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Speed control of a single phase induction motor using variable frequency/Koay Thean Siang

Speed control of a single phase induction motor using variable frequency_Koay Thean Siang_E3_2006_NI
Projek ini bertujuan untuk merekabentuk satu litar penyongsang satu fasa untuk mengawal kelajuan motor aruhan satu fasa. Fungsi penyongsang adalah untuk menukar voltan arus terus (AT) kepada voltan arus ulang-alik (AU) dengan frekuensi boleh-ubah. PSIM, salah satu perisian komputer telah digunakan untuk menguji litar penyongsang yang diguna. Keputusan daripada simulasi adalah seperti yang dijangkakan. Kelajuan motor aruhan ini boleh dikawal dengan mengubah frekuansi bekalan. Untuk merekabentuk penyongsang satu fasa, empat biji MOSFET kuasa digunakan. MOSFET kuasa hanya akan mengalir jika pin get menerima isyarat. Oleh itu, satu litar pengawal pemodulatan lebar denyut diperlukan untuk menghasilkan isyarat denyutan untuk memandu MOSFET kuasa. Frekuensi bagi isyarat denyutan ini boleh dikawal dengan mengubah nilai rintangan dalam litar tersebut. Keluaran voltan pengyongsasng disambung kepada pengubah agihan untuk menaikkan voltan yang dapat menjalankan motor. Bentuk gelombang bagi keluaran penyongsang adalah sasma dengan keputusan simulasi. ______________________________________________________________________________________ The objective of this project is to design a single-phase inverter to control the speed of single-phase induction motor. The speed of the induction motor can be controlled by changing the frequency of the input supply. The function of an inverter is to change a direct current (DC) input to a symmetric alternating current (AC) output voltage of desired magnitude and frequency. A computer simulation tool called PSIM is used to simulate and examine whether the inverter circuit is a working circuit. The results of the simulation are same as expected. The inverter is constructed with four power MOSFETs and the MOSFET will only conduct when it receives a certain voltage at the gate. In this project, the pulse width modulation (PWM) controller board is used to generate continuous pulses for driving the MOSFETs. The frequency of the output pulses can be changed by varying the value of the potentiometer in the board. The output voltage of the inverter is connected to a transformer to step up to a suitable voltage that can run the motor. The output waveforms of the inverter that has been constructed are almost the same with the simulation result
Contributor(s):
Koay Thean Siang - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
inverter; induction motor; magnitude
First presented to the public:
5/1/2006
Original Publication Date:
4/19/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 370
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-04-24 14:51:50.013
Submitter:
Nor Hayati Ismail

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