Progress in Japan in electrical insulation at high temperatures

Mitsui, H.

doi:10.1109/57.509921

Cited by 18 publications

(6 citation statements)

References 5 publications

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“…CERAFIL500 offers excellent electrical insulation properties; however, the mechanical performance does not match that of conventional resin‐based wires, especially in terms of mechanical flexibility and thermal expansion. Some form of binder is, therefore, used to hold the ceramic compound in place as an insulator; silicon is often used as a binder because it changes to an inorganic material when heated to high temperature [17]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Investigation of wire insulation for high‐temperature motor windings

Tshiloz¹,

Smith

Tuohy

et al. 2019

J. eng.

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Section: Resultsmentioning

confidence: 99%

Investigation of wire insulation for high‐temperature motor windings

Tshiloz¹,

Smith

Tuohy

et al. 2019

J. eng.

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“…Generally speaking, the inductance between the turns i and j, L ij , is defined as the ratio between the magnetic flux ϕ j in the tun j and a current I i in the same turn (i = j, self inductance) of in another one (i ≠ j, mutual inductance) (1). Noting l the length of the coil and neglecting the end effects, the flux in a turn is given by (2).…”

Section: Magnetic Couplingsmentioning

confidence: 99%

“…This concept is defined in standards by the temperature index [1]. A lot of research has been done to push this limit [2][3][4]. The very high temperature environments are until now forbidden for machine made with organic EISs, except for applications requiring a very short life times as smoke evacuation during the first minutes of fires [5,6].…”

Section: Introductionmentioning

confidence: 99%

Design of inorganic coils for high temperature electrical machines

2019

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The paper deals with a high frequency model of inorganic coils used to build high temperature (HT∘) motor. The HT∘ wire has a nickel layer that protects the copper against oxidation and a thin inorganic coating, which has poor electrical and mechanical properties. Therefore, the coils must be designed with a special care for getting a good distribution of turn-to-turn voltage during the fast transients excited by the steep fronted voltages of the PWM inverter.A specific coil structure is proposed and a high frequency (HF) equivalent circuit able to compute the turn-to-turn voltages during transients. The voltage distribution between the coils of a stator phase is also detailed.

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“…In order to cope with the challenges of extreme environments, organic-inorganiccomposite and pure inorganic insulation high-temperature-resistant electromagnetic wire came into being. High-temperature-resistant resin + ceramic/glass filler or pure ceramic and glass are used as insulation-layer materials [4]. The emergence of these two types of high-temperature-resistant-insulation electromagnetic wire marks a new exploration of electromagnetic wire insulation materials in extreme environments.…”

Section: Introductionmentioning

confidence: 99%

Research Progress in High-Temperature-Resistant Electromagnetic Wire

Li,

Feng,

Guo

et al. 2024

Materials

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Electromagnetic wire is the carrier of energy and signal transmission. With the rapid development in aerospace, atomic energy, and other industrial fields, there is an increasing demand for the high-temperature-resistance of electromagnetic wires. In using traditional electromagnetic wires, it is difficult to meet the current temperature-resistance requirements. Therefore, the development of high-temperature-resistant electromagnetic wire has extremely important application value. In this paper, high-temperature-resistant electromagnetic wires are divided into organic insulated high-temperature-resistant electromagnetic wires, organic–inorganic insulated composite high-temperature-resistant electromagnetic wires, and inorganic insulated high-temperature-resistant electromagnetic wires. The method of improving the temperature-resistance level of organic insulated high-temperature-resistant electromagnetic wire is introduced. The selection principle of organic–inorganic and inorganic insulation high-temperature-resistant electromagnetic-wire conductor materials is analyzed. The current research status of organic–inorganic and inorganic insulated high-temperature-resistant electromagnetic wires is reviewed. The technical routes for preparing inorganic insulated high-temperature-resistant electromagnetic wire are compared. Finally, the challenges faced by the current high-temperature-resistant electromagnetic wire are pointed out, and the future development direction of organic–inorganic-composite insulation and inorganic insulation high-temperature-resistant electromagnetic wire is proposed.

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Progress in Japan in electrical insulation at high temperatures

Cited by 18 publications

References 5 publications

Investigation of wire insulation for high‐temperature motor windings

Investigation of wire insulation for high‐temperature motor windings

Design of inorganic coils for high temperature electrical machines

Research Progress in High-Temperature-Resistant Electromagnetic Wire

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