Ewald F. Fuchs - Introduction to Energy, Renewable Energy and Electrical Engineering

Hheating, magnetic field intensity/strength, henry unit symbol for inductanceHVhigh voltageHPhigh passhphorsepower: 1 hp = 745.7 watts ≈ 746 W, or 1.3392 horsepower = 1000 watts. magnetic field intensity vector magnitude of magnetic field intensity vectorHcmagnetic field intensity in iron core vector of magnetic field intensity/strength in air gap magnetic field intensity/strength vector of iron coreHcore= magnitude of magnetic field intensity vector within iron coreHg= magnitude of magnetic field intensity/strength vector within air gap (g)Hrmagnetic field intensity/strength r‐component of (r, Φ, z) polar systemHΦmagnetic field intensity/strength Φ‐component of (r, Φ, z) polar systemHΦ_inmagnetic field intensity component in Φ direction inside of round wire magnetic field intensity vector in Φ direction inside of round wire HΦ_outmagnetic field intensity component in Φ direction outside of round wireHzmagnetic field intensity/strength z‐component of (r, Φ, z) polar systemHxx‐component of magnetic field intensity vector homhomogeneousHVDChigh‐voltage DC lineHTEhigh‐temperature electrolysisH2Ochemical symbol for waterHzhertz, cycles per 1 second

iunit directions of (i, j, k) rectangular system, current, integrationi+zero input current at positive terminal of operational amplifieri−zero input current at negative terminal of operational amplifierI, II, III, IVidentification of step functionICintegrated circuitINinverting configuration of operational amplifieria(t)armature current as a function of time reference/nominal/rated (*) value of armature (a) currentip(t)primary current as a function of time phasor source current as a function of angular velocity or frequency primary current through winding/phase A primary current through winding/phase B primary current through winding/phase C secondary current through winding/phase a secondary current through winding/phase b secondary current through winding/phase c primary phasor current magnitude of phasor current in primary winding core‐loss phasor current excitation phasor current magnetizing phasor current secondary phasor current referred to primary side of transformer phasor load current of single‐phase transformer referred to secondary side phasor load current of single‐phase transformer referred to primary sideis(t)secondary current as a function of timeIinverter, integral, inductance, current, DC current phasor current of secondary winding 2 phasor conjugate (*) current of secondary circuit phasor source current of primary circuit secondary phasor current of transformer referred to primary side magnitude of secondary phasor current of transformer referred to primary side phasor capacitor current of transformer referred to primary side phasor current through core‐loss resistance Rc of transformer phasor input current of primary circuit phasor output current of secondary circuiti(t)current as a function of timei1(t)primary current as a function of time functioni2(t)secondary current as a function of time functioni2current in secondary winding 2i1current in primary winding 1 phasor current in primary winding 1IDCDC currentIinDC current inside of round wire up to radius rinIocurrent i(t) at t = 0 component current of component current of ∞symbol for infinityICEinternal combustion engineininputIMinduction or asynchronous machineImindicates imaginary part of a complex number absolute value or magnitude of phasor IMamplitude of time function i(t)IMinduction motor/machineIGBTinsulated‐gate bipolar transistorincandescentEdison‐type light bulb complex conjugate of