Results 211 to 220 of about 1,082,336 (265)

Core Loss Estimation in Electric Machines With Flux-Controlled Core Loss Tester

IEEE Transactions on Industry Applications, 2016
The complexity of core loss estimation is an essential limitation for electric machine design engineers. It is critical to estimate the core losses and reduce them in the design stage to improve the machine efficiency. Current estimation methods based on the Steinmetz equation and loss separation are not accurate enough even at the rated conditions ...
Burak Tekgun, Yilmaz Sozer, Igor Tsukerman, Parag Upadhyay, Steven Englebretson   +4 more
openaire   +1 more source

Core Loss Testing

IEEE Industry Applications Magazine, 2011
This Article Discusses the Basic components of core loss (hysteresis and eddy-current losses), the effect of frequency and lamination thickness, and other contributing factors. It also explains the effect of operating frequency of squirrel cage type-rotors and armatures and provides correction factors.
Chuck Yung, Travis Griffith
openaire   +1 more source

Core losses in partial core transformers

2022
The University of Canterbury High Voltage Laboratory frequently uses partial core resonant transformers to conduct high voltage testing within the New Zealand power industry. These transformers utilise a non-standard core design in which flux is not constrained around the entirety of its path.
openaire   +2 more sources

Reducing the core loss of amorphous cores for distribution transformers

Progress in Natural Science: Materials International, 2012
AbstractAlthough amorphous alloy ribbons have lower core loss, serious loss deterioration occurs in amorphous cores constructed from amorphous alloy ribbon for distribution transformer. In the present study, the loss deterioration mechanism and influencing factors of amorphous cores for distribution transformers were investigated.
Deren Li, Shaoxiong Zhou, Zhichao Lu
exaly   +2 more sources

Core Losses

1995
Abstract After copper losses, core losses are generally the second largest component of power loss or inefficiency in the brushless motor, although their significance may become overriding at very high speeds. They arise from the variation of magnetic flux-density throughout the core, particularly the stator core.
TJE Miller, R Rabinovici
openaire   +1 more source

High-Frequency Gap Losses in Nanocrystalline Cores

IEEE Transactions on Power Electronics, 2017
Finite element analysis is used to examine the gap losses that occur in finely laminated nanocrystalline inductor cores under high-frequency operation. The losses are seen to be concentrated in the region of the air gap and the dependence of the losses on key design parameters and operating conditions is explored.
Gerardo Calderon-Lopez, Andrew Forsyth, Yiren Wang   +2 more
exaly   +2 more sources

Social loss with respect to the core of an economy [PDF]

Social Choice and Welfare, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Core Losses Separation of Amorphous Alloy Core

Materials Science Forum, 2016
In this paper, the core losses of Fe80Si9B11, Fe78Si9B13 amorphous alloy cores were separated to investigate the behaviors of hysteresis loss, eddy current loss and additional loss in high frequency range. The results showed that the losses of amorphous alloy core were mainly composed of hysteresis loss in low frequency. With the increase of frequency,
Shan Hong Li, Li Jun Li, De Ren Li, Zhi Chao Lu   +3 more
openaire   +1 more source

Apparent core losses and core losses in five-limb amorphous transformer of 160 kVA

IEEE Transactions on Magnetics, 1998
Significant modifications of the shape of magnetic flux in columns and yokes were observed in the magnetic circuit of four amorphous cores used in a 3-phase transformer. The magnetic losses measured experimentally were significantly higher than the ones calculated theoretically.
S. Sieradzki, R. Rygal, M. Soinski
openaire   +1 more source

Transformer core losses

Electronics and Power, 1986
Great strides are being made in the development of new materials for use in transformer cores to reduce losses and reduce the operation costs of ...
openaire   +1 more source