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Tytuł:
Influence of harmonic voltage coupling on torque ripple of permanent magnet synchronous motor
Autorzy:
Geng, Shengtao
Zhang, Yong
Qiu, Hongbo
Yang, Cunxiang
Yi, Ran
Powiązania:
https://bibliotekanauki.pl/articles/140572.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PMSM
harmonic voltage coupling
torque ripple
inverter
Opis:
The permanent magnet synchronous motor (PMSM) driven by an inverter is widely used in the industrial field, but the inverter has a significant impact on the operational stability of the PMSM. The torque ripple of the PMSM is directly affected by the coupling of multiple harmonic voltages in the motor windings. In order to analyze its influence, a water-cooled PMSM with 20 kW 2000 r/min is taken as an example to establish the finite element model of the prototype, and the correctness of the model is verified by experiments. Firstly, based on the finite element method, the electromagnetic field of the PMSM is numerically solved in different operating states, and the performance parameters of the PMSM are obtained. Based on these parameters, the influence of the harmonic voltage amplitude on the torque ripple is studied, and the influence law is obtained. Secondly, combined with the decoupling analysis method, the influence of harmonic voltage coupling on the torque ripple is compared and analyzed, and the variation law of harmonic voltage coupling on the torque ripple is obtained. In addition, the influence of different harmonic voltage coupling on the average torque of the PMSM is studied, and the influence degree of different harmonic voltage amplitude on the torque fluctuation is determined. The conclusion of this paper provides reliable theoretical guidance for improving motor performance.
Źródło:
Archives of Electrical Engineering; 2019, 68, 2; 399-410
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Torque ripple calculation of two-phase im supplied by three-leg VSI inverter
Autorzy:
Záskalický, P.
Powiązania:
https://bibliotekanauki.pl/articles/1199352.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
two-phase motor
torque ripple
mathematical model
space phasor
silnik dwufazowy
moment obrotowy
model matematyczny
Opis:
The proposed paper deals with steady state estimation of a electromagnetic torque ripples and a current waveform of a two-phase induction motor (IM), which is supplied by an three-leg voltage source IGBT bridge connected inverter (VSI). The complex Fourier series analysis of the inverter’s output voltage was made, to obtain an analytical formula of supply voltage waveform. The space phasor theory has been applied to the two-phase induction machine model to obtain electromagnetic torque and supply current waveforms for various operation states.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2017, 3, 115; 13-17
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on torque ripple suppression of brushless DC motor based on PWM modulation
Autorzy:
Daode, Zhang
Wei, Lingkang
Hu, Xinyu
Zhang, Chupeng
Li, Xuesheng
Powiązania:
https://bibliotekanauki.pl/articles/141390.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC brushless motor
electric propulsion
fuzzy PID control
torque ripple
PWM_ON_PWM modulation
Opis:
Brushless DC motors are often used as the power sources for modern ship electric propulsion systems. Due to the electromagnetic torque ripple of the motor, the traditional control method reduces the drive performance of the motor under load changes. Aiming at the problem of the torque ripple of the DC brushless motor during a noncommutation period, this paper analysis the reasons for the torque ripple caused by pulsewidth modulation (PWM), and proposes a PWM_ON_PWM method to suppress the torque ripple of the DC brushless motor. Based on the mathematical model of a DC brushless motor, this method adopts a double closed-loop control method based on fuzzy control to suppress the torque ripple of the DC brushless motor. The fuzzy control technology is integrated into the parameter tuning process of the proportional–integral–derivative (PID) controller to effectively improve the stability of the motor control system. Under the Matlab/Simulink platform, the response performance of different PID control methods and the torque characteristics of different PWM modulation methods are simulated and compared. The results show that the fuzzy adaptive PID control method has good dynamic response performance. It is verified that the PWM_ON_PWM modulation method can effectively suppress the torque ripple of the motor during non-commutation period, improve the stability of the double closed-loop control system and meet the driving performance of the motor under different load conditions.
