Results 11 to 20 of about 3,044,924 (291)

Principle of Flexible Ground-Fault Arc Suppression Device Based on Zero-Sequence Voltage Regulation [PDF]

open access: yesIEEE Access, 2021
Single-line-to-ground (SLG) fault arcs cause the intermittent over-voltages, leading to short circuits within large-scale area. In this paper, a flexible arc suppression device is proposed, which adopts a zigzag grounding transformer, multi-terminal ...
Bishuang Fan   +6 more
doaj   +2 more sources

Phase-to-phase power balance control in flexible interconnection equipment by injecting zero sequence voltage

open access: yesXi'an Gongcheng Daxue xuebao
The multi terminal flexible interconnection equipment with cascaded full bridge and dual active bridge structure could connect AC power grid and multiple DC power grid, and instantaneous power differences in different DC power grids and sub module faults
WANG Bo   +4 more
doaj   +2 more sources

ASSESSMENT OF CONSUMER IMPACT ON VOLTAGE ASYMMETRY BY THE ZERO SEQUENCE AT THE POINT OF COMMON CONNECTION [PDF]

open access: yesВестник Северо-Кавказского федерального университета, 2022
The article presents a technique for assessment the level of consumers’ impact on the voltage asymmetry by the zero sequence at the point of common connection. The results of a computational experiment that determine the possibility of using the level of
Dmitrii Kostyukov
doaj   +1 more source

CARRIER SIGNAL INJECTION BASED SENSORLESS CONTROL OF PERMANENT MAGNET BRUSHLESS AC MACHINES [PDF]

open access: yes, 2012
This thesis is focused on the carrier signal injection based sensorless control of Permanent Magnet (PM) Brushless AC (BLAC) machines. Based on the machine saliency property, carrier signal injection based sensorless techniques have been well developed ...
Gong, Liming
core   +6 more sources

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region [PDF]

open access: yes, 2013
This paper presents and compares control strategies for three-phase open-end winding drives operating in the flux-weakening region. A six-leg inverter with a single dc-link is associated with the machine in order to use a single energy source.
KESTELYN, Xavier   +4 more
core   +1 more source

Neutral-point Voltage Control of Three-level NPC Inverter for Three-phase APF based on Zero-sequence Voltage Injection [PDF]

open access: yes, 2019
© 2019 IEEE. Active Power Filters (APF) have already adopted the three-level inverter topology in medium-voltage and high-power applications for solving power-quality problems.
Asif Khan   +9 more
core   +1 more source

Instantaneous Zero Sequence Voltage for Grid Energy Balancing under Unbalanced Power Generation

open access: yes, 2021
An instantaneous zero sequence voltage injection method is presented in this paper. The key novelty of this method lies in the ability to provide instantaneous zero sequence voltage references using stationary abc-framework variables with no numerical ...
Rojas, CA   +4 more
core   +1 more source

Deadbeat Predictive Current Control for Series-Winding PMSM Drive with Half-Bridge Power Module-Based Inverter

open access: yesEnergies, 2021
Series-winding topology (SWT) could improve the DC-link voltage utilization, as open-winding topology does. Meanwhile, it can greatly reduce the number of power devices. Firstly, for the half-bridge power modules (HBPMs)-based inverter, an N-phase series-
Zhiping Dong   +3 more
doaj   +1 more source

End effects in linear tubular motors and compensated position sensorless control based on pulsating voltage injection [PDF]

open access: yes, 2011
The sensorless position control of permanent-magnet (PM) synchronous motors can be successfully implemented by superimposing a high-frequency voltage signal on the control voltage.
CUPERTINO, Francesco   +9 more
core   +1 more source

Zero-Sequence Current Suppression for Open-Winding Permanent Magnet Brushless Motor Driving System Based on Second Order Generalized Integrator

open access: yesIEEE Access, 2020
The open-winding driving system can improve power density and torque output capacity of the motor. However, the open-winding topology with a common direct current (DC) power supply provides a path for the zero-sequence current, which contributes to the ...
Qing Lu   +3 more
doaj   +1 more source

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