Читать книгу Introduction to Energy, Renewable Energy and Electrical Engineering - Ewald F. Fuchs - Страница 34

rrotorRradius, resistanceRaarmature resistance of DC machineRCresistor–capacitor networkℜreluctance, magnetic resistanceRccore‐loss resistance, resistance of iron coreRgresistance of air gap of iron coreℜgreluctance or magnetic resistance of air gap of iron coreℜcreluctance or magnetic resistance of iron coreRpresistance of primary windingRsresistance of secondary windingsecondary resistance referred to primary side of transformerRcloss (series) resistance of capacitorR1resistance of primary winding 1R2resistance of secondary winding 2Rlineper phase resistance of distribution/transmission lineRLCresistor–inductor–capacitor networkradradiansratratedReindicates real part of a complex numberRloadload resistanceRload1resistance of load 1Rload2resistance of load 2per phase resistance of delta‐connected loadper phase resistance of delta‐connected first loadper phase resistance of delta second connected loadper phase resistance of Y‐connected first loadper phase resistance of Y‐connected second loadRHSright‐hand siderinradius inside of round wireroutradius outside of round wirermsroot‐mean‐squarermsloadsubscript for root‐mean‐square value of a load quantity (e.g. voltage)rmssourceindicates root‐mean‐square value of a source quantity (e.g. voltage)rpmrevolutions per minuterpsrevolutions per second(R − jX)complex conjugate of (R + jX)(r, Φ, z)r coordinate, Φ coordinate, z coordinate