Results 161 to 170 of about 5,995,861 (234)

Optimization of zero-sequence voltage compensation for zero-sequence directional elements

Electric Power Systems Research, 2021
Abstract Compensating zero-sequence voltage measured is an effective measure to improve the sensitivity of zero-sequence directional overcurrent protections. However, when applied to double circuit power supply system, it may lead to misjudgment of zero-sequence directional elements.
Hao Xu, Chaoyong YIN, Guoqin DONG, Shannuo WANG, Liqiang XU, Fan OUYANG, Weijun ZHU   +6 more
openaire   +1 more source

Novel SVPWM for Open Winding PMSM Drives With Simultaneous Common Mode Voltage Control and Full Frequency Zero Sequence Current Suppression

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023
Zero sequence voltage (ZSV) can cause zero sequence current (ZSC), while variation of common mode voltage (CMV) can cause bearing current in an open winding (OW) permanent magnet synchronous machine (PMSM) fed by common dc -bus dual two-level inverters ...
Lei Xu, Z. Zhu
semanticscholar   +1 more source

Multivector-Based Model Predictive Current Control With Zero-Sequence Current Suppression for Three-Phase Series-End Winding Permanent Magnet Synchronous Motor Drives

IEEE Transactions on Transportation Electrification, 2023
To suppress the zero-sequence current and enhance the steady-state performance of the three-phase series-end winding permanent magnet synchronous motor (TPSW-PMSM) drives, a multivector-based model predictive current control (MV-MPCC) scheme with zero ...
Zhiping Dong, Yong Chen, Kuo Feng, Chunhua Liu   +3 more
semanticscholar   +1 more source

Zero-Sequence Current Suppression Strategy With Common-Mode Voltage Control for Open-End Winding PMSM Drives With Common DC Bus

IEEE transactions on industrial electronics (1982. Print), 2021
The zero-sequence loop inherently exists in the structure of the three-phase open-end winding permanent-magnet synchronous machine (OW-PMSM) system with common dc bus, which provides the circulating path for zero-sequence current (ZSC) and consequently ...
Wei Hu, Chenhui Ruan, H. Nian, Dan Sun
semanticscholar   +1 more source

An FTU-Based Method for Locating Single-Phase High-Impedance Faults Using Transient Zero-Sequence Admittance in Resonant Grounding Systems

IEEE Transactions on Power Delivery, 2022
A novel fault location scheme using feeder terminal units (FTUs) for high-impedance grounding faults in resonant grounding systems (RGSs) is presented. The parallel resonance for a high-impedance fault (HIF) in an RGS with inverter-interfaced distributed
Jie Li, Yinliang Liu, Chengxin Li, Dehui Zeng, Haifeng Li, G. Wang   +5 more
semanticscholar   +1 more source

A Modified DPWM Method With Minimal Line Current Ripple and Zero-Sequence Circulating Current for Two Parallel Interleaved 2L-VSIs

IEEE transactions on industrial electronics (1982. Print), 2022
High-performance comprehensive optimization of line current ripple, zero-sequence circulating current (ZSCC), and switching losses is a challenge for parallel interleaved inverters.
Shiming He, Yadong Wang, Bangyin Liu
semanticscholar   +1 more source

Optimal Discontinuous Space Vector PWM for Zero-Sequence-Circulating Current Reduction in Two Paralleled Three-Phase Two-Level Converter

IEEE transactions on industrial electronics (1982. Print), 2021
This article proposes an optimal discontinuous pulsewidth modulation (ODPWM) strategy to reduce the zero-sequence circulating current (ZSCC) for paralleled three-phase two-level converters.
Zhiyong Zeng, Zhongxi Li, S. Goetz
semanticscholar   +1 more source

An Analytical Simplified Three-Level SVPWM With Unified Zero-Sequence Component Injection

IEEE Transactions on Power Delivery, 2022
The carrier-based pulse width modulation (CBPWM) with zero-sequence component injection is equivalent to the space-vector PWM (SVPWM), and hence it can be taken as a simplified alternative to the SVPWM.
Q. Yan, Xincheng Zhang, Tianrun Zhao, Xibo Yuan, Rende Zhao   +4 more
semanticscholar   +1 more source

Zero-Sequence Circulating Current Analysis and Suppression for Multimodular Interleaved Parallel Inverters

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Modular interleaved parallel inverters with shared dc and ac bus will introduce the zero-sequence circulating current (ZSCC) between the paralleled modules. Larger ZSCC may increase the current stress of power switches and reduce system efficiency.
Shiming He, Ao Sun, Bangyin Liu
semanticscholar   +1 more source

Zero-Sequence Current Reduction Technique for Electrical Machine Emulators With DC Coupling by Regulating the SVM Zero States

IEEE transactions on industrial electronics (1982. Print), 2022
In this article, a new zero-sequence current suppression technique for electrical machine emulators with reduced component count is proposed. The proposed control scheme is implemented by properly regulating the zero states in space vector modulation ...
G. Mademlis, Nimananda Sharma, Yujing Liu, Junfei Tang   +3 more
semanticscholar   +1 more source