal placement and operation of distributed energy storage systems

open access: yesIET Renewable Power Generation, 2022
Distributed energy storage system (DESS) has flexible operating characteristics, and DESSs can be properly configured to effectively serve the voltage regulation of the active distribution network.
Yingliang Li, Heming Cai
doaj   +1 more source

Optimization of Voltage Unbalance Compensation by Smart Inverter

open access: yesEnergies, 2020
This paper presents a compensation method for unbalanced voltage through active and reactive power control by utilizing a smart inverter that improves the voltage unbalance index and detects an unbalanced state of voltage magnitude and phase, and thus ...
Ryuto Shigenobu   +5 more
doaj   +1 more source

An effective fault management scheme and comprehensive double line‐frequency ripple propagation analysis for MVDC networks

open access: yesIET Generation, Transmission & Distribution, 2021
This paper proposes an effective fault management scheme for medium‐voltage direct current (MVDC) networks, which includes a virtual‐impedance‐based fault current limiter (VI‐FCL) on the DC side and a positive‐negative‐sequence (PNS) control scheme on ...
Dongsen Sun   +3 more
doaj   +1 more source

Analysis of Allowable Unbalanced Load Conditions for T-Type Three-Level PWM Converter

open access: yesEnergies, 2021
Since a T-type three-level PWM converter has several advantages in terms of harmonics and conduction loss, it has been widely adopted for various low voltage applications. However, a neutral point voltage control is necessarily required for stable system
Kui-Jun Lee
doaj   +1 more source

Research on Three-phase Unbalance of Micro-grid Based on Active Disturbance Rejection Control

open access: yes发电技术, 2020
Under the condition of three-phase unbalanced load in micro-grid, three-phase four-leg inverter can solve the unbalanced three-phase output voltage because of unbalanced load.
Mengran QIAN, Hui LI, Xinxiu LIU
doaj   +1 more source

A dynamic functional model of diode bridge rectifier for unbalanced input voltage conditions

open access: yesIET Power Electronics, 2021
Diode bridge rectifiers are employed in many industrial applications wherein, under practical operating conditions, input voltages can be occasionally or inherently unbalanced.
Adel Deriszadeh   +3 more
doaj   +1 more source

Harmonic Modeling and Analysis for Parallel 12-Pulse Rectifier under Unbalanced Voltage Condition in Frequency-Domain

open access: yesEnergies, 2022
This paper treats a parallel 12-pulse rectifier as the study subject. The influence of unbalanced terminal voltage, the triggering angle, as well as the commutation angle of a thyristor-controlled rectifier circuit are considered in switching functions ...
Guochao Qian   +5 more
doaj   +1 more source

Voltage Reversal in Unbalanced Rectenna Association [PDF]

open access: yesIEEE Antennas and Wireless Propagation Letters, 2012
Rectifying antenna (rectenna) associations can be advantageously used to harvest electromagnetic energy from different directions. When the rectennas are associated in series, their output voltages are added, and the electrical dc energy is more easily exploitable. This letter shows that if a rectenna receives significantly less energy than the others (
Degrenne, Nicolas   +5 more
openaire   +3 more sources

A Control Method for Three-phase Inverters with Unbalanced and Nonlinear Loads

open access: yesZhejiang dianli, 2022
Focusing on three-phase inverter control with unbalanced and nonlinear loads in islanded microgrids, an inverter control method including fundamental voltage tracking, harmonic voltage suppression, active damping and output current limiting is proposed ...
XIA Xiang   +5 more
doaj   +1 more source

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