The effects of laminations on steep fronted surge propagation in large A. C. motor coils

Journal Article · Wed Feb 28 23:00:00 EST 1990 · IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/60.50817· OSTI ID:6913046

Keerthipala, W W.L.; McLaren, P G ^[1]

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1. Manitoba Univ., Winnipeg, MB (Canada). Dept. of Electrical Engineering

To date the modelling of machine windings for steep fronted surge propagation has been based on an assumption that the slot walls act as flux barriers at the frequencies of interest (1 to 10 MHz). This assumption led to the use of a line end coil structure embedded in a solid slot core for experiments and an agreement between measured and computed waveforms has been reported by McLaren et al. The assumption is valid for a solid slot environment as the magnetic flux cannot penetrate beyond the skin depth, {delta} , which is of the order of 10 {sup -6} m for the frequencies concerned. However, this is not the case for a laminated slot environment as it can allow magnetic flux penetration deeper into the core than the skin depth {delta}. The study presented in this paper looks into the effects of such a flux penetration on steep fronted surge propagation in large a.c. motor coils.

• OSTI ID: 6913046
• Journal Information: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (USA) Vol. 5:1; ISSN ITCNE; ISSN 0885-8969
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
AC SYSTEMS
COMPUTER CALCULATIONS
DATA
ELECTRIC MOTORS
ENERGY SYSTEMS
EXPERIMENTAL DATA
INFORMATION
MAGNETIC FLUX
MOTORS
NUMERICAL DATA
POWER SYSTEMS
SURGES