New techniques to deal with the problem of excessive neutral currents in buildings containing large numbers of computers and other nonlinear loads /
and unbalanced loading conditions is examined and appropriate
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | and unbalanced loading conditions is examined and appropriate beginning to effect the power quality of 208/120V three phase buildings is undertaken. The results of this survey along conductors. The first approach is a simple passive filtering current harmonics and drastically improves the overvall currents away from the distribution transformer and back to currents flowing in the distribution systems neutrals. design examples are provided. E-core transformer as the passive approach. In addition to efficiency. In order to determine how prolific the problem of excessive triplen harmonics is a survey of Texas A&M office experimental results of the filter operation is also facilities and factories that employ large numbers of these four wire distribution systems. Office buildings, medical harmonic currents is tied to wiring failure, transformer loading conditions and simulations as well as experimental nonlinear loads are experiencing excessive triplen harmonic of the active filter guarantees cancellation of neutral of this technique is observed under balanced and unbalanced overheating, and an overall decrease in distribution system presented and discussed. Filter operation under balanced Primarily third harmonic, the presence of these triplen results are completed in order to validate the design. The second approach is an active technique that employs the same switch PWM controlled active filter. The closed loop control system performance by eliminating the possibility of technique which directs any excessive triplen harmonic The increased use of computers and other nonlinear loads is the load. This technique employs an E-core shell type the transformer, the active approach also employs a two This thesis then proposes two new techniques to help deal transformer as the primary filtering device. The efficiency transformer overheating due harmonics. Simulations and with extensive triplen harmonic currents in neutral with some typical current and voltage waveforms is presented. |
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| Item Description: | "Major subject: Electrical Engineering". Vita. |
| Physical Description: | xiii, 130 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |