Results 11 to 20 of about 12,500,295 (288)
A Robust Vector Current Controller with Negative-Sequence Current Capability for Grid-Connected Inverters [PDF]
Energies, 2021 This paper presents a vector current controller (in the synchronous reference, or the dq, frame) with negative-sequence current injection capability for three-phase grid-connected converters.
Houshang Karimi +3 more
doaj +8 more sources
Revista EIA, 2019 This paper studied the use of a new stator current feature for detection of winding and cage bars faults in an induction motor, and presents the experimental validation of a detection and identification scheme using Support Vector Machines (SVM). This validation was performed in a test bed using 2 HP, 4 pole motors in which shorted winding and broken ...
Castillo, Silvia Oviedo +1 more
openaire +4 more sources
Energy Reports, 2023 During the fault of the wind power collection line of the MMC-HVDC system, the amplitude of the fault current may be limited due to the control of the converter, which leads to the severe limitation of traditional protection.
Peng Sun +5 more
doaj +2 more sources
Positive-Sequence Voltage Control, Full Negative-Sequence Cancellation, and Current Limitation for Static Compensators [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021 This paper presents a control scheme in the stationary reference frame for Static Synchronous Compensators that provides three features: 1) regulation of the positive sequence voltage to the nominal value, 2) full cancellation of the negative sequence voltage, and 3) peak limitation of the injected currents.
Camacho Santiago, Antonio +4 more
openaire +5 more sources
Impact of negative sequence current injection by wind power plants
2013 IEEE Power & Energy Society General Meeting, 2013 This paper presents an analysis of the impact from negative sequence current injection by wind power plants in power systems under steady-state and short-term unbalanced conditions, including faults. The separate positive and negative sequence current control capability of the grid-side converters of full scale converter type wind turbines may be ...
Sanjay K. Chaudhary +3 more
core +4 more sources
A Negative-sequence Current Injection Method to Mitigate Voltage Imbalances in Microgrids [PDF]
Eletrônica de Potência, 2011 This paper proposes a control strategy to reduce the voltage imbalances by injection of a proper negative-sequence current into the microgrid. This task can be done by each inverter connected to the microgrid in a shared way.
Gustavo M. S. Azevedo +4 more
doaj +2 more sources
A negative sequence current injection (NSCI)-based active protection scheme for islanded microgrids [PDF]
International Journal of Electrical Power & Energy SystemsThe growing penetration of converter interfaced generation creates unprecedented challenges to protection strategies at all voltage levels. This paper proposes a novel Negative Sequence Current Injection (NSCI)-based active protection scheme for islanded
Zhenkun Yang +2 more
doaj +5 more sources
Negative-sequence current filter based on inductance coils [PDF]
International Journal of Electrical and Computer Engineering (IJECE)The construction of new relay protection systems without the use of current transformers is a fundamental problem of electro energetics, which has not yet been solved. This works suggests a negative-sequence current filter which receives information from inductance coils (ICs) mounted at a safe distance in the magnetic field of phase currents.
Mark Kletsel +3 more
openaire +2 more sources
Negative sequence current compensation for stator shorted turn detection in induction motors
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012 Negative sequence current analysis is useful for shorted turn detection in induction motors. It can produce fast and reliable monitoring results using a simple measurement technique. However, it is sensitive to disturbances such as sensor calibration, inherent machine asymmetry and supply voltage unbalances.
Syaiful Bakhri +2 more
openaire +2 more sources
Ingeniería e Investigación, 2009 A negative sequence analysis in time domain was applied to fault detection of permanent magnet synchronous motors (PMSM). The fundamental components of the motor terminal currents were obtained using a Notch filter, based on which the negative se- quence
Jabid E. Quiroga
doaj +1 more source