Title:
MICRO VARISTOR COMPOSITE, DISPERSION OF MICRO VARISTOR COMPOSITE, NONLINEAR RESISTANCE MATERIAL, AND ELECTRIC FIELD RELAXATION STRUCTURE
Document Type and Number:
Japanese Patent JP2023030380
Kind Code:
A
Abstract:
To improve electric field relaxation at coil ends of high-frequency and high-voltage electric motors.SOLUTION: A micro varistor composite includes a micro varistor filler mainly composed of silane-coupling-treated zinc oxide, a resin containing varnish as a main component, and a conductive filler containing carbon black as a main component, and the dispersion impregnates an insulating fabric to form a nonlinear resistance material. This nonlinear resistance material forms the high resistance layer 13 of the coil ends 30 of a stator 2.SELECTED DRAWING: Figure 1
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Inventors:
TAIRA KENICHI
Application Number:
JP2021135472A
Publication Date:
March 08, 2023
Filing Date:
August 23, 2021
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H01C7/12; H01B17/60; H01C7/112; H02K3/40
Attorney, Agent or Firm:
Hiromichi Kobayashi
Kiyoshi Tomioka
Hidehisa Uzawa
Tomoyuki Ota
Kiyoshi Tomioka
Hidehisa Uzawa
Tomoyuki Ota
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