Źródło:
Archives of Electrical Engineering; 2019, 68, 4; 843-858
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Torque ripple reduction in BLDC motor based ona PWM technique for open-end winding
Autorzy:
Baszyński, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1841368.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
BLDC motor
open-end winding
PWM technique
unipolar modulation
Opis:
The article presents a modulation method for BLDC motors with unconnected windings. This method uses two full bridges (or three 12-switch H-bridges). The useof the described modulation enables reducing the motor current variable and increasing (fourfold in relation to the switching frequency) the motor current ripple frequency. Themost important benefit of using a 12-switch inverter is the twofold reduction of the dc-linkvoltage while maintaining the rated rpm (voltage reduction in comparison to a typical supplymethod). A voltage reduction causes a reduction in losses on semi-conductor elements. Thearticle also demonstrates that the proposed modulation technique significantly shortens thetime of current commutation between windings.
Źródło:
Archives of Electrical Engineering; 2021, 70, 1; 5-23
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cogging torque and torque ripple analysis of permanent magnet flux-switching machine having two stators
Autorzy:
Awah, Chukwuemeka Chijioke
Okoro, Ogbonnaya Inya
Chikuni, Edward
Powiązania:
https://bibliotekanauki.pl/articles/140414.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cogging torque
torque ripple
separate stators
unbalanced magnetic force
Opis:
The analysis of cogging torque, torque ripple and total harmonic distortion of a permanent magnet (PM) flux-switching machine having separate excitation stators is presented in this study. Further, the effect of unbalanced magnetic force (UMF) on the rotor of this machine is also investigated. A comparison of the analysed machine having different rotor pole configurations is also given. The analysis shows that the largest cogging torque, torque ripple as well as total harmonic distortion (THD) are obtained in the four-rotor-pole machine while the least of THD and torque ripple effects is seen in the thirteen-rotor-pole machine. Furthermore, the evaluation of the radial magnetic force of the machines having an odd number of rotor poles shows that the investigated machine having a five-rotor-pole number exhibits the highest value of UMF, while the smallest amount of UMF is obtained in an eleven-rotor-pole machine. Similarly, it is observed that the machines having an even number of rotor poles exhibit a negligible amount of UMF compared to the ones of the odd number of rotor poles.
Źródło:
Archives of Electrical Engineering; 2019, 68, 1; 115-133
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Torque ripple calculation of a permanent magnet synchronous motor supplied by a three phase inverter with PWM
Autorzy:
Zaskalicky, P.
Powiązania:
https://bibliotekanauki.pl/articles/1372789.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik synchroniczny
magnes trwały
przekształtnik
synchronous motor
permanent magnet
inverter
Opis:
A steady-state analysis of a permanent magnet synchronous motor drive with a voltage-source inverter is presented. The torque-speed profile required of the drive is a constant torque region from zero to the base speed and a constant power region above base speed. A Fourier series approach is used to predict the line current waveform. Assuming the output inverter's voltage is controlled by a pulse-width notching. Suppose the notching frequency to be constant for all frequency of the fundamental squarewave and to be fixed on 500 Hz. The permanent magnet synchronous motor model is obtained from its analogy to the fixed-excited synchronous motor. From the induced voltage and line current waveforms the electromagnetic torque ripple waveform is calculated.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 81-86
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kompensacja tętnień momentu w napędzie bezpośrednim z silnikiem PMSM
Torque ripple compensation in the direct drive with PMSM
Autorzy:
Pajchrowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/377975.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
silnik PMSM
sztuczne sieci neuronowe
napęd bezpośredni
tętnienia prędkości obrotowej
silnik synchroniczny o magnesach trwałych
Opis:
W artykule omówiono zagadnienie tętnień prędkości obrotowej w napędzie bezpośrednim z silnikiem synchronicznym o magnesach trwałych. W pracy przedstawiono przyczynę powstawania nierównomierności prędkości obrotowej, jakim jest pasożytniczy moment tętniący. Ma to istotne znaczenie w napędach obrabiarek i robotów, ponieważ pomimo małej amplitudy tętnień prędkości obrotowej, pogarszają one pracę układu. Dlatego w tych układach napędowych dąży się do uzyskania gładkiego momentu elektromagnetycznego, a tym samym zmniejszenia nierównomierności prędkości obrotowej. W pracy w celu uzyskania gładkiego momentu elektromagnetycznego, a tym samym zmniejszenia tętnień prędkości obrotowej, wprowadzono kompensację, wykorzystując sztuczne sieci neuronowe.
