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An Analytical Simplified Three-Level SVPWM With Unified Zero-Sequence Component Injection
IEEE Transactions on Power Delivery, 2022The 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.
Qingzeng Yan, Rende Zhao, Rende Zhao
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Research on zero-sequence component method for cable fault location detection
International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2024)Cable fault point detection is a critical aspect of power grid maintenance in electrical power systems. The accuracy, precision, and efficiency of cable fault point detection can directly impact the repair time of cable faults and are directly related to
Hongren Feng
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IEEE Transactions on Power Electronics
Among the existing discontinuous pulsewidth modulation (DPWM) schemes for three-level converters, the symmetrical DPWM can achieve relatively low common-mode voltages, and the redundant vectors are overall distributed equally for balancing the neutral ...
Qingzeng Yan, Qingxiao Du, Jinkui He
exaly +3 more sources
Among the existing discontinuous pulsewidth modulation (DPWM) schemes for three-level converters, the symmetrical DPWM can achieve relatively low common-mode voltages, and the redundant vectors are overall distributed equally for balancing the neutral ...
Qingzeng Yan, Qingxiao Du, Jinkui He
exaly +3 more sources
IEEE Transactions on Power Electronics, 2019
Owing to the operational characteristic of a Vienna rectifier, it is found that the traditional modulation method would result in the current distortion. This paper, therefore, proposes a novel zero-sequence component injection modulation method for improving the input quality of the Vienna rectifier with balanced or unbalanced dc-link voltages.
Feng Gao, Chenghui Zhang, Bin Duan
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Owing to the operational characteristic of a Vienna rectifier, it is found that the traditional modulation method would result in the current distortion. This paper, therefore, proposes a novel zero-sequence component injection modulation method for improving the input quality of the Vienna rectifier with balanced or unbalanced dc-link voltages.
Feng Gao, Chenghui Zhang, Bin Duan
exaly +3 more sources
High Impedance Fault Area Location in Distribution Systems Based on Current Zero Sequence Component
IEEE Latin America Transactions, 2016This paper presents a new methodology for detection and area location of high impedance faults (HIF) on unbalanced distribution systems. The method is called Quasi-Differential Zero Sequence Protection (PQDSZ) and it detects these faults by analyzing the current zero sequence rms value on a distribution feeder.
J.T.A. Vianna +2 more
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International Journal of Electrical Power and Energy Systems, 2020
The probability of single-phase high-impedance faults (HIFs) in a resonant grounding system is high, and the existing fault detection and line-section location methods have drawbacks such as low accuracy and implementation difficulties. In this paper, an
Haifeng Li
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The probability of single-phase high-impedance faults (HIFs) in a resonant grounding system is high, and the existing fault detection and line-section location methods have drawbacks such as low accuracy and implementation difficulties. In this paper, an
Haifeng Li
exaly +2 more sources
Impact of zero sequence component on voltage-source converters
Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579), 2003Presently, the preferred circuit of PWM (pulse width modulation) converters has the open-wye 3-phase connection, in which the zero sequence does not exist. Single-line-to-ground fault studies have shown that the grounded-wye connection is better from protection and security consideration.
null Lianxiang Tang, null Boon-Teck Ooi
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Induction machine diagnostics using zero sequence components
Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005., 2005Induction machine diagnostics using zero sequence components is presented in this paper. Electrical faults cause asymmetries in the phase impedances, producing a zero sequence voltage in wye-connected machines and a zero sequence current in delta-connected machines.
F. Briz +3 more
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