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Reliability assessment of key technologies for high temperature electrical machines

Objective

The project objective is to evaluate the reliability of motor winding technologies able to work at high temperatures. To achieve this goal within the time define in the Clean Sky call sheet, it is necessary to rely on existing technologies, which offer opportunities for rapid implementations on conventional machines, while opening new opportunities towards higher temperatures with innovative technologies.
Three sets of technologies will be studied:
- The technologies based on enamelled wires associated to polymer impregnation varnishes.
- Technologies based on wires wrapped with glass fibber associated to impregnations made with epoxy resins.
- The insulation technologies based on ceramics, which offer potential prospects for very high temperatures.

The three sets of technologies will be tested for increasing temperatures on representative test vehicles (twisted pairs, transformer coils and motorettes) involving measurement systems able to get the main parameters of the insulation system (DC and AC leakage currents, partial discharge inception voltage, breakdown voltage, …). The analysis of changes in recorded parameters during the test campaigns will estimate the maximum permissible temperature in the heart of the winding for each technology. These data, combined with constraints of implementation of each technology will define recommendations for the design of electrical machines able to operate at high temperatures for each selected technology.

The part relating to the use of ceramic insulations opens the way to a major technological leap. With such materials, the maximum operating temperature of electrical machines will no longer be imposed by the winding insulation system but by other parts (magnetic or mechanical), consequently new design methods will have to be developed. It is therefore important to put this new approach against the best we might obtain from other technologies by proposing solutions applicable in the short term.

Field of science

  • /engineering and technology/materials engineering/ceramics

Call for proposal

SP1-JTI-CS-2011-01
See other projects for this call

Funding Scheme

JTI-CS - Joint Technology Initiatives - Clean Sky

Coordinator

UNIVERSITE D'ARTOIS
Address
Rue Du Temple 9
62000 Arras
France
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 119 126,40
Administrative Contact
Gabriel Velu (Prof.)

Participants (2)

UNIVERSITE PAUL SABATIER TOULOUSE III
France
EU contribution
€ 82 719
Address
Route De Narbonne 118
31062 Toulouse Cedex 9
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Carole Matthia (Ms.)
Ecole Superieure D'Eiectricite
France
EU contribution
€ 17 538
Address
Rue Joliot Curie - Plateau De Moulon 3
91192 Gif Sur Yvette Cedex
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Fanny Gaget (Ms.)