|
| |
|
|
Design of placing high voltage electrodes of the projection set of electron microscope on insulating rods
Pavlas, Ondřej ; Musil, Vladislav (referee) ; Hejátková, Edita (advisor)
In it´s first part, this presented master´s thesis focuses on the problematics of actions taking place in dielectric materials and phenomenons on the surface of real insulators placed in electric field. This research is followed by selection and rating of appropriate ceramic materials for the actual design of the metal – ceramic assembly. The greatest emphasis is given to design of the optimal configuration of the insulator and electrode, which is supported by simulations from the software that implements finite element method. Eventually, the high voltage tests of the assembly used for measuring leakage currents are performed.
|
|
|
Faults identification of AC windings in production process
Samek, Josef ; Kurfűrst, Jiří (referee) ; Ondrůšek, Čestmír (advisor)
In this paper stator manufacturing process of stator is described. Mainly description is aimed on winding, insulation and copper wire. Discussion about origin of insulation damage possibilities during manufacturing is included. Statistics survey about failure causes of stator revealed during manufacturing process and warranty claims is presented. One test method from list of market available winding tests is chosen - partial discharge; described in detail and applied on the correct stator and the damaged stator. Results are interpreted.
|
|
|
Cable harness tester
Valenta, Jakub ; Valach, Soběslav (referee) ; Burian, František (advisor)
This semestral paper deals with the issues of testing and requirements examinations for cables and cable harnesses. These terms are defined in the work and the difference in their meaning is described. The work also describes the characteristic features of cables and cable harnesses, explains their importance and focuses in more detail on the variable properties that may change over time or that are dependent on manufacturing errors. The principles and procedures of tests of these properties are covered in the work and are the essence of the subsequent practical part. In this part, the work deals with the design of the measuring circuit prototype for testing of the insulation resistance of cables and their desired continuity in bundles. This design is then physically implemented, the processes of designing and implementing are described in detail and finally its functionality is tested and presented to the reader.
|
|
|
Cable harness tester
Valenta, Jakub ; Valach, Soběslav (referee) ; Burian, František (advisor)
This semestral paper deals with the issues of testing and requirements examinations for cables and cable harnesses. These terms are defined in the work and the difference in their meaning is described. The work also describes the characteristic features of cables and cable harnesses, explains their importance and focuses in more detail on the variable properties that may change over time or that are dependent on manufacturing errors. The principles and procedures of tests of these properties are covered in the work and are the essence of the subsequent practical part. In this part, the work deals with the design of the measuring circuit prototype for testing of the insulation resistance of cables and their desired continuity in bundles. This design is then physically implemented, the processes of designing and implementing are described in detail and finally its functionality is tested and presented to the reader.
|
|
|
Design of placing high voltage electrodes of the projection set of electron microscope on insulating rods
Pavlas, Ondřej ; Musil, Vladislav (referee) ; Hejátková, Edita (advisor)
In it´s first part, this presented master´s thesis focuses on the problematics of actions taking place in dielectric materials and phenomenons on the surface of real insulators placed in electric field. This research is followed by selection and rating of appropriate ceramic materials for the actual design of the metal – ceramic assembly. The greatest emphasis is given to design of the optimal configuration of the insulator and electrode, which is supported by simulations from the software that implements finite element method. Eventually, the high voltage tests of the assembly used for measuring leakage currents are performed.
|
|
| |
|
|
Faults identification of AC windings in production process
Samek, Josef ; Kurfűrst, Jiří (referee) ; Ondrůšek, Čestmír (advisor)
In this paper stator manufacturing process of stator is described. Mainly description is aimed on winding, insulation and copper wire. Discussion about origin of insulation damage possibilities during manufacturing is included. Statistics survey about failure causes of stator revealed during manufacturing process and warranty claims is presented. One test method from list of market available winding tests is chosen - partial discharge; described in detail and applied on the correct stator and the damaged stator. Results are interpreted.
|
guest ::
