α L = L θ − L ref L ref ( θ− θ ref ) MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiabeg7aHnaaBaaaleaacaWGmbaabeaakiabg2da9maalaaabaGaamitamaaBaaaleaacqaH4oqCaeqaaOGaeyOeI0IaamitamaaBaaaleaacaqGYbGaaeyzaiaabAgaaeqaaaGcbaGaamitamaaBaaaleaacaqGYbGaaeyzaiaabAgaaeqaaOWaaeWaaeaacqaH4oqCcqGHsislcqaH4oqCdaWgaaWcbaGaaeOCaiaabwgacaqGMbaabeaaaOGaayjkaiaawMcaaaaaaaa@4D2C@
where Lθ and Lref are the inductances at temperatures θ and θref respectively