This article presents the issue of speed ripple in the direct drive synchronous motor with permanent magnets. The paper presents the cause of ripple speed which is torque ripple. This is important in the drive machine tools and robots, because it reduces the accuracy of the drive, despite the small amplitude of this torque. Therefore, these motion drives we want to smooth the electromagnetic torque, because they decrease the speed ripple. In the paper to achieve a smooth torque and reducing speed ripple, compensation was introduced, using artificial neural networks.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2012, 72; 93-100
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect torque observer-based sensor-less efficient control of bearingless switched reluctance motor using global sliding mode and square currents control method
Autorzy:
Rao, Pulivarthi Nageswara
Devarapalli, Ramesh
Marquez, Fausto Pedro Garcia
Kumar, G. V. Nagesh
Mohammadi-Ivatloo, Behnam
Powiązania:
https://bibliotekanauki.pl/articles/1409027.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bearingless
global sliding mode
efficient: maintenance
safety
torque ripple
Opis:
The Bearingless Switched Reluctance Motor (BSRM) is a new technology motor, which overcomes the problems of maintenances required associated with mechanical contacts and lubrication of rotor shaft effectively. In addition, it also improves the output power developed and rated speed. Hence, the BSRM can achieve high output power and super high speed with less size and cost. It has a considerable ripple in the net-torque due to its critical non-linearity and the salient pole structures of both stator and rotor poles. The resultant torque ripple, especially in these motors, causes the more vibrations and acoustic noises will affects the levitated rotor safety also. Practically at high-speed operations, the accurate measurement of the rotor position is complicated for conventional mechanical sensors. A new square currents control with global sliding mode control based sensorless torque observer is proposed to minimize the torque ripple and achieve a smooth, robust operation without using any mechanical sensors. The proposed controller is designed based on the error between the reference and measured torque values. The sliding mode torque observer measures the torque from the actual phase voltages, currents, and look-up tables. The simulation model has been modelled to validate the proposed methodology. From the simulation outputs, it is clear that the reduction of torque ripple by the proposed method shows improved than the conventional sliding mode controller. The overall system is more robust to the external disturbances, and it also gets efficient torque profile.
Źródło:
Archives of Control Sciences; 2021, 31, 1; 53-80
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza pulsacji momentu elektromagnetyczego w bezszczotkowym silniku prądu stałego z zastosowaniem skośnych magnesów
Torque ripple analysis in brushless DC motor with skewed magnets
Autorzy:
Korkosz, M.
Młot, A.
Powiązania:
https://bibliotekanauki.pl/articles/1372785.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
moment elektromagnetyczny
pulsacja momentu elektromagnetycznego
moment zaczepowy
silnik bezszczotkowy prądu stałego
maszyna elektryczna
Opis:
The paper examine the prediction of cogging torque and electromagnetic torque in a brushless dc motor with a skewed magnet structure. The skew can readily be accounted for in a 3-D finite element (FE) model. This requires creation of a three-dimensional model with a fine mesh. I.e. a more workable alternative is to use two-dimensional multi-slice FE modeling, which comprises several cross-sections along the machine's shaft, so that each slice is a 2-D magnetic field problem. Additionally the influence of a segmented magnet rotor on the electromagnetic and cogging torque is investigated. In this case three-dimensional computations are used. The multi-slice FE model with skewed magnets and a segmented magnet rotor are used to compute cogging torque by the virtual work method. The FE simulations have been carried out with a multi-slice model comprising 5 slices and with a segmented magnet rotor comprising 2-3 segments. Using optimal magnet skew angle for a multi-slice model it has been shown that cogging torque can be reduced to 95% compared to a prototype (un-skewed motor) with the same average torque.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 47-51
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multibody dynamics model of the cycloidal gearbox, implemented in fortran for analysis of dynamic parameters influenced by the backlash as a design tolerance
