000 02602nam a2200241 a 4500
001 vtls000040407
003 KUKTEM
005 20251114204456.0
008 090715t2009 my ao f m 000 0 eng d
020 _aTHE0006802(Local)
039 9 _a201905291142
_bamirul
_c201107132243
_dVLOAD
_c200908141648
_dVLOAD
_c200908141628
_dVLOAD
_y200907151731
_zkam
040 _aUMP
090 _aTK3091 .I89 2009 rs Bc.
100 0 _aMuhamad Iszuan Hamdan
245 1 0 _aImpact of rotating machines on harmonic distortion in power distribution systems /
_cMuhamad Iszuan Bin Hamdan
246 3 _aImpact of rotating machines on harmonic distortion in power distribution systems
_h[electronic resource]
260 _aKuantan, Pahang :
_bUMP,
_c2009
300 _a65 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Electrical Engineering (Power Systems)) -- Universiti Malaysia Pahang - 2009
520 3 _aHarmonic cause of distortion of the voltages and current waveforms, which have adverse effects on electrical equipment. Harmonics are one of the major power quality concerns. The estimation of harmonics from nonlinear loads is the first step in a harmonic analysis and this may not be straight forward. Rotating machines are considered sources of harmonics because the windings are embedded in slots which are not perfectly sinusoidally distributed resulting in a distorted mmf. Nonsinusoidal voltage applied to electric machines may cause overheating, pulsating torques or noise. In additional to cross the line applications, adjustable speed drive motors are fed from inverter that can produce significant voltage distortion. In induction motor, they can overheat due to the effects of harmonic currents, depending on their frequency, because of additional rotating magnetic fields in the motor. Harmonic produce harmonic fluxes in motors. The harmonic torques tends to rotate motor at different harmonic synchronous speeds. It can produce high frequency currents in rotor circuits. The data which collect from the site project will be inserting into Visualation Basic, VB. The parameters that will be state are voltage, current, frequency, time and total harmonic distortion. The reading will be collect with the different speed of motor. It causes to show how the speeds of motor produce harmonic distortion. Then it wills using the different type of starter motor there are Direct-On-Line, Auto-Transformer and Star-Delta.
650 0 _aElectric power distribution
999 _aVIRTUA40
_c2677
_d2683
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*9992