scholarly journals Dynamic loss and magnetization loss of HTS coated conductors, stacks, and coils for high-speed synchronous machines

2020 ◽  
Vol 33 (8) ◽  
pp. 084008
Author(s):  
Hongye Zhang ◽  
Philip Machura ◽  
Kevin Kails ◽  
Hongyi Chen ◽  
Markus Mueller
Keyword(s):  
High Speed ◽  
Coated Conductors ◽  
Synchronous Machines ◽  
Magnetization Loss ◽  
Dynamic Loss

AC magnetization loss characteristics of HTS coated-conductors with magnetic substrates

2007 ◽  
Vol 463-465 ◽  
pp. 766-769 ◽  
Author(s):  
O. Tsukamoto ◽  
M. Liu ◽  
S. Odaka ◽  
D. Miyagi ◽  
K. Ohmatsu
Keyword(s):  
Coated Conductors ◽  
Magnetization Loss ◽  
Ac Magnetization

Modified concept of permanent magnet excited synchronous machines with improved high-speed features

2011 ◽  
Vol 60 (4) ◽  
pp. 531-540 ◽  
Author(s):  
H. May ◽  
R. Palka ◽  
P. Paplicki ◽  
S. Szkolny ◽  
W.-R. Canders
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Power Converter ◽  
Synchronous Machines ◽  
Battery Voltage ◽  
Excitation Field ◽  
Field Weakening ◽  
Single Tooth ◽  
Excitation Coil ◽  
Effective Excitation

Modified concept of permanent magnet excited synchronous machines with improved high-speed features Permanent magnet (PM) excited synchronous machines used in modern drives for electro-mobiles suffer in high speed regions from the limited battery-voltage. The field weakening requires designing machines with reduced power conversion properties or increasing the size of the power converter. A new concept of such a machine features PM excitation, single-tooth winding and an additional circumferential excitation coil fixed on the stator in the axial center of the machine. By the appropriate feeding of this coil, the amplitude of the voltage effective excitation field can be varied from zero to values above those of the conventional PM-machines. The capability of reducing the excitation field to zero is an important safety aspect in case of failing of the feeding convertor.

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