Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Prabhakar Neti"'
Autor:
Prabhakar Neti, Stefan Grubic
Publikováno v:
IEEE Transactions on Industry Applications. 53:1054-1062
The breakdown of the stator insulation is one of the main causes of failure in medium- and high-voltage ac machines. Even though there are several techniques available to detect the failure of the ground-wall insulation and the turn insulation, there
Publikováno v:
IEEE Transactions on Industry Applications. 51:5352-5357
Defects in drivetrains of wind turbines are typically very costly due to the difficulty in accessing the defective components for repair and maintenance. Electrical discharge has been identified as one of the key root causes to defects in wind drivet
Publikováno v:
2018 IEEE Energy Conversion Congress and Exposition (ECCE).
Offline dissipation factor testing is one of the standard approaches to examine the condition of ac motor's stator winding insulation. An online technique to continuously monitor the condition of the groundwall and phase-to-phase insulation for ac ma
Publikováno v:
IEEE Transactions on Industry Applications. 51:2201-2207
Insulation failures are one of the most common failure modes of ac motors, particularly high-voltage motors. Online monitoring of insulation health of ac motors is important for preventing unexpected outages and minimizing the associated financial lo
Autor:
Karim Younsi, Prabhakar Neti, Joe Yingneng Zhou, Konrad Roman Weeber, Manoj Ramprasad Shah, John Raymond Krahn, C D Whitefield
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 17:1441-1452
A new on-line technique for monitoring the insulation condition of ac motor and generator stator windings is proposed. The approach uses a newly developed High-Sensitivity Current Transformer (HSCT) to precisely and non-invasively measure the differe
Publikováno v:
2015 IEEE Energy Conversion Congress and Exposition (ECCE).
Continuous online monitoring of electrical assets is critical for reducing the process downtime and the associated financial losses in industrial applications. Majority of large induction motors, which are critical to industrial applications, are mai
Publikováno v:
2013 IEEE Energy Conversion Congress and Exposition.
The offline capacitance and dissipation factor bridge test is an industry accepted standard test to assess the health condition of ground-wall insulation of industrial motors. However, so far, it was not possible to conduct this test online on large
Autor:
Prabhakar Neti, Pinjia Zhang
Publikováno v:
2013 IEEE Energy Conversion Congress and Exposition.
Drivetrain failures may cause severe damage to the wind turbines. In the previous work, detection of failures in generator bearing and gearbox gears using electrical signature analysis (ESA) has been investigated. However, the detection of defects of
Electrical signature analysis based online monitoring of drive-trains for doubly-fed wind generators
Publikováno v:
IECON
Drivetrain failures are one of the common failure modes of wind turbines. Their early detection, including the generator bearing and gearbox defects, is considered difficult using the state-of-the-art monitoring techniques. In this paper, a novel ele
Autor:
Xiaoguang Qi, Karim Younsi, Manoj Ramprasad Shah, Prabhakar Neti, Konrad Roman Weeber, Yingneng Zhou, Pinjia Zhang
Publikováno v:
2011 Electrical Insulation Conference (EIC)..
This paper discusses a novel online technique to detect moisture and surface tracking of stator end-winding insulation in medium/high voltage AC motors. A novel high sensitivity differential current transformer is used as a sensor for monitoring insu