Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Structural Characteristics Evaluation of the Injection Spiral Blade Used in Small Wind Turbines under Operating Conditions

운전하중 조건에서 소형 풍력 발전기용 사출 나선형 블레이드 구조특성 평가

  • Gil, Young-Uk (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Jo, Young-Kwan (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Ji, Ho-Seong (MEMS Technology Centre, Pusan National University) ;
  • Yang, Hyoung-Keun (Department of Engineering Research, ESCO RTS Co., Ltd.) ;
  • Baek, Joon-Ho (Department of Engineering Research, ESCO RTS Co., Ltd.) ;
  • Je, Duk-Geun (JESAN Co.) ;
  • Jeong, Ho-Seung (School of Mechanical Engineering, BK21 Plus, Pusan National University) ;
  • Park, Sang-Hu (School of Mechanical Engineering, ERC/NSDM, Pusan Nat'l UNIV.)
  • 길영욱 (부산대학교 기계공학부 대학원) ;
  • 조영관 (부산대학교 기계공학부 대학원) ;
  • 지호성 (부산대학교 초소형기계부품혁신센터) ;
  • 양형근 ((주)에스코알티에스) ;
  • 백준호 ((주)에스코알티에스) ;
  • 제덕근 ((주)제산정공) ;
  • 정호승 (부산대학교 기계공학부 BK21 플러스사업단) ;
  • 박상후 (부산대학교 기계공학부, 정밀정형 및 금형가공연구소)
  • Received : 2019.11.05
  • Accepted : 2019.12.04
  • Published : 2020.02.29
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Abstract

The purpose is to evaluate the structural characteristics of 750 mm diameter injection spiral blades under various operating conditions. A fiber-glass reinforced polypropylene material was employed to the injection blades, and mechanical tests on two kinds of glass-reinforced polypropylene were performed to evaluate the mechanical properties and to select a suitable candidate material. Also, three kinds of spiral blade geometries were studied to observe the influence of fixing rods between blades. For this, structural analyses were conducted to understand the role of fixing rods under a range of rotating speed. In addition, modal analysis was performed to confirm the resonance in the operating speed range. One-way fluid-structure interaction (FSI) analysis was carried out to know its mechanical integrity under dangerous wind speed conditions. Through this work, the structural characteristics of the proposed spiral blade geometries were studied under various operating conditions, and the requirements of mechanical properties of blades were determined.

Keywords

Acknowledgement

본 연구는 2018년도 한국에너지기술평가원의 지원을 받아 수행된 연구결과(No.20183030029120)이며, 부분적으로 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제(No.20173030041340)입니다.

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