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dc.contributor.authorIdemne, Vitini Edhard O.
dc.contributor.authorAlguidano, Ramon A. Jr.
dc.contributor.authorJava, Alberto A.
dc.contributor.authorArmadillo, Ruben M.
dc.contributor.authorLagos, Gelvie C.
dc.contributor.authorNava, Babylou G.
dc.contributor.authorSacramento, Yeisel S.
dc.contributor.authorAcanto, Caesar Rico S.
dc.date.accessioned2021-05-10T01:18:00Z
dc.date.available2021-05-10T01:18:00Z
dc.date.issued2014-11
dc.identifier.citationIdemne, V. E. O. , Alguidano, R. A. , Jr., Java, A. A. , Armadillo, R. M. , Lagos, G. C. , Nava, B. G. , ... & Acanto, C. R. S. (2014). Level of harmonics produced by the variable frequency drive controller used in the induction type water pump motor of Central Philippine University (Research report). Jaro, Iloilo City: University Research Center, Central Philippine University.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12852/825
dc.descriptionAbstract onlyen_US
dc.description.abstractThe determination of the level of harmonics produced by the variable frequency drive (VFD) controller used to control the induction-type water pump motor at the water pumping station of Central Philippine University (CPU) was focused specifically on the electrical noise or harmonic level generated by the controller in terms of its amplitude and frequency. The level of harmonic content was acceptable based on the IEEE Std 519- 1992 of no more than 5% with the use of the controller and its effects on electronics and electrical systems connected in the same pick off point. It was also determined whether the system would significantly improve motor performance. Lastly, it was determined whether the system would significantly reduce energy consumption. Based on the results of the tests, the harmonics of the supply voltage at no load was 2.25%. During the system operation where a five (5) Hp induction type motor load was controlled direct-on-line (DOL), the harmonics generated was about 2.10%. However, by using the controller, it was found out that there was an increase in the amplitude and the number of harmonics present in the system. The harmonics produced at the source terminal with controller was about 3.93 %, showing an increase of 1.83% compared to without the use of the controller. However, the increase is minimal because 3.93 % is within the acceptable limits of 5% for electronics circuits and systems. However, this is not acceptable for medical and other related highly sensitive instruments, which require a THD of not more than 3%. In contrast to this, the harmonics generated at the load terminal was about 8.42%, which was higher compared to the THD at the input terminal and was very much higher than the required allowable level. The controller produced a significant level of harmonics that could cause interference to nearby electronic appliances that are sensitive to electrical noise within very close proximity. Nevertheless, this noise or harmonic generated was not significantly induced at the source terminal. Furthermore, there was no reduction on the energy consumption with the use of the controller over the DOL control mode. In contrast, the use of the controller gave the following benefits: it eliminated the very high current surges and sudden high starting torque during the motor start up; balanced the motor supply between phases; and, caused an increase in the revolution-per minute (rpm) of the motor thereby improving the performance of the motor. The same controller could be put to good use with some of the other pump motors around the campus.en_US
dc.format.extentix, 38 leavesen_US
dc.language.isoenen_US
dc.subject.ddcGSL 620.0072 L576en_US
dc.subject.lcshHarmonics (Electric waves)en_US
dc.subject.lcshElectric power systemsen_US
dc.subject.lcshElectric poweren_US
dc.titleLevel of harmonics produced by the variable frequency drive controller used in the induction type water pump motor of Central Philippine Universityen_US
dc.typeTechnical Reporten_US
dcterms.accessRightsLimited public accessen_US
dc.description.bibliographicalreferencesIncludes bibliographical referencesen_US
local.subjectHarmonicsen_US
local.subjectVariable frequency drive controlleren_US
local.subjectWater pump motoren_US
local.subjectElectrical supplyen_US
local.relation.associatedcontenthttps://repository.cpu.edu.ph/handle/20.500.12852/21 Full paper published in Scientia et Fidesen


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