Theory and calculation of alternating current phenomena . mpedance, 1 If Co = at motor terminals, z = internal impedance of the motor;if eo = terminal voltage of the generator, z = total impedance of line andmotor; if eo = of generator, that is, generated in generatorarmature by its rotation through the magnetic field, z includes the generatorimpedance also. 316 ALTERNATING-CURRENT PHENOMENA form a triangle, that is, ei and e are components of eo, it is ( and 160), eo^ = ei^ + e- + 2 eei cos (d, e), (4) „2 — /, 2 — p2 />.2 — z).2 — /y2V2 hence, cos (d, e) = eo e
Theory and calculation of alternating current phenomena . mpedance, 1 If Co = at motor terminals, z = internal impedance of the motor;if eo = terminal voltage of the generator, z = total impedance of line andmotor; if eo = of generator, that is, generated in generatorarmature by its rotation through the magnetic field, z includes the generatorimpedance also. 316 ALTERNATING-CURRENT PHENOMENA form a triangle, that is, ei and e are components of eo, it is ( and 160), eo^ = ei^ + e- + 2 eei cos (d, e), (4) „2 — /, 2 — p2 />.2 — z).2 — /y2V2 hence, cos (d, e) = eo ei — er — z^-i2 ziei (5) 2 Pie since, however, by diagram, cos (ei, e) = cos (/, e — i, d) = cos (i, e) cos (/, ei) + sin (/, e) sin (/, Ci) (6) substitution of (2), (3) and (5) in (6) gives, after some trans-position, eo- — er — zH- — 2rp = 2 x\/i~ei^ — p, (7) the fundamental equation of the synchronous motor, relating im-pressed , ^o; counter , e^; current, i; power, p, and re-sistance, r; reactance, x; impedance,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectriccurrentsalte
