Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: pulsacja momentu elektromagnetycznego

Sortuj według:

Ogranicz wyniki do:

Wpływ skosu stojana na redukcję pulsacji momentu elektromagnetycznego w bezszczotkowym silniku prądu stałego

Młot A., Łukaniszyn M., Korkosz M.

Maszyny Elektryczne : zeszyty problemowe

2010

Nr 88

41-45

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.

Analiza pulsacji momentu elektromagnetycznego w bezszczotkowym silniku prądu stałego z zastosowaniem skośnych magnesów

Korkosz M., Młot A.

Maszyny Elektryczne : zeszyty problemowe

2010

Nr 88

47-51

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.

Konstrukcyjne metody ograniczania pulsacji momentu elektromagnetycznego w bezszczotkowym silniku prądu stałego z magnesami trwałymi

Młot A.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

2007

Vol. 322, z. 59

27-28

In the last two decades, permanent-magnet brushless DC motors have been rapidly developed and widely used in various small-size machines. The maximization of the average torque and minimization of the ripple-cogging torque are the most challenging problems in the design and performance of electrical machines. This paper has addressed to the problem of cogging torque reduction.