Читать книгу Introduction to Energy, Renewable Energy and Electrical Engineering - Ewald F. Fuchs - Страница 17

aarmatureaaverage term of Fourier analysisaℓ + 1/2area of quadrilateral (one irregular third) of triangular mesh= 3aℓ + 1/2area of triangular meshAappliances, forcing term, unit of ampere, cross section of magnet, ampereAℓvector potential at node ℓAovector potential at node oA3constantAccross section of iron coreAgcross section of air gap of an iron coreAvopen‐loop voltage gainA, B, Cphase sequence A, B, C of line A, line B, and line Cab(voltage) from a to bAB(voltage) from line A to line Ba, b, cphase sequence lines a, b, cACalternating currentancoefficient of Fourier term ancos nωtanphase a (a) to neutral (n)anrmsphase a (a) to neutral (n) root‐mean‐square (rms) valueAPPMapplied mathematicsASICapplication‐specific circuitAWGAmerican wire gaugealphafiring angle α of thyristor bridgeαdamping factor/coefficient, angle∠ − 90 ° = e−j90°angular displacement/shift of time function∠θvindicates phase shift voltage v(t) by either θv degrees (°) or θv radians (rad)