Optimization and measurements of switched reluctance motors exploiting soft magnetic composite

Barba, Paolo Di; Mognaschi, Maria Evelina; Wiak, Sławomir; Przybylski, Marek; Ślusarek, B.

doi:10.3233/jae-182317

Cited by 16 publications

(6 citation statements)

References 6 publications

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“…The torque was then calculated based on changes of inductance for an altering rotor position multiplied by 0.25 and the current in the second power. For the same current I = 2.5 A, the calculated maximum electromagnetic torque was equal to 0.53 N•m [12]. Here, the difference is equal to 11%.…”

Section: Numerical Analysis Of the Motormentioning

confidence: 84%

Archives of Electrical Engineering

Przybylski

2019

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Switched reluctance motors (SRMs) are still under development to maximise their already proven usefulness. A magnetic circuit of the SRM can be made of soft magnetic composites (SMCs). The SMCs are composed of iron powder with dielectric and have a lot of advantages in comparison to commonly used electrical steel. The paper deals with the modelling and analysis of the SRM produced by Emerson Electric Co. for washing machines. Numerical calculations and modelling were done using the FEMM 4.2 program. Magnetic flux densities and magnetic flux lines were calculated, as well as electromagnetic torque and inductance for changing the position of a stator to a rotor. The obtained results were compared with other measurement results and are quite similar. The developed numerical model will be used for the project of a motor with an SMC magnetic circuit.

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Section: Numerical Analysis Of the Motormentioning

confidence: 84%

Archives of Electrical Engineering

Przybylski

2019

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“…The drive was loaded using an eddy current brake with permanent magnets. The motor was supplied from a 3-phase asymmetric bridge controller designed and developed by the Poznan University of Technology [29,30,37]. Torque was measured with a MW2006-3S torque meter with a MT-3Nm sensor produced by Roman Pomianowski Pracownia Elektroniki (Poznań, Poland).…”

Section: Methodology Of Srm Measurementsmentioning

confidence: 99%

Temperature and Torque Measurements of Switched Reluctance Actuator with Composite or Laminated Magnetic Cores

Przybylski

Ślusarek

Barba

et al. 2020

Sensors

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Soft magnetic composite (SMC) materials made of iron powder are more frequently used in construction of electric actuators and motors because of their advantages with respect to Fe–Si electric steel sheets and because they have almost no powder loss. The study deals with measurements of temperature and torque of a low-power rotary switched reluctance actuator, with reference to a commercial actuator and a prototype actuator characterized by stator and rotor cores made of soft magnetic composite materials. Further power loss analysis was also conducted. To assess the actuators, magnetization characteristics and iron loss vs. magnetic flux density at a given frequency were measured according to IEC standards. Results show that the actuator made of soft magnetic composites exhibits higher efficiency and a lower temperature rise of stator and windings in comparison with the commercial actuator.

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“…Therefore, SMC materials can be used at frequencies up to 100 kHz, and a cross-over point for core losses for it and silicon steel (3% silicon content) is between 200 Hz to 400 Hz -see specific losses vs. flux density and frequency characteristics shown in Fig. 5 [8]. Whereas the magnetic permeability of the composite is lower and therefore the apparatus design of the SMC needs to take account of the magnetization curve (see Fig.…”

Section: Soft Magnetic Composite -Somaloy 500mentioning

confidence: 99%

Analysis and experimental verification of dual star permanent magnet synchronous motor with rotor back iron made of soft magnetic composite

Danielczyk¹

2019

ELECTROTECHNICAL REVIEW

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with cooperation the Tele-and Radio Research Institute deals with finite element analysis of six-phase, dual star permanent magnet synchronous motor. To reduce eddy current losses in the rotor of the machine the rotor back iron segments have been made of soft magnetic composite (SMC). SMC are composites of iron powder particles separated with an electrically insulated layer. This technology has many advantages in relation to classical laminated core solutions; among other lower manufacturing costs due to simpler technology and reduced eddy current losses out of order times lower conductivity. The mathematical model of machine utilizes field circuit approach assuming planar symmetry of the machine. The magnetic properties of the applied SMC material have been introduced into the model basing on BH curves and unit losses vs. frequency characteristics measured at Tele-and Radio Research Institute. Accuracy of developed numerical model has been verified by measurements of the machine performance under normal and drive fault conditions tested on the elaborated research stand. Streszczenie. prezentowane badania, prowadzone na Politechnice Poznańskiej we współpracy z Instytutem Tele-i Radiotechnicznym dotyczą analizy i weryfikacji eksperymentalnej sześciofazowego silnika synchronicznego z magnesami stałymi. W celu ograniczenia strat związanych z występowaniem prądów wirowych w obwodzie magnetycznym wirnika maszyny jego segmenty wykonano z miękkiego kompozytu magnetycznego (SMC). W stosunku do powszechnie stosowanych rdzeni laminowanych technologia proszkowych materiałów SMC posiada wiele zalet. Między innymi dzięki znacznie większej rezystywności materiały te pozwalają ograniczyć straty wiroprądowe w rdzeniu, a dzięki uproszczeniu technologii wytwarzania możliwe jest ograniczenie kosztów produkcji. W polowo obwodowym modelu maszyny założono symetrię płaszczyznową obwodu magnetycznego maszyny oraz uwzględniono magnetyczne właściwości zastosowanego materiału SMC na podstawie krzywych BH oraz charakterystyk stratności zmierzonych w Instytucie Tele-i Radiotechnicznym. Dokładność opracowanego modelu numerycznego została zweryfikowana poprzez pomiary wybranych parametrów testowanej maszyny przeprowadzone na opracowanym stanowisku badawczym. Analiza i weryfikacja eksperymentalna sześciofazowego silnika synchronicznego z magnesami stałymi

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Optimization and measurements of switched reluctance motors exploiting soft magnetic composite

Cited by 16 publications

References 6 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

Temperature and Torque Measurements of Switched Reluctance Actuator with Composite or Laminated Magnetic Cores

Analysis and experimental verification of dual star permanent magnet synchronous motor with rotor back iron made of soft magnetic composite

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