Results 31 to 40 of about 1,345,661 (295)

Research on dead-time compensation of common DC bus OW-PMSM based on 120°decoupling modulation

Energy Reports, 2022
To suppress the switching dead-band in the Open-End Winding Permanent Magnet Synchronous Machine with Common DC bus (OW-PMSM-CDCB) drive system, the dual-inverter switch dead-band generates zero-sequence voltage and current during 120°decoupling ...
Shirui Xie, Yinhang Ning, Zhaoyuan Zhang, Haihong Qin, Xinpeng Feng, Chaohui Zhao   +5 more
doaj   +1 more source

Demagnetisation fault detection in PMSM using zero sequence current components

Electronics Letters, 2017
A demagnetisation fault detection method for a delta‐connected permanent magnet synchronous machine (PMSM) based on zero sequence current components (ZSCC) is proposed. The model of the delta‐connected PMSM with the demagnetisation fault is first established.
Shichuan Ding, Jun Hang, Hao Li, Qunjing Wang   +3 more
openaire   +1 more source

Reliability Improvement Strategy for Transformer Zero-Sequence Differential Protection Based on Zero-Sequence Current Amplitude Difference Characteristics

Zhongguo dianli
The zero-sequence differential protection of transformer may cause the reliability to decrease or even malfunction due to the fault of current transformer (CT) when dealing with complex inrush current and fault.
Junchao ZHENG, Yaming GE, Xiangping KONG, Xuchao REN, Shi CHEN, Chenqing WANG   +5 more
doaj   +1 more source

FPGA Implementation of a General Space Vector Approach on a 6-Leg Voltage Source Inverter [PDF]

, 2011
A general algorithm of a Space Vector approach is implemented on a 6-leg VSI controlling a PM synchronous machine with three independent phases. In this last case, the necessity of controlling the zero-sequence current motivates the choice of a special ...
BRUYERE, Antoine, CENSE, Sébastien, COLAS, Frédéric, IDKHAJINE, Lahoucine, KESTELYN, Xavier, SANDULESCU, Paul, SEMAIL, Eric   +6 more
core   +6 more sources

Research on Circulating Current Suppression Control of Parallel Inverters

Energies
Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study.
Yibiao Fan, Lixia Tong, Xiaoping Wang, Xiaowei Cai, Zhihe Fu, Junhui Zhou, Shuangmao Huang, Xingkui Mao   +7 more
doaj   +1 more source

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

Energies, 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, Chunhua Liu, Senyi Liu, Zaixin Song   +3 more
doaj   +1 more source

Characteristic Quantity Analysis of Single-Phase Contact Tree Ground Fault of Distribution Network Overhead Lines

Energies, 2023
When the overhead line passes through the forest area, the conductor may contact the line to induce the tree-contact single-phase-to-ground fault (TSF), and the persistence of TSF may induce wildfires, bringing serious consequences.
Jianbo He, Yao Zhou, Yilin Li, Guangqing Zhang, Jiayu Liang, Hao Shang, Wenjun Ning   +6 more
doaj   +1 more source

A simple current control strategy for a four-leg indirect matrix converter [PDF]

, 2014
In this paper the experimental validation of a predictive current control strategy for a four-leg indirect matrix converter is presented. The four-leg indirect matrix converter can supply energy to an unbalanced three-phase load whilst providing a path ...
Espinoza, Jose, Garcia, Cristian, Lopez, Miguel, Pena, Ruben, Rivera, Marco, Rodriguez, Jose, Wheeler, Patrick   +6 more
core   +2 more sources

Analysis of Mine Low-voltage Leakage Protection in Situation of Great Disparity between Long and Short Lines and Big Unbalanced Current

Gong-kuang zidonghua, 2010
The paper explained that traditional leakage protection principles such as zero-sequence direction relay principle and zero-sequence current's maximum principle are unable to implement selective leakage protection in situation of great disparity between ...
SU Po, CHEN Qing
doaj   +2 more sources

Control of a Modular Multi-level Converter STATCOM for Low Voltage Ride-Through Condition [PDF]

, 2016
This paper presents a simulation study on the implementation of the Single Star Flying Capacitor Converter Modular Multi-level Cascaded Converter (MMCC-SSFCC) as a STATCOM operating under voltage sag condition.
Oghorada, OJK, Zhang, L
core   +2 more sources