Читать книгу Introduction to Energy, Renewable Energy and Electrical Engineering - Ewald F. Fuchs - Страница 22

ffield, frequency(mechanical) force vectorFfarad, unit of capacitance, energy functional for finite element method, feedbackℱmagnetomotive forceattraction force due to magnetic fields of two magnetsrepulsion force due to magnetic fields of two magnetsfeferrum (Latin for iron)FETfield‐effect transistorFDfinite differenceFEfinite elementFMfigure of meritFWflux weakeningf(t)periodic function of time tftfeetϕphase angle, power factor angleΦmagnetic field flux, useful flux, iron‐core fluxϕsphase angle of source voltage ϕIsphase angle of source current as a function of angular velocity or frequency ωΦ(t)magnetic flux as a function of timeϕ(ω)phase angle of phasor transfer function G(jω) as a function of angular velocity or frequency ωΦm(t)mutual/main flux as a function of timeΦfringingfringing magnetic fluxΦusefuluseful magnetic fluxΦ12mutual flux originating in winding 2 linking winding 1Φ21mutual flux originating in winding 1 linking winding 2Φ11total flux generated by coil 1Φ22total flux generated by coil 2Φleak1leakage flux linked with coil 1Φleak2leakage flux linked with coil 2Φ1total flux linked with coil 1Φ2total flux linked with coil 2ΦAflux in transformer AΦBflux in transformer BΦCflux in transformer CΦtotal = ΦA + ΦB + ΦCtotal flux in common limb of bank of three‐phase transformer consisting of three‐single phase transformers A, B, Cphase angle of secondary current referred to primary side