Autorzy:
Król, Roman
Król, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/2204615.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
cycloidal gearbox
backlash
contact modeling
multibody dynamics
output torque ripple
gearbox efficiency
Opis:
In this study, dynamical parameters of the cycloidal gearbox working at the constant angular velocity of the input shaft were investigated in the multibody dynamics 2D model implemented in the Fortran programming language. Time courses of input and output torques and forces acting on the internal and external sleeves have been shown as a function of the contact modelling parameters and backlash. The analysis results in the model implemented in Fortran were compared with the results in the 3D model designed using MSC Adams software. The values of contact forces are similar in both models. However, in the time courses obtained in MSC Adams there are numerical singularities in the form of peaks reaching 500 N for the forces at external sleeves and 400 N for the forces acting at internal sleeves, whereas in the Fortran model, there are fewer singularities and the maximum values of contact forces at internal and external sleeves do not exceed 200 N. The contact damping and discretisation level (the number of discrete contact points on the cycloidal wheels) significantly affect the accuracy of the results. The accuracy of computations improves when contact damping and discretisation are high. The disadvantage of the high discretization is the extended analysis time. High backlash values lead to a rise in contact forces and a decrease in the force acting time. The model implemented in Fortran gives a fast solution and performs well in the gearbox optimisation process. A reduction of cycloidal wheel discretisation to 600 points, which still allows satisfactory analysis, could reduce the solution time to 4 min, corresponding to an analysis time of 0.6 s with an angular velocity of the input shaft of 52.34 rad/s (500 RPM).
Źródło:
Acta Mechanica et Automatica; 2023, 17, 2; 272--280
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electromagnetic torque ripple diminution of a fivephase asynchronous motor with one phase open circuit fault
Redukcja tętnień momentu elektromagnetycznego pięciofazowego silnika asynchronicznego przy jednofazowej utracie mocy
Autorzy:
Záskalický, Pavel
Kaňuch, Ján
Powiązania:
https://bibliotekanauki.pl/articles/2142547.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
five-phase induction machine
torque ripple
pentagon connection
one phase fault
four-phase operation
maszyna indukcyjna pięciofazowa
tętnienie momentu obrotowego
połączenie pięciokątne
uszkodzenie jednofazowe
praca czterofazowa
Opis:
The presented paper deals with the five-phase induction motor (IM) having pentagon connected stator winding, which is working under one phase supply failure. Computation of the motor electromagnetic quantities was made using the space vector theory in the complex plane. Analysis is done assuming, the motor is supplied by a pulse width modulation (PWM) controlled inverter with sufficiently high modulation frequency. Only the first stator voltage harmonics is taken into consideration. On the base of measured IM parameters, trajectories of stator and rotor current space vectors were investigated. On their basis, the motor electromagnetic torque ripple waveform for failure supply mode is derived. Finally a possibility to reduce torque ripple in failure state is shown.
W artykule opisano pięciofazowy silnik indukcyjny (SI) o pięciokątnym uzwojeniu stojana, pracujący przy jednofazowym zaniku zasilania. Obliczenia wielkości elektromagnetycznych silnika przeprowadzono z wykorzystaniem teorii wektorów przestrzennych na płaszczyźnie zespolonej. Analizę przeprowadzono przy założeniu, że silnik jest zasilany z falownika sterowanego modulacją szerokości impulsów (PWM) o odpowiednio wysokiej częstotliwości modulacji. Uwzględniono tylko pierwszą harmoniczną napięcia stojana. Na podstawie zmierzonych parametrów SI zbadano trajektorie wektorów przestrzeni prądów stojana i wirnika. Na ich podstawie wyznaczono przebieg tętnień momentu elektromagnetycznego silnika dla trybu zasilania awaryjnego. Na zakończenie przedstawiono możliwość redukcji tętnień momentu w stanie awaryjnym.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2022, 3, 1 (127); 51--57
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimalizacja pulsacji momentu w silniku reluktancyjnym przełączalnym z zastosowaniem funkcji rozkładu momentu
Minimization of torque ripple in switched reluctance motor with using of torque sharing function
Autorzy:
Bogusz, P.
