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IEEE Transactions on Industrial Electronics, 2017 A zero-sequence circulating current (ZSCC) is typically generated among the multiparallel converters that share the common dc link and ac side without isolated transformers under the space vector modulation (SVM), due to the injected third-order zero-sequence voltage (ZSV).
Rongwu Zhu +3 more
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Predictive Zero-Sequence Current Control of Multiple Paralleled Power Converters
IEEE Transactions on Industrial Electronics, 2022Yu Li, Han He, Zhenbin Zhang
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Analysis and Suppression of Zero Sequence Circulating Current in Open Winding PMSM Drives With Common DC Bus [PDF]
IEEE Transactions on Industry Applications, 2017 In this paper, the zero sequence circulating current in open winding permanent magnet synchronous machine (OW-PMSM) drives with common dc bus is systematically analyzed for the first time.
Hanlin Zhan, Z Q Zhu, Milijana Odavic
exaly +2 more sources
Measurement and analysis of zero sequence current levels during normal operation
, 2019 In the Netherlands, power grids and railway systems are located in close proximity over considerable lengths. Zero-sequence currents in the transmission grid may have an influence on neighbouring systems through inductive coupling. Not much is known about these currents during normal operation: Literature on the topic is scarce and modelling is ...
Nauta, Sjoerd +5 more
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Drying Induction Motor Windings with Zero-Sequence Current
Russian Electrical Engineering, 2021A brief analysis of the main techniques of drying electric machine winding in an agricultural production environment is performed. An efficient drying technique is proposed in which these windings are hooked up to a feeding mains through capacitors, which allows creating a nonsymmetrical system of currents with a zero sequence that increases due to ...
Yu. Kh. Shogenov, A. Kh. Shogenov
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Design of Test System on Zero Sequence Current Transformers
2010 International Conference on Machine Vision and Human-machine Interface, 2010The zero sequence current transformer is one of the key component of permanent magnetism leakage circuit protection breaker and release relay. A C8051F120 microcontroller is used as the controller of performance test system of an intelligent zero sequence current transformers.
Da-neng Pi, Hai-zhou Gao
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A novel approach to eliminate zero-sequence harmonics current
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems, 2008Zero-sequence harmonics caused by nonlinear loads usually result in high voltage distortion levels throughout the facility, neutral conductor overloading, motor heating, transformer heating, increased losses, and excessive harmonic injection onto the utility supply system. This paper presents a novel method to eliminate zero-sequence harmonics by using
Qipeng Song +5 more
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Soil resistivity: Field tests and estimation of zero-sequence currents
2017 IEEE AFRICON, 2017In 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.
Quentin Louw, Pitshou N. Bokoro
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Zero-sequence Circulating Current Suppression Strategy for Microgrid Inverters
2021 IEEE International Conference on Mechatronics and Automation (ICMA), 2021The parallel connection of inverters in the microgrid system increases the system capacity, but also provides a basis for the generation of zero sequence circulating current (ZSCC). In order to solve the problems of system loss caused by ZSCC, an improved controller was designed.
Xuesong Zhou +3 more
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A study of zero-sequence current induced in a cable system
IEEE Transactions on Power Delivery, 1991Large zero-sequence currents found in an actual crossbonded cable system led to a study of their causes and a solution to the problem. Measured values were compared to calculated results by the BPA-EMTP circuit analysis program. It was found that the zero-sequence currents were circulating between different circuits in the cable system and that they ...
H. Nakanishi +6 more
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