Results 281 to 290 of about 1,722,896 (320)

APF-based cancellation of the source-end zero sequence current

2010 International School on Nonsinusoidal Currents and Compensation, 2010
Analytical assessment of the successful neutral current cancellation methods is the main goal of this paper. Furthermore, proposing a generalized time-domain method is pursued in order to achieve full cancellation of the source-end neutral current under unbalanced and distorted load voltage waveforms.
Ehsan Pashajavid, Mohammad Tavakoli Bina
openaire   +1 more source

Zero-Sequence Current Distribution Along Transmission Lines

IEEE Transactions on Power Apparatus and Systems, 1969
The zero-sequence current distribution among ground wires and the ground-return path of overhead transmission lines is subject to change in the vicinity of a ground fault and the feeding point. This paper introduces the concepts used in connection with the end-effect phenomena of transmission lines and describes the necessity for solving the end-effect
openaire   +1 more source

Wavelet Based Induction Motor Fault Diagnosis Using Zero Sequence Current

Journal of Computational and Theoretical Nanoscience, 2017
Induction motor stator fault is diagnosed by applying Discrete Wavelet transform on zero sequence components. The single phasing stator fault is created and diagnosed in the induction motor model developed in stationary reference frame, under varying load conditions. The stator inter-turn incipient fault is created and diagnosed in the induction motor
W Abitha Memala, V Rajini
openaire   +1 more source

Improved Finite-State Model Predictive Current Control With Zero-Sequence Current Suppression for OEW-SPMSM Drives

IEEE transactions on power electronics, 2020
In order to suppress zero-sequence current (ZSC) for open-end winding surfaced permanent magnet synchronous machine (OEW-SPMSM) drives with single dc voltage source, many methods have been employed.
Xin Yuan, Shuo Zhang, Chengning Zhang, M. Degano, G. Buticchi, A. Galassini   +5 more
semanticscholar   +1 more source

Fault Section Identification Based on Per-unit Zero Sequence Current

12th IET International Conference on Developments in Power System Protection (DPSP 2014), 2014
Although single phase to ground fault location in non-solid grounded networks has been studied for many years and a lot of research has been done, yet adequate solution for direct fault location of radial distribution network hasn't been made, especially for the distribution network with the neutral point grounded via arc suppression coil.
null Xiangning Lin, null Zhengtian Li, null Jinwen Sun, null Rongjin Zheng, null Zhiqian Bo, null Zhongkang Wei, I. Kursan, null Jianfei Xu   +7 more
openaire   +1 more source

THE INFLUENCE OF ZERO SEQUENCE CURRENTS ON PHASE CURRENT REDUCTION IN ASYMMETRICALLY TAPPED SYSTEMS

SSRN Electronic Journal
This paper addresses the counter-intuitive phenomenon of phase current reduction in a three-phase system with asymmetrical tap changer positions. Specifically, the study examines cases where a transformer's phase B tap is stuck and is unable to switch while phases A and C are at lower taps.
Mehmood, Rana Shaheer, Zhang, Peng
openaire   +1 more source

Soil resistivity: Field tests and estimation of zero-sequence currents

2017 IEEE AFRICON, 2017
In this study, field measurements of soil resistivity using the 4-point Wenner test method were conducted in several parts of Gauteng, a province in South Africa. The data obtained were used to determine soil resistance values, and therefore to estimate zero-sequence current for a DigSilent™ simulated ground fault.
Q. Louw, P. Bokoro
openaire   +1 more source

Design of Zero-Sequence Current Controller for Open-End Winding PMSMs Considering Current Measurement Errors

IEEE transactions on power electronics, 2020
Open-end winding permanent magnet synchronous machines (OW-PMSMs) supplied by dual inverters have gained increasing research focus due to its advantages in multilevel modulation, flexible control capability, and enhanced fault-tolerant performance.
Zhanfeng Song, Xiaohui Ma, Yun Yu
semanticscholar   +1 more source

Zero-sequence current injection based power flow control strategy for grid inverter interfaced renewable energy systems

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
This paper deals with an energy management issue for the grid-connected renewable energy sources connected with unbalanced loads. In the grid-connected energy systems, conventional energy management methods are used to manage balanced active power ...
M. S. Aygen, Mustafa Inci
semanticscholar   +1 more source

A Zero Common Mode Voltage PWM Scheme With Minimum Zero-Sequence Circulating Current for Two-Parallel Three-Phase Two-Level Converters

IEEE Journal of Emerging and Selected Topics in Power Electronics
This article introduces a pulse width modulation (PWM) scheme for both common mode voltage elimination and zero-sequence circulating current suppression.
Zhiyong Zeng, Stefan M. Goetz
semanticscholar   +1 more source