Analysis of harmonics current minimization on power distribution system using voltage phase shifting concept

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dc.contributor.authorSuriadi
dc.date.accessioned2014-11-04T02:49:53Z
dc.date.available2014-11-04T02:49:53Z
dc.date.issued2007
dc.descriptionMasteren_US
dc.description.abstractNon linear loads such as switch mode power supply and adjustable speed drive in three phase three wires power distribution system can causes line current system distorted. The non linear loads on three phases three wires power distribution system were produced dominantly 5-th and 7-th order harmonic currents. Increasing of harmonics current on electric power distribution system leads to degradation of system performance. To reducing the harmonics current on power distribution system should be minimized the 5-th and 7-th order harmonics current components. The minimization process of harmonic current is accomplished by voltage phase angle shifting on the two branches of non-linear load system, where the different phase angle between both of branches should be300 . Because of 5-th order harmonic current component is negative sequence and 7-th order harmonic current component is positive sequence, therefore these harmonic current components on the line system are opposite each other. Base on this concept, the phase shifter designing to harmonic minimization is “Double Symmetric Zig-zag Autotransformer”. The experimentation results for harmonic current minimization in three phase three wires power distribution system using this voltage phase angle shifting concept. It shows that the total current harmonic distortion on the line current system can be reduced from 30.03 % become 10.2 %. This value is fulfill the IEEE standard 519-1992 recommended, where the IEEE standard 519-1992 allows the maximum limits for total current harmonic distortion containing in power distribution system is bellow than 20 %. The advantage of this concept is simply and practice, because it is only required electromagnetic circuit and does not require sensor and control and the electronic components. Beside this, The Double Symmetric Zig-zag Autotransformer harmonic reducer has low rating kVA, smaller size, low losses and higher efficiency.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/339
dc.language.isoenen_US
dc.subjectElectric and electronic engineeringen_US
dc.subjectPower distribution systemen_US
dc.subjectVoltage phase shiftingen_US
dc.titleAnalysis of harmonics current minimization on power distribution system using voltage phase shifting concepten_US
dc.typeThesisen_US
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