V/I Control Method and Its ANN Implementation for Maximizing Attainable Efficiency of Induction Motor

Razali, Ramdan (2012) V/I Control Method and Its ANN Implementation for Maximizing Attainable Efficiency of Induction Motor. PhD thesis, Multimedia University.

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Official URL: http://library.mmu.edu.my/diglib/onlinedb/dig_lib....

Abstract

In this thesis, a technique based on V/I maximum attainable efficiency method is proposed for operating an IM with V/f controller at maximum attainable efficiency at partial loads. The technique requires estimation of V/I reference value (V/I) corresponding to maximum attainable efficiency at a given load using IM equivalent circuit parameters. Analysis and theoretical validation of the technique has been carried out using IM equivalent circuit. Experiments were carried out in the laboratory using a PWM inverter fed fractional horsepower SCIM with a V/f controller (specially developed and fabricated) at a few selected loads at rated frequency. The supply voltage to the SCIM was varied for the selected loads and the corresponding V/I values were calculated by measuring V and I at stator terminals. The efficiency for various values of V/I were plotted for the selected loads. It has been found from the graphs that for a given load, the maximum attainable efficiency occurs at a value of V/I closer to the calculated (V/I)ref. The results thus validate the concept proposed.

Item Type: Thesis (PhD)
Additional Information: Call No.: TK2785 R36 2012
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Nurul Iqtiani Ahmad
Date Deposited: 16 Jun 2014 02:21
Last Modified: 16 Jun 2014 02:21
URI: http://shdl.mmu.edu.my/id/eprint/5582

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