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Tytuł:
Wpływ szerokości magnesu trwałego na właściwości prądnicy synchronicznej z magnesami trwałymi na powierzchni wirnika
The influence of magnets width angle on the performance of surface mounted permanent magnet generator
Autorzy:
Zawilak, T.
Gwoździewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1369626.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
magnes trwały
prądnica synchroniczna
Opis:
Influence of the permanent magnet width on the synchronous generator with permanent magnets on the rotor surface properties was investigated. Field-circuit synchronous generator model was applied in Maxwell ver. 14. Two types of stator winding connection was analysed. Higher harmonic analyses were investigated.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2012, 3, 96; 131-133
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pradnice synchroniczne z magnesami trwałymi umieszczonymi wewnątrz wirnika
Interior premanent magnet synchronous generators
Autorzy:
Król, E.
Rossa, R.
Powiązania:
https://bibliotekanauki.pl/articles/1374058.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
prądnica synchroniczna
magnes trwały
wirnik
Opis:
In the paper two kinds of permanent magnet synchronous generator constructions are compared. The first one is generator with the arc-segment permanent magnets mounted on the rotor surface (Surface Permanent Magnet - SPM construction). The second one is generator with the block-segment permanent magnets mounted inside the rotor's laminated core (Interior Permanent Magnet - IPM construction). The results of laboratory tests for both kinds of generators operating stand-alone are presented and discussed. It can be concluded from these test results and discussions, that IPM generator is characterized by a lower voltage variations and higher efficiency in the entire range of loads. It is also characterized by higher mechanical strength and higher reliability comparing to the SPM construction.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2008, 80; 159-162
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ warunków środowiskowych na starzenie magnesów trwałych Nd-Fe-B
Application properties of permanent magnets Nd-Fe-B
Autorzy:
Drak, M.
Dobrzański, L.A.
Powiązania:
https://bibliotekanauki.pl/articles/1374783.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
magnes trwały
starzenie
odporność korozyjna
Opis:
The paper presents results of corrosion wear of bonded and sintered hard magnetic materials Nd-Fe-B and magnets covered by protective polymer, lacquer and metal coatings. Corrosion tests were made in the water and in 5% NaCl solution environment. It was found that the bonded magnets with the polymer matrix demonstrate better corrosion resistance than the sintered magnets. Employment of the protective coatings on the Nd-Fe-B bonded magnets surfaces may feature the effective protection of the substrate material from the corrosive action of the aggressive agent. Analysis of the surface topography of the deposited protective coatings makes it possible to determine coating defects resulting from the action of the aggressive agent. The best protection from the corrosive environment is provided by the polymer coatings. Lower corrosion protection by protective coating was found in the case of sintered magnets. The corrosion damage process of magnets covered with the protective coatings starts in the coating failure location and is connected with the further damage proceeding both into the material and on its surface.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2006, 74; 135-140
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza pracy generatorowej maszyny elektrycznej z magnesami trwałymi
The analysis of the permanent magnets electric machine generator mode
Autorzy:
Bogusz, P.
Korkosz, M.
Mazurkiewicz, A.
Prokop, J.
Powiązania:
https://bibliotekanauki.pl/articles/1372596.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
magnes trwały
generator
Opis:
The paper presents the analysis of generator mode of an electric machine with permanent magnets. The simulation model which allows to analyze different types of generator modes was processed. This simulation model is based on calculating machine parameters using the finite elements method (FEM). Certain features of the machine which can work in the second zone of regulation as an autonomous generator were analyzed. On base of the simulation model external and regulating characteristics of the researched machines were indicated. Finally some conclusions were included.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 3, 91; 21-25
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silniki z magnesami trwałymi o dużej przeciążalności momentem
Permanent magnet synchronous motor with hight torque overload
Autorzy:
Król, E.
Rossa, R.
