Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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A Study on the Safety Evaluation of the Pitch Reducer for 