Korkosz, M.
Prokop, J.
Powiązania:
https://bibliotekanauki.pl/articles/1374137.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik reluktancyjny przełączalny
moment
pulsacja momentu
Opis:
Methods of description of torque sharing functions (TSF) are presented in this work. There are also shown mathematical and simulation models of the SRM. The simulation model is prepared using MATLAB/SIMULINK system. There is used card DS 1104 with digital signal processor (DSP) for laboratory stand. Results of simulation and experimental tests of the switched reluctance motors for two various torque sharing functions are presented and compared here. The first control function is a trapezoidal and second function is with cosine edge. Both functions are used for torque ripple minimization. Presented results of simulation and experimental tests are carried out for the steady states of motor operation. Conclusion is presented.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2008, 80; 57-62
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor
Autorzy:
Qiu, H.
Yu, W.
Li, Y.
Yang, C.
Powiązania:
https://bibliotekanauki.pl/articles/141535.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
air gap flux density
eddy current loss
harmonic
magnetic field decoupling
torque ripple
Opis:
At present, the drivers with different control methods are used in most of permanent magnet synchronous motors (PMSM). A current outputted by a driver contains a large number of harmonics that will cause the PMSM torque ripple, winding heating and rotor temperature rise too large and so on. In this paper, in order to determine the influence of the current harmonics on the motor performance, different harmonic currents were injected into the motor armature. Firstly, in order to study the influence of the current harmonic on the motor magnetic field, a novel decoupling method of the motor magnetic field was proposed. On this basis, the difference of harmonic content in an air gap magnetic field was studied, and the influence of a harmonic current on the air gap flux density was obtained. Secondly, by comparing the fluctuation of the motor torque in the fundamental and different harmonic currents, the influence of harmonic on a motor torque ripple was determined. Then, the influence of different current harmonics on the eddy current loss of the motor was compared and analyzed, and the influence of the drive harmonic on the eddy current loss was obtained. Finally, by using a finite element method (FEM), the motor temperature distribution with different harmonics was obtained.
Źródło:
Archives of Electrical Engineering; 2017, 66, 2; 295-312
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ skosu stojana na redukcję pulsacji momentu elektromagnetycznego w bezszczotkowym silniku prądu stałego
Cogging torque ripple reduction in brushless DC motor based on the stator skew
Autorzy:
Młot, A.
Łukaniszyn, M.
Korkosz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1372810.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik bezszczotkowy prądu stałego
silnik BLDC
maszyna elektryczna
moment elektromagnetyczny
pulsacja momentu elektromagnetycznego
moment zaczepowy
Opis:
Three-dimensional and two-dimensional multi-slice models based on the finite element method for the analysis of an electromagnetic torque of permanent magnet DC motor were applied. The cogging torque and electromagnetic torque versus the rotor angle of the motors with skewed and unskewed stator core were calculated.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 41-45
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ograniczanie pulsacji momentu elektromagnetyczego w bezszczotkowym silniku prądu stałego o skośnych magnesach
Torque ripple reduction by using multi-slice Fe modelling of brushless DC motor with skewed magnets
Autorzy:
Korkosz, M.
Młot, A.
Powiązania:
https://bibliotekanauki.pl/articles/1373199.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik bezszczotkowy prądu stałego
maszyna elektryczna
silnik BLDC
moment elektromagnetyczny
pulsacja momentu
Opis:
The intention of this paper is to look at multi-slice two-dimensional finite element modeling of a brushless DC motor with and without magnet skew. The results obtained are compared with experimental measurements on a typical machine without skew structure of the magnet. A standard approach to reducing cogging torque is to skew the magnet structure with respect to the rotor. Alternatively, the stator core can be skewed as well. This paper will consider the case of magnet skew only. From the finite element analysis (FEA) results, it shows that the brushless DC motor with 10° magnet skew angle with 5 slices had better performance than the motor with different values of skew angle. Additionally the difference between a physical machine with un-skewed magnets and a model of skewed magnet machine are shown.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 86; 105-108
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł

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