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Determination of Cost of Contra-Rotating Wind Turbine with Transformer with Rotating Half

Andrii Kovalchuk1 kovalchukandrii88 [at] gmail.com
Vasyl Khai2 vkhay [at] hotmail.com
  1. Department of Electrical Machinery and Apparatus, Lviv Polytechnic National University, Ukraine, Lviv, S. Bandery street 12.
  2. Department of Electrical Machinery and Apparatus, Lviv Polytechnic National University, Ukraine, Lviv, S. Bandery street 12.
Abstract 

For effective use of low-speed potential of a wind use low-power wind turbines with vertical axis of rotation (VAWT). A new design of contra-rotating noncontact VAWT in which two wind rotors rotate in opposite directions is proposed. The contactless transmission of generated power from the multipole permanent magnet synchronous generator (PMSG) and the regulation of electric power carries a special device – a transformer with rotating half (TRH). The cost of VAWT of the classical and offered sample is determined. The offered design of contra-rotating VAWT has till 42 % lower cost than a traditional design of wind turbine with vertical axis of rotation, and this cost advantage grows with reduction of power.

Keywords 
contra-rotating wind turbine
wind turbine with a vertical axis of rotation
a transformer with rotating half
References 

[1]  R. Tytko and V. Kalinichenko, “Vidnovliuvani dzrerela energii (dosvid Polszczi dla Ukrainy)” [“Renewable Energy Sources (Experience of Poland to Ukraine)”], Warsaw, Poland: OWG Publ., 2010, 533 pages.

[2]  O. Makarchuk, I. Shchur and A. Kovalchuk, “Bezkontaktna kontrrotorna vitroustanovka” [“Brushless contra rotor wind turbine”], No.u201207720, 2012.

[3]  I. Shchur and A. Kovalchuk, “Kvazioptymalne dyskretne rehuliuvannia navantazhennia synkhronnoho heneratora z postiinymy mahnitamy v bezkontaktnii kontrrotornii avtonomnii vitroustanovtsi” [“Quasi-optimal discrete control of load of synchronous generator with permanent magnets in contactless contra-rotating autonomous wind turbine”], Elektromekhanichni i enerhozberihaiuchi systemy – Electromechanical and saving system, No.3(19), pp.431-434, 2012.