Results 31 to 40 of about 1,722,896 (320)

Analysis of unbalanced clustered voltage and control strategy of clustered voltage balancing for cascaded H-bridge STATCOM

Journal of Modern Power Systems and Clean Energy, 2019
To explore the clustered voltage balancing mechanism of the cascaded H-bridge static synchronous compensator (STATCOM), this paper analyzes the causes of unbalanced clustered voltage. The negative-sequence current caused by the compensation of unbalanced
Yu Jin, Jianze Wang, Yiqi Liu, Xinagyu Sai, Yanchao Ji   +4 more
doaj   +1 more source

Zero-sequence current suppression control for fault current damper based on model predictive control

Electric Power Systems Research, 2023
Electrical Sustainable ...
Ajay Shetgaonkar, Marjan Popov, Peter Palensky, Aleksandra Lekić   +3 more
openaire   +3 more sources

The theory of instantaneous power in three-phase four-wire systems: a comprehensive approach [PDF]

, 1999
This paper describes a holistic approach to the theory of instantaneous power in three-phase four-wire systems, focusing on the original theory created in 1983 and a modified theory presented in 1994.
Akagi, Hirofumi, Kim, Hyosung, Ogasawara, Satoshi   +2 more
core   +1 more source

Chromatic Zeros On Hierarchical Lattices and Equidistribution on Parameter Space [PDF]

, 2021
Associated to any finite simple graph $\Gamma$ is the chromatic polynomial $P_\Gamma(q)$ whose complex zeroes are called the chromatic zeros of $\Gamma$.
Chio, Ivan, Roeder, Roland
core   +2 more sources

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

Tripping of circuit breakers in PV installations due to zero sequence field impedance [PDF]

, 2011
On the roof of a wool processing company a 385 kWp PV installation is installed. When production of the installation is more than 60% of the rated power the circuit breaker trips.
Debruyne, Colin, Desmet, Jan, Vandevelde, Lieven, Verhelst, Bart   +3 more
core   +2 more sources

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

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

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

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