Results 261 to 270 of about 265,688 (306)

Dependence of Zero-Sequence Voltage Measurements on Static Eccentricity of PMSMs

IEEE Transactions on Industrial Electronics
The impact of the static eccentricity fault on electrical machines has been extensively explored in the literature. Various contributions have provided valuable models, such as the modified winding function approach (MWFA), which effectively characterizes the inductance behavior of an eccentric permanent magnet synchronous machine (PMSM).
Carsten Klein, Marco Palmieri, Matthias Nienhaus, Emanuele Grasso   +3 more
openaire   +2 more sources

Zero-Sequence Voltage Modulation Strategy for Multiparallel Converters Circulating Current Suppression

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, Marco Liserre, Zhe Chen 0007, Xiaojie Wu   +3 more
openaire   +1 more source

Zero sequence voltage suppression control with capacitor voltage balancing for a modular multilevel matrix converter

2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), 2015
Zero sequence voltage suppression control for a modular multilevel matrix converter is investigated, which is required for applications to power systems and high power motor drives. The schemes of power flow control and capacitor voltage balancing control with voltage space vector modulation have been proposed.
Yushi Miura, Keiji Inubushi, Tomoya Yoshida, Takuya Fujikawa, Toshifumi Ise   +4 more
openaire   +1 more source

Zero-sequence current dynamics in parallel-connected voltage source converters

2009 IEEE Electric Ship Technologies Symposium, 2009
Multiple three-phase voltage source converters may be connected in parallel to supply an AC voltage bus or a load in excess of the rating of an individual power converter. Without a circulating path, a zero-sequence current generally does not exist in a single power converter; however, it typically exists in parallel-connected three-phase power ...
null Yu Zhang, null Zhenhua Jiang
openaire   +1 more source

A new method for fault line selection based on correlation between zero-sequence voltage in bus and zero-sequence current in feeders

2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2015
It is difficult to select the fault line due to the weak current when the single-phase grounding fault occurs in the resonant grounding system. A new method based on correlation between zero-sequence voltage in bus and zero-sequence current in feeders is proposed in this paper.
Yunkun Xiang, Yun Jiang, Yuanzhi Ning, Fang Tao, Bohan Liu   +4 more
openaire   +1 more source

A space vector modulation for a low zero-sequence voltage output

IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003
A space vector PWM (SVM) algorithm is designed to prevent zero-sequence currents between tandem inverters in three phase applications. The development is motivated and illustrated by a GTO/IGBT inverter system, feeding a large three phase motor. In applications where harmonic emissions are highly undesirable, the low power/fast switching IGBT is used ...
openaire   +1 more source

Study on the adaptive impedance relay based on zero sequence voltage polarization

7th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2006), 2006
An adaptive impedance relay based on zero sequence voltage polarization is proposed in this paper. The dynamic operating border of this relay is completely the same with operating border of the fault phase voltage UKφ of fault point, and its earth resistances possess sound adaptivity.
null Lan Yang, null Duo Chen, null Xiangjun Zeng, null Ting Fang Yang, null Zhong Chen   +4 more
openaire   +1 more source

Operation of dynamic voltage restorers without zero sequence compensation capability

2010 9th IEEE/IAS International Conference on Industry Applications - INDUSCON 2010, 2010
Dynamic voltage compensators have been playing important role in the protection of sensitive loads against disturbances, as voltage sags and swells. One implementation option for such equipment is based on the use of a conventional three-phase inverter, which is not able to inject zero sequence components.
Leonardo Muller V. Starling, Filipe Dias de Oliveira, Sidelmo M. Silva, Braz de J. Cardoso Filho   +3 more
openaire   +1 more source

Study of a DC-Voltage Equalizing Circuit and a Zero-Sequence Voltage Control Method for a Diode-Clamped Linear Amplifier

IEEJ Transactions on Industry Applications, 2009
2,3 This paper proposes a DC voltage equalizing circuit for a diode-clamped linear amplifier (DCLA). The DCLA consists of series-connected complementary MOSFETs and diode clamping circuits, with an experimental efficiency as high as 90% without switching operation.
Naoya Yamashita, Hideaki Fujita
openaire   +1 more source

Rotor position estimation of ac machines using the zero sequence carrier signal voltage

Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting., 2004
This paper analyzes the sensorless control of AC machines based on the zero sequence voltage generated by the injection of a carrier signal voltage. The analysis focuses on rotor position estimation (tracking of rotor-position-dependent saliencies) but the methods discussed apply equally to flux position estimation (tracking of flux-dependent ...
F. Briz, M.W. Degner, P. Garcia, J.M. Guerrero   +3 more
openaire   +1 more source