The minimum energetical principle in electric and magnetic circuits

Andrei, Horia; Spinei, F.

doi:10.1109/ecctd.2007.4529744

Cited by 11 publications

(1 citation statement)

References 10 publications

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“…So the easy magnetization direction appears in different parts of the magnetic circuit. This principle forces the magnetic flux to pass from one lamination to another, along the z axis, in order to satisfy the principle of energy minimization [10,11]. This particular circulation of magnetic flux has been confirmed by 3D Finite Element simulations [12].…”

Section: Principlementioning

confidence: 67%

Non-Segmented Grain Oriented Steel in Induction Machines

Cassoret¹,

Lopez²,

Brudny³

et al. 2014

PIER C

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Abstract-This paper presents a technique which improves energy efficiency of AC rotating machines by using Grain Oriented (GO) steel at stator core instead of Non Oriented (NO) steel. The losses of GO steel are lower than the NO ones, but only when the magnetic flux circulates along the rolling direction; consequently it is rarely used in AC machines where the magnetic flux rotates. By stacking many shifted GO laminations of AC machine stator, the flux pass from one lamination to another, and the core losses are reduced. A lot of experimentations have been done with unidirectional field, rotating field and with real induction machines. They show important improvements with GO shifted steel. The efficiency difference between a classical 10 kW induction machine and a modified machine with GO stator is more than 2 points. Moreover, the no-load current, and so the reactive power are smaller. This technique creates environmental and financial gains.

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Section: Principlementioning

confidence: 67%