Publications (20)17.71 Total impact
 [Show abstract] [Hide abstract]
ABSTRACT: This work is devoted to experimental investigation of a reluctance motor for which the rotor contains bulk superconducting elements to provide different permeabilities along the pole axes and in perpendicular direction. Three materials are under consideration  YBCO monocrystal plates, BSCCO foliate material and the bulk MgB2 plates. A comparative analysis of an output performance of the motor is done at the temperature below 20 K to define the best material with the ratio ''costquality''.  [Show abstract] [Hide abstract]
ABSTRACT: The parameters of electrical machines with a rather long rotor (L/D>34) and electromagnetic fields distribution in an active zone, as a rule, are determined on the basis of twodimensional electrodynamic problem solutions. At an analytical solution of electrodynamic problems it is usually supposed, that the magnetic permeability of the electric motor materials are constant. This restricts application of such methods in concrete developments of electrical machines. The way to take into account the magnetic properties of the electric motor materials, and also geometry of a tooth zone of the machine is using of numerical calculations of electromagnetic fields by a finite element method (FEM). In this article the technique allowing to make detail calculations of working processes and output parameters of a hightemperature superconductive reluctance motors (HTS RM) at specified voltage of a power network with the help of a FEM application program package "Quickfield v.4.1" is explained. The results of numerical calculations of concrete versions of HTS RM design are given.  [Show abstract] [Hide abstract]
ABSTRACT: This work describes the research and development of a cryogenic pump that is intended for the fuel supply of aircraft engines using advanced low temperature fuel. The basic design is that of 4pole reluctance motor. The rotor is constructed from soft iron and BSCCO/Ag laminated material; the latter developed by the AllRussian Scientific Research Institute of Inorganic Materials. The motor was integrated with a centrifugal cryogenic pump for the cryogenic fuel supply system, developed by the TUPOLEV Company. The results of theoretical modelling and experimental investigations are presented.  [Show abstract] [Hide abstract]
ABSTRACT: This work describes the research and development of a cryogenic pump that is intended for the fuel supply of aircraft engines using advanced low temperature fuel. The basic design is that of a 4pole reluctance motor. The rotor is constructed from soft iron and BSCCO/Ag laminated material; the latter was developed by the AllRussian Scientific Research Institute of Inorganic Materials. The motor was integrated with a centrifugal cryogenic pump for the cryogenic fuel supply system, developed by the TUPOLEV Company. The results of theoretical modelling and experimental investigations are presented.  [Show abstract] [Hide abstract]
ABSTRACT: New types of electric machines with the rotors containing bulk HTS (YBCO and Bi–Ag) elements are presented. Different schematics of hysteresis, reluctance, “trapped field” and composed synchronous HTS machines are discussed. The twodimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the singledomain and polycrystal YBCO ceramic samples and plate shape Bi–Ag elements. The test results of the series of hysteresis, reluctance, “trapped field” and composed with permanent magnets HTS motors with output power rating 0.1–18 kW and current frequency 50 and 400 Hz are given. These results show that in the media of liquid nitrogen the specific output power per one weight unit of HTS motors is 4–7 times better than for conventional electric machines. Comparison of the theoretical and experimental characteristics of the developed HTS motors show that they are in good agreement. The test results for liquid nitrogen cryogenic pump system with hysteresis 500 W HTS motor are discussed. The designs and first test results of HTS motor operating in the media of liquid nitrogen with output power 100 kW and power factor more than 0.8 are given. Future development and applications of new types of HTS motors for aerospace technology, onland industry and transport systems are discussed.  [Show abstract] [Hide abstract]
ABSTRACT: This work relates to the investigation of electrical machines having advanced BSCCO/Agsheathed elements which are being produced by the wellknown technology “powder in tube”. That foliate HTS material is being considered to be used in three types of electric machines: reluctance and hysteresis motors and synchronous machines with “trapped magnetic flux”. Depending on the thickness, quantity of BSCCO layers and filling factor they are being produced as thin and thick ones. Several smallscale experimental models of the abovementioned types were developed and tested in liquid nitrogen. The output power rating of reluctance motors with thin and thick HTS elements are 3 and 4 kW respectively. “Trapped field” machine was tested in generator mode for open circuit operation. The value of obtained magnetic flux density in the air gap is 0.8 T. 
