ORIGINAL RESEARCH
Mitigation of Uncertainties in Wind-Powered
Renewable Systems for Environmental Assets
Subramani Pragaspathy1, Anand Baskaran2
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1Nehru Institute of Engineering and Technology, Coimbatore, Tamilnadu, 641105 India
2Hindusthan College of Engineering and Technology, Coimbatore, Tamilnadu, 641032 India
Submission date: 2016-03-04
Final revision date: 2016-05-31
Acceptance date: 2016-08-02
Online publication date: 2017-01-31
Publication date: 2017-01-31
Pol. J. Environ. Stud. 2017;26(1):253-266
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ABSTRACT
Progress in semiconductor technology in recent decades has been continuously innovative regarding
renewable application. This paper presents fluctuationless output and increased energy captured by
a permanent magnet synchronous generator (PMSG) based variable speed wind turbine system (VSWTS)
through a composite action of peak power tracking (PPT) controllers in a closed-loop control of turbine
speed and boost converter. Though the sensorless control of tip speed ratio (TSR) is preferred at most,
incorporation of the high-speed digitized wind gauge replaces the complexity in the closed-loop drive of
the turbine generator. The proposed concept includes control over solid-state converters (SSC) to eliminate
switched-mode harmonics and thus DC link voltage is maintained at all levels. Fluctuations on the load side
can be eliminated with a pulse width modulation (PWM) inverter. The circuit simulation proclaims PMSG
voltage and boost voltage for different wind velocities to ensure real power control through optimal wind
turbine speed and reactive power control through stabilized output voltage. Our investigation was performed
on a 0.5 kW wind turbine generator and converter module to ensure the synchronized reactive power control
at both SSC stages. Comparative test results were taken pertaining to the above discussion, which validates
the performance of the proposed system in its typical area of application.