Powiązania:
https://bibliotekanauki.pl/articles/1373914.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik synchroniczny
silnik elektryczny
magnes trwały
Opis:
The different shapes of stator electrical sheets are compared and their influence on the motor parameters is discussed. Especially the influence on heat capacity and torque overload is discussed. The PMSMs designed basing on standard shapes of stator electrical sheets taken from 3-phase induction motors are characterized by lower manufacturing cost, but such motors are not optimized for high torque overload capability. To get the advantage of high torque overload and the best performance of PMSM, the stator and rotor sheets should be specially designed.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2009, 81; 27-31
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silniki trakcyjne z magnesami trwałymi – nowa jakość napędów elektrycznych
Permanent magnets motors - a new solution for electrical drives
Autorzy:
Bernatt, J.
Powiązania:
https://bibliotekanauki.pl/articles/1374758.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
napęd elektryczny
silnik trakcyjny
magnes trwały
Opis:
The paper deals with permanent magnets motors for traction application. In past years, in locomotives designed for mining applications DC motors of output 25/45 kW were used. Since 1990 such motors have not been manufactured, so the old motors have to be replaced by new ones. Due to usage of PM, designers increased the output of the motors to 33/60 kW. The motors were designed as motors with magnets mounted on the surface of the rotor. A method of field weakening was implemented into electronic converter supplying the motor to increase the rotation speed from 1500 up to 2250 rpm. A number of laboratory test were done. The paper presents results of the tests and shows the area of installation of PM motors. Komel Centre is ready to design and manufacture motors with PM for different application (rail traction, electric cars and vehicles, pumping systems etc).
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2006, 74; 11-17
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magneśnica z cewką skupioną do magnesowania magnesów trwałych
Magnetizer with the concentrated coil assigned to magnetize permanent magnets
Autorzy:
Pistelok, P.
Białas, A.
Powiązania:
https://bibliotekanauki.pl/articles/1372736.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
magneśnica
obwód elektromagnetyczny
magnesowanie
magnes trwały
Opis:
In the article, an electromagnetic circuit assigned to magnetize permanent magnets was presented. Design issues and possibilities of magnetizer were discussed and two computational models were shown. A schedule of the magnetic field strength was expressed in the air gap of magnetizer. An influence of the leakage inductance, magnetizing coil on magnetic field strength value, inside the permanent magnet was discussed. Computational temporary courses of voltage and current in the magnetizing coil, during the process of magnetizing were presented. Results of calculations and simulations were displayed. Possibilities of the presented electromagnetic circuit were discussed in the perspective of getting greater values of magnetic field strengths, inside the permanent magnet, during the magnetizing process.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 4, 92; 85-89
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie obwodów magnetycznych maszyn elektrycznych z magnesami trwałymi
Comparison of magnetic circuits of electrical machines with permanent magnets
Autorzy:
Cierzniewski, P.
Pałka, R.
Paplicki, P.
Wardach, M.
Powiązania:
https://bibliotekanauki.pl/articles/1372545.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
obwód magnetyczny
magnes trwały
Opis:
This paper presents results of simulation researches conducted on magnetic circuits of selected electrical machines excited by permanent magnets. The advantages of this type of machines are: high efficiency, relatively simple construction, smaller material consumption when compared to other machines, as well as lower production and exploitation costs. The examined magnetic circuits have the same stator, although they differ in the construction of the rotor, on which the permanent magnets are located. An identical number of magnetic poles and volume of electromotive force sources have been assumed for all of the models. The data, obtained through research carried out with the assumed average value of electromagnetic torque, magnetic flux density and theirs pulses, have been discussed. The conducted analysis indicated optimal design solutions for smaller oscillations and the maximum value of average electromagnetic torque.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 5, 93; 161-166
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody bezpośredniego chłodzenia uzwojenia w bezrdzeniowej maszynie dyskowej z magnesami trwałymi
Methods of winding direct cooling in coreless disk permanent magnet machine
Autorzy:
Szczypior, J.
Jakubowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1372898.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
magnes trwały
uzwojenie
chłodzenie
Opis:
Method of direct cooling of winding bar utilizing liquid medium contacting with side surface along whole bar length is described in the paper. Main advantage of that cooling method is avoiding necessity of increasing length of passive parts of bar and therefore decreasing losses in the winding. Besides that cooling method enables effective regulation of cooling intensity by changing medium speed in cooling duct. The method for calculation of thermal distribution along length of bar for given dimension of bar and cooling duct, current density and medium speed is presented. Also the solution of reverse problem in, which for known bar and duct dimension, current density and given maximum value of temperature, the medium speed in canal is calculated. The calculations results of maximum value of bar temperature for different length, current density and medium speed are presented. Also dependence of medium speed on bar length and current density for known maximum value of bar temperature is discussed.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 109-115
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Praca samotna prądnicy synchronicznej z magnesami trwałymi, zasilającej silnik asynchroniczny w różnych stanach obciażenia
Permanent magnet synchronous alternator supplying AC induction motors - possibilities of operation as micro network
Autorzy:
Gawron, S.
Graczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/1374781.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
prądnica synchroniczna
magnes trwały
silnik asynchroniczny
Opis:
Authors of articles have concentrated on correct manner of selecting in "few couple" highly energetic permanent magnets synchronous generator with asynchronous motor at different states of conditions of loads general working. Engine has to be included on exit clamps of generators directly. Work relied on assignment of parameter scheme electric asynchronous motor and parameter of scheme electric generator, to next connect in one scheme electric. It carry malingering of work of match in states established at different moments of loads of asynchronous motor and at different rotary speed principle of stability of magnetic flow approximately = U/f const. Stability of magnetic flow, because impose synchronous generator construction of machine supplying, i.e. synchronous generator with magnets (change of voltage in change of frequency -change speed rotary). Range of test execute, which have confirmed accepted employ methodics of procedure.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2006, 74; 141-145
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Próba wyznaczenia parametrów znamionowych bezszczotkowych silników synchronicznych wzbudzanych magnesami trwałymi
Attempt of rating determination of brushless permanent magnet synchronous motor
Autorzy:
Mrozek, A.
Powiązania:
https://bibliotekanauki.pl/articles/1374113.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik synchroniczny
silnik elektryczny
magnes trwały
Opis:
The paper presents the results of measurements of brushless permanent magnet synchronous motors (PMSM) and the methodology of the rating determination. The PMSM have two different rotor construction. The first one has a surface mounted block magnets, while the second has radial embedded magnets in the rotor yoke. All the PMSM motors are based on a stator from the small power asynchronous motor. The investigated motors are supplied by the sinusoidal voltage sources during the test. The characteristics of the armature current versus the load torque for the several values of supply voltages are measured. The characteristics of the armature current versus the supply voltage for the several values of the load torque are measured, as well. During the tests temperature in several points of motor were measured. The motor performances were determined in thermal steady state. The temperature distribution on the motor casing were measured by the thermal camera.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2008, 80; 217-222
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prądnica synchroniczna z magnesami trwałymi o podwójnym wirniku zwiększajaca częstotliwość generowanego napięcia
Two-stage permanent magnet synchronous generator increasing output voltage frequency
Autorzy:
Gawron, S.
Powiązania:
https://bibliotekanauki.pl/articles/1374076.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
prądnica synchroniczna
magnes trwały
maszyna synchroniczna
Opis:
This paper presents the construction of a model, two-stage low speed synchronous generator designed for producing energy from the renewable sources. Moreover, the computational methodology and the basic results of electromagnetic calculations of the two-stage low speed synchronous generator with permanent magnets are presented. On the basis of the calculations conducted, a physical model of the generator was made, on which the preliminary laboratory tests were carried out. There is also a comparative record sheet of the preliminary laboratory tests and the results of the theoretical calculations included in the paper.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2008, 80; 211-215
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obliczenia cieplne w bezrdzeniowej maszynie dyskowej z magnesami trwałymi o chłodzeniu bezpośrednim
Thermal calculations in coreless disk permanent magnet machine with direct cooling
Autorzy:
Szczypior, J.
Jakubowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1373359.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
obliczenia cieplne
magnes trwały
Opis:
Thermal calculations of electrical permanent magnet disc machine with coreless armature winding, with liquid cooling of winding bars sections is presented in the paper. Problems with heat emission concerning winding bar placed in technical vacuum are discussed. Thermal calculation is performed for single winding bar. Structure and parameters of thermal net bar and bar with radiator are discussed. To solve nonlinear system of equations, method of nodal potential is used. Results of calculations for different value of current density, different bar and radiator dimensions and different value of convection coefficient are presented.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2009, 83; 59-66
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja maszyny dyskowej z magnesami trwałymi i bezrdzeniowym twornikiem z uzwojeniem ewolwentowo-promienowym
Optimization of disk machine with permanent magnet and coreless armature with involutes-radial winding
Autorzy:
Szczypior, J.
Jakubowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1372516.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyna elektryczna
magnes trwały
twornik bezrdzeniowy
Opis:
In this paper, the construction of high speed disk machine with permanent magnet and coreless armature with involutes-radial winding was presented. Nominal, constructions and material parameters designing machine was defined. To solve magnetic circuit three-dimensional reluctant net method was used. Results of distribution of magnetic induction compare with results getting from finite element method. Method to calculations average and effective value of wire voltage in involutes-radial winding was presented. Thermal calculations for one winding bar was realized using substituted thermal net. Electromagnetic and thermal design calculations were formulated as an optimization problem. Economic criterion expressing cost effective material was assumed. Requirements imposed on design construction were formulated in the form of limitations optimization problem. To solve optimization task, ready procedure based on sequence square programming algorithm was used. Strategy of search of optimal construction was developed. Results of project calculations for different relation of material cost were presented.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2011, 5, 93; 113-118
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetyczna komora badawcza dedykowana do hodowli komórek
Magnetic chamber dedicated to research of the cell culture
Autorzy:
Gawron, S.
Glinka, M.
Wolnik, T.
Powiązania:
https://bibliotekanauki.pl/articles/1369545.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
magnetyczna komora badawcza
hodowla komórek
magnes trwały
Opis:
At present the most popular, and most commonly applied, permanent magnets are ferrite and neodymium magnets. Their broader and broader industrial use connected with the drop of the costs of their production is connected with the need to broaden the basic tests evaluating their influence upon the functions of living organisms. So far only few studies cited in the world's medical literature have been devoted to the problem of evaluating the activity of permanent magnetic fields onto cell cultures. The permanent magnets used in the studies had no descriptions of their characteristics nor previously prepared spatial models of distribution of the permanent magnetic field intensities. Our goal was an attempt to optimize these studies. We created computer simulations of 3D distribution of the intensities of the permanent magnetic field for several permanent magnets, which, as we assumed, could be used for tests with cell cultures. The next step was the construction of model circuits for several sizes of magnets on the basis of the spatial parameters of a standard plastic container used for growing cell cultures. We compared the assumptions of the intensity simulations with real measurements carried out on models of real circuits. Our research is to be developed in a proposal of a model for testing the impact of permanent magnetic fields on various factors of cell cultures in vitro. Our Assumption are based on the existing 3D simulations carried out for permanent magnets used in the production of electric engines. The calculations of the magnetic induction were carried out with the application of the 3D finite elements method. The results of the measurements were presented in a form of visualization of 3D distribution of the simulations and the real measurements. The measurement differences were statistically compared; no statistically significant differences in the computer simulations (on the basis of the producer's assumptions) and the real measurements were revealed. 3D simulations allow to select appropriate parameters of magnets and to provide design preparation of stations for testing the impact of permanent magnetic fields onto cell cultures.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2012, 4, 97; 11-16
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł

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