Article: High Output Power Reluctance Electric Motors With Bulk HighTemperature Superconductor Elements
[Show abstract] [Hide abstract]
ABSTRACT: We present new types of electric machines with the rotors containing bulk hightemperature superconductor (HTS)—YBCO and Bi–Ag—elements. We discuss different schematics of hysteresis, reluctance, 'trapped field' and composed synchronous HTS machines. The twodimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the singledomain and polycrystal YBCO ceramic samples and plate shape Bi–Ag elements. We give the test results of the series of hysteresis, reluctance, 'trapped field' and composed with permanent magnets HTS motors with an output power rating of 0.1–18 kW and current frequencies 50 Hz and 400 Hz. These results show that in the media of liquid nitrogen the specific output power per one unit weight of the HTS motor is four to seven times better than for conventional electric machines. A comparison of the theoretical and experimental characteristics of the developed HTS motors show that they are in good agreement. We discuss the test results for a liquid nitrogen cryogenic pump system with a hysteresis 500 W HTS motor. We describe several designs of new HTS motors operating in the media of liquid nitrogen with an output power 125 kW (and more) and a power factor of more than 0.8. We discuss future applications of new types of HTS motors for aerospace technology, onland industry and transport systems. 
Conference Paper: High output power reluctance electric motors with bulk HTS elements
[Show abstract] [Hide abstract]
ABSTRACT: New types of electric machines with the rotors containing bulk HTS (YBCO and BiAg) elements are presented. Different schematics of hysteresis, reluctance, "trapped field" and composed synchronous HTS machines are discussed. The twodimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the singledomain and policrystal YBCO ceramic samples and plate shape BiAg elements. The test results of the series of hysteresis, reluctance, "trapped field" and composed with permanent magnet HTS motors with output power rating 0.118 kW and current frequency 50 Hz and 400 Hz are given. These results show that in the media of liquid nitrogen the specific output power per one weight unit of HTS motors is 47 times better then for conventional electric machines. Comparison of the theoretical and experimental characteristics of the developed HTS motors show that they are in good agreement. The test results for liquid nitrogen cryogenic pump system with hysteresis 500 W HTS motor are discussed. Several designs of new HTS motors operating in the media of liquid nitrogen with output power 125 kW (and more) and power factor more then 0.8 are described. Future applications of new types of HTS motors for aerospace technology, onland industry and transport systems are discussed  [Show abstract] [Hide abstract]
ABSTRACT: Novel types of electric HTS motors with the rotor containing bulk YBCO and Bi–Ag elements are presented. Different schematics of hysteresis, reluctance “trapped field” and composed HTS motors are discussed. Twodimensional mathematical models describing the processes in these types of HTS machines were developed on the basis of a theoretical analysis of the electrodynamic and hysteresis processes in multidomain and singledomain HTS ceramic samples. The test results of these HTS motors with output power 1–37 kW and current frequencies 50 and 400 Hz are given. The results show that in liquid nitrogen the specific output power per one weight unit is 4–5 times better then for conventional electric machines. The design of a new high power HTS motor operating in the liquid nitrogen with output power 200 kW (and more) is discussed. Future applications of new types of HTS motors for airspace and onland industry and transport systems are discussed.  [Show abstract] [Hide abstract]
ABSTRACT: Novel types of electric HTS motors with the rotor containing bulk YBCO and Bi–Ag elements are presented. Different schematics of hysteresis, reluctance “trapped field” and composed HTS motors are discussed. Twodimensional mathematical models describing the processes in these types of HTS machines were developed on the basis of a theoretical analysis of the electrodynamic and hysteresis processes in multidomain and singledomain HTS ceramic samples. The test results of these HTS motors with output power 1–37 kW and current frequencies 50 and 400 Hz are given. The results show that in liquid nitrogen the specific output power per one weight unit is 4–5 times better then for conventional electric machines. The design of a new high power HTS motor operating in the liquid nitrogen with output power 200 kW (and more) is discussed. Future applications of new types of HTS motors for airspace and onland industry and transport systems are discussed.  [Show abstract] [Hide abstract]
