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Knowledge Center

Effect Of Motor Design Parameters On Cogging Torque - Part 1
Cogging torque is one of the major electromagnetic sources for motor noise. Reducing cogging torque results in a quieter motor.
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Factors Affecting Magnet Aging
Various factors like the permeance coefficient (PC) value, density and saturation of the magnet will affect magnet aging.
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Improvement in mechanical strength of bonded neo magnets
Increase in epoxy helps to increase ring crush strength while novolac epoxy can help to improve the crush strength and stress rupture strength at elevated temperatures relative to DGEBA epoxy.
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Latest Technical Developments

Salient features of the magnetizing fixture design and the evaluation on the effect of additional back iron during in-situ magnetization, the use of laminated back iron v/s solid back iron, conductor location and fixture slot shaping.
Permanent magnet synchronous motor drive using hybrid PI speed controller with inherent and noninherent switching functions.
Optimal use of higher-density bonded neodymium magnets is helpful in achieving weight and volume reduction in permanent magnet motors, resulting in raw material cost savings.
This material demonstrated good magnetic properties and saturation magnetization, at best ~50 emu/g. Mechanical properties of the compacts were good, and comparable to those of the polycrystalline Ni-Mn-Ga samples in compression.
This paper presents a manufacturing method called Combustion Driven Compaction (CDC) for the manufacture of isotropic bonded NdFeB magnets (bonded Neo). Magnets produced by the CDC method have density up to 6.5 g/cm3 which is 7-10% higher compared to commercially available bonded Neo magnets of the same shape.