Читать книгу Introduction to Energy, Renewable Energy and Electrical Engineering - Ewald F. Fuchs - Страница 20

ddiode, developed, direct, differentiationDdrain terminal, diode, subscript for determinant D, symbol for denominator, iron stack depthD(jω)denominator of transfer functiondot (•)dot convention/markingdBdecibel: dB (decibel)=20log M(ω)DCdirect currentDFIGdoubly fed induction generatordiffdifferentialincremental (differential) length vectorincremental (differential) surface vectordttime increment/differentialdVdifferential volumeDOEUS Department of Energydryerclothes dryer$dollar symbolΔthree‐phase winding connected in delta/Δ/triangle, delta/deviation/incremental changeΔTtorque differenceΔ‐Δ or Δ/Δprimary and secondary windings of three‐phase transformer are connected in deltaΔ‐Y or Δ/Yprimary winding of three‐phase transformer is connected in delta and secondary winding in wye