ABSTRACT: Novel types of electric HTS motors with the rotor containing bulk YBCO elements are presented. Different schematics of hysteresis, reluctance “trapped field” and composed HTS motors are discussed. The twodimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the multidomain and singledomain YBCO ceramic samples. The test results of the series of these HTS motors with output power 1–20 kW and current frequency 50 and 400 Hz are given. These results show that in the media of liquid nitrogen the specific output power per one weight unit is four to five times better then for conventional electric machines. The design of a new high power HTS motor operating in the liquid nitrogen with output power 200 kW (and more) is discussed. Future applications of new types of HTS motors for airspace and onland industry and transport systems are discussed.  [Show abstract] [Hide abstract]
ABSTRACT: Two new types of HTS electric machine are considered. The first type is hysteresis motors and generators with cylindrical and disc rotors containing bulk HTS elements. The second type is reluctance motors with compound HTSferromagnetic rotors. The compound HTSferromagnetic rotors, consisting of joined alternating bulk HTS (YBCO) and ferromagnetic (iron) plates, provide a new active material for electromechanical purposes. Such rotors have anisotropic properties (ferromagnetic in one direction and diamagnetic in the perpendicular one). Theoretical and experimental results for HTS hysteresis and reluctance motors are presented. A series of hysteresis HTS motors with output power rating from 1 kW (at 50 Hz) up to 4 kW (at 400 Hz) and a series of reluctance HTS motors with output power 218.5 kW (at 50 Hz) were constructed and successfully tested. It was shown that HTS reluctance motors could reach two to five times better overall dimensions and specific power than conventional asynchronous motors of the same size and will have higher values of power factor (cos ≥0.7 to 0.8).  [Show abstract] [Hide abstract]
ABSTRACT: Two new types of HTS electric machines are considered. The first type is hysteresis motors and generators with cylindrical and disk rotors containing bulk HTS elements. The second type is reluctance motors with compound HTSferromagnetic rotors. The compound HTSferromagnetic rotors, consisting of joined alternating bulk HTS (YBCO) and ferromagnetic (iron) plates, provide a new active material for electromechanical purposes. Such rotors have anisotropic properties (ferromagnetic in one direction and diamagnetic in perpendicular one). Theoretical and experimental results for HTS hysteresis and reluctance motors are presented. A series of hysteresis HTS motors with output power rating from 1 kW (50 Hz) up 4 kW (400 Hz) and a series of reluctance HTS motors with output power 29 kW (50 Hz) was constructed and successfully tested by the cooperation of MAI (Moscow, Russia) and IPHT (Jena, Germany). It was shown that HTS reluctance motors could reach 25 times higher specific output than conventional asynchronous motors of the same size and will have higher values of power factor (cosφ⩾0.70.8) 
 [Show abstract] [Hide abstract]
ABSTRACT: New types of electrical motors based on bulk high temperature superconductors (HTS) are presented. Theoretical and experimental research of these motors is described. Results for a series of 100, 300, 500 and 1000 W HTS motors with cylindrical and disk rotors are presented. It is shown that, at liquid nitrogen temperatures, the specific massdimension parameter of hysteresis HTS machines is 5–7 times better than for the conventional hysteresis machines.  [Show abstract] [Hide abstract]
ABSTRACT: Several hysteresis motors have been constructed with an output power up to 500 W at T=77 K. The rotors of these machines consist of melttextured YBCO. In this work, the authors present detailed investigations on the magnetic processes in these rotors. Spheres were cut from melttextured YBCO and investigated by rotating in vectorVSM. From these measurements, torque moments on the sample, hysteretic losses and the slip between external field and the sample can be calculated. The same dependence of the output power on the magnetic field for the samples as for the constructed motors can be derived. Influences of the critical current density and the domain size can be separated by changing the temperature 
Conference Paper: The present day state of the high temperature superconducting hysteresis machines development
[Show abstract] [Hide abstract]
ABSTRACT: The results of theoretical and experimental research of hysteresis electric machines with different types of high temperature superconducting rotor are presented in this paper. Data of improved comparative analysis of such machines to the conventional one are given. The output performances are obtained for the first hysteresis generator with the abovementioned rotor.  [Show abstract] [Hide abstract]
ABSTRACT: Bulk cplindrical pBCO blocks up to 5 cm in diameter are fabricated bp a modified melt texturing process. The multidomain material pith domain sipes of about 1 cm3 shops a caxis texture correlated pith the temperature gradient during the gropth process. Motivated bp the potential of material for applications as strong permanent magnets or in field trapping devices, pe studied the application relevant magnetic properties. puasisingle crpstalline domains pere extracted from the blocks and cut into cubes, cplinders, and discs pith pelldefined crpstal orientation. The anisotropic intradomain magnetic properties of these samples are measured bp vibration sample magnetometrp. Trapped inductions are calculated from the measured remanent magnetic moments mrem assuming a homogeneous magnetipation distribution in the sample. For a disc pith 4 mm diameter 2 T at 20 K and 4 T at 4.2 K trapped inductions are estimated. Flux jumps in the magnetipation loop are observed at 4.2 K. Flux trapping parallel to the caxis is dominant but also trapping parallel to the abplanes occurs in a near angular range. The anisotropp ratio is at 77 K. Sample shape effects on the flux trapping cannot be neglected.To characteripe the material properties that are relevant for levitation applications a 3D positioning spstem pith piepo force sensors respective Hall probes pas constructed. puasistatic measurements of the major and minor forceposition loops in the pero field cooled and field cooled state are performed. The pBCO blocks are tested in a demonstration model of an electromotor pith the shaft free rotating supported bp a hpbrid superconducting bearing up to 7000 rpm. The application in a field trapping device is tested bp using the material as a rotor of a 15 p hpsteresis electromotor. 
Conference Paper: Hysteresis electric machines with high temperature superconducting rotor
[Show abstract] [Hide abstract]
ABSTRACT: The results of theoretical and experimental research of electrodynamic process and hysteresis phenomenon into the bulk high temperature superconductors are presented with taking into co¬nsideration of material structure and polarization shape of alternative magnetic field in the machine air gap. The high temperature superconducting hysteresis machine performances computation results are expounded. Testing performances of experimental hysteresis motor are obtained. The comparative analysis of the hysteresis motor performances with traditional and high temperature superconducting rotors are carried out. 
Article: Cryoturbogenerator toroidal armature
[Show abstract] [Hide abstract]
ABSTRACT: Problems of inductance calculations of advanced highvoltage toroidal armature windings made in the form of racetrack modules are discussed. It is known that a combined external screen consisting of a coaxial steel laminated cylinder and an aluminium conductive cylinder is optimal according to weight curves. Thus, variants of a ferromagnetic core with additional screening shells and their influence on the inductance of a toroidal winding located on it are discussed. It is concluded that the toroidal winding with twosided electromagnetic screening provides characteristics which are similar to those for a generator with a drum winding of the armature
Publication Stats
227  Citations  
17.71  Total Impact Points  
Top Journals
Institutions

19922006

Moscow Aviation Institute
Moskva, Moscow, Russia


2002

Moscow State Technical University of Civil Aviation
Moskva, Moscow, Russia
