Comparison between locally produced low cost electric machine and wind generator
In Pakistan there is a short fall of electricity. Currently, the total amount of energy produced in Pakistan is about 19,500 MW through various resources such as hydel power, natural gas etc. The energy produces via hydel power is much less in comparison to production of energy through Furnace oil or Natural gas. Hydel power produces only 65,00 MW, while rest of 13,000 MW is produced either using Furnace oil or Natural Gas. Furthermore, nuclear and coal resources also contribute in energy production, but the yield is lower than the hydel power production, which is 450 MW and 150 MW respectively. The shortage of electricity reaches its peak i.e 6,000 MW in summer season and it is expected that this figure is expected to rise with time. Since Pakistan posses abundant wind resources for electricity generation, therefore it is essential to build indigenous low cost wind turbine to utilize these available resources efficiently and economically. This study specifically concerns with development of generator of horizontal axis of wind turbine.
In this study, three-phase AC asynchronous induction motor has been converted into a wind turbine generator to produce a robust and economical design. For this purpose, a test rig, consisting of two induction motors, chain sprocket, motor coupling, capacitors, and load bank of 2.3 KWwere used. During experimental trials, high voltage oil based capacitors were used to magnetize the generator coil. As generator motor is rotated slightly above its rated rpm of 2800, capacitors starts magnetizing the coil, which in turns produce potential difference that reverses the motor behavior and it start working as a generator. During the laboratory trials, it has been shown that this approach presents a robust and economical solution for developing wind turbine generators, as these induction motors are easily available at considerably low prices in comparison to DC generators.
Keywords: Wind turbine, Induction Motor, Generator, Renewable energy
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ABOUT THE AUTHORS
Sarmad Hameed
Sarmad Hameed is a Research Officer in CRER. He is currently pursuing his Master Degree in Industrial Controls & Automation Program from Usman Institute of Technology. He has earned his Bachelor Degree in Electronics from Sir Syed University of Engineering and Technology in 2010. His areas of interest are digital circuit designing, programming; troubleshooting and industrial control systems design. His job description includes integration of renewable energy technologies into the electric power system.
Moez-Ul-Hassan
Moez-ul-Hassan is a Research Officer in CRER. He is currently doing his MS-Control System from National University of Science and Technology (NUST). He has earned his B.E in Electronics from Nadirshaw Edulji Dinshaw (NED) University in 2009. His expertise is toward analog circuit designing, instrumentation, modeling of fuzzy controllers, renewable fuels, power electronics and energy conservation with practically implemented solutions. His job description in CRER includes energy efficient system modeling with sensitivity and predictability analysis.
Faraz Junejo
Faraz Junejo is Head of Mechatronics Engineering Department. He received his PhD in Mechatronics Engineering from Loughborough University, UK. He is also involved with Centre for Renewable Energy Research (CRER) group at SZABIST, Karachi. He is reviewer of Institution of Mechanical Engineers (IMechE) and Institute of Electrical and Electronics Engineers (IEEE) publications, and is a life time member of Pakistan Engineering Council (PEC). Recently, he has been selected as a member of National Curriculum Revision Committee (NCRC) meeting in Mechanical Engineering. His areas of interests include computer/machine vision, digital image & signal processing, artificial intelligence, condition monitoring and renewable energy.
Imran Amin
Imran Amin is the Head of Centre for Renewable Energy Research (CRER). He has earned his PhD in Mechatronics from Loughborough University, UK in 2007. He has an extensive teaching and research experience, and is the managing editor of the Journal of Independent Studies and Research - Computing (JISR-C). Since joining CRER, he has been overseeing and managing all the aspects of research projects running in CRER. His areas of interest are Mechatronic Systems, Artificial Intelligence, Infrared Imaging & Thermography, X-Ray Medical Imaging, Computer vision, Automation, Embedded systems and Robotics.
Sarmad Hameed
Sarmad Hameed is a Research Officer in CRER. He is currently pursuing his Master Degree in Industrial Controls & Automation Program from Usman Institute of Technology. He has earned his Bachelor Degree in Electronics from Sir Syed University of Engineering and Technology in 2010. His areas of interest are digital circuit designing, programming; troubleshooting and industrial control systems design. His job description includes integration of renewable energy technologies into the electric power system.
Moez-Ul-Hassan
Moez-ul-Hassan is a Research Officer in CRER. He is currently doing his MS-Control System from National University of Science and Technology (NUST). He has earned his B.E in Electronics from Nadirshaw Edulji Dinshaw (NED) University in 2009. His expertise is toward analog circuit designing, instrumentation, modeling of fuzzy controllers, renewable fuels, power electronics and energy conservation with practically implemented solutions. His job description in CRER includes energy efficient system modeling with sensitivity and predictability analysis.
Faraz Junejo
Faraz Junejo is Head of Mechatronics Engineering Department. He received his PhD in Mechatronics Engineering from Loughborough University, UK. He is also involved with Centre for Renewable Energy Research (CRER) group at SZABIST, Karachi. He is reviewer of Institution of Mechanical Engineers (IMechE) and Institute of Electrical and Electronics Engineers (IEEE) publications, and is a life time member of Pakistan Engineering Council (PEC). Recently, he has been selected as a member of National Curriculum Revision Committee (NCRC) meeting in Mechanical Engineering. His areas of interests include computer/machine vision, digital image & signal processing, artificial intelligence, condition monitoring and renewable energy.
Imran Amin
Imran Amin is the Head of Centre for Renewable Energy Research (CRER). He has earned his PhD in Mechatronics from Loughborough University, UK in 2007. He has an extensive teaching and research experience, and is the managing editor of the Journal of Independent Studies and Research - Computing (JISR-C). Since joining CRER, he has been overseeing and managing all the aspects of research projects running in CRER. His areas of interest are Mechatronic Systems, Artificial Intelligence, Infrared Imaging & Thermography, X-Ray Medical Imaging, Computer vision, Automation, Embedded systems and Robotics.
