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Soft starter for single phase induction motor

Soft starter for single phase induction motor / Mohamad Rozaidi Mohd Said
Pemula lembut adalah peranti elektrik di mana untuk mengurangkan arus masuk apabila motor aruhan mula beroperasi. Pemula lembut digunakan dalam banyak aplikasi seperti kompresor, alat peniup, kipas, pam, dan aplikasi lain. Apabila motor aruhan dihidupkan, tork permulaan yang tinggi diperlukan untuk motor aruhan untuk beroperasi. Permulaan yang tinggi ini akan memerlukan arus masuk yang tinggi. Oleh itu, sangat penting bagi motor induksi untuk melindungi motor daripada arus masuk yang boleh merosakkan motor induksi. Pemula lembut juga boleh mengurangkan kerugian kuasa yang berlaku apabila motor induksi sedang aktif. Walau bagaimanapun, terdapat banyak jenis starter lembut seperti Y-delta bermula, bermula melalui auto-alatubat, bermula melalui perintang stator, permulaan kawalan voltan dan kawalan frekuensi. Dalam projek ini, arus masuk berkurang dengan mengawal voltan. Voltan akan secara beransur-ansur meningkat dengan mengawal sudut penembakan TRIAC dan sudut penembakan akan dikawal oleh mikrokontroler yang Arduino Uno. Apabila voltan meningkat secara beransur-ansur, arusnya akan meningkat secara beransur-ansur. Oleh itu, ini akan mengurangkan arus masuk dan motor yang dilindungi. Keputusan simulasi menunjukkan bahawa arus masuk yang tinggi boleh dikurangkan dengan meningkatkan nilai voltan perlahan-lahan dengan mengawal sudut penembakan TRIAC. Apabila voltan meningkat perlahan-lahan, arus juga akan meningkan perlahan-lahan. Akhir sekali, pemula pelembut boleh mengurangkan arus masuk yang tinggi dengan mengawal voltan. _______________________________________________________________________________________________________ Soft starter is an electrical device which reduces the inrush current when the induction motor starts to operate. Soft Starter is used in many applications such as compressors, blowers, fans, pumps, mixers, crushers and grinders, and many other applications. When induction motor is on, the high starting torque require in order for the induction motor starts operate. This high starting will require high inrush current. Therefore, it is very importance for the induction motor in order to protect the motor from inrush current that can damage the induction motor. Soft starter also can reduce the power losses that happen when the induction motor is on. However, there are many type of soft starter like Y-delta starting, starting via auto-transformer, starting via stator resistors, voltage control starting and frequency control starting. In this project, the inrush current is reduced by controlling the voltage. The voltage will gradually increase by controlling the firing angle of the TRIAC and the firing angle will controlled by the microcontroller which is Arduino Uno. When the voltage is increase gradually, the current also will increase gradually. Thus, this will reduce the inrush current and the motor protected. The simulation result shows that the inrush current can be reduced by increasing the voltage slowly by controlling the firing angle of the TRIAC. When voltage increases slowly, the current also increases slowly. Lastly, the soft starter can reduce the inrush current by controlling the voltage.
Contributor(s):
Mohamad Rozaidi Mohd Said - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875008642
Language:
English
Subject Keywords:
Soft; starter; electrical
First presented to the public:
6/1/2019
Original Publication Date:
3/10/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 45
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-03-10 15:31:02.147
Date Last Updated
2020-12-14 13:07:02.763
Submitter:
Mohd Jasnizam Mohd Salleh

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Soft starter for single phase induction motor1 2020-03-10 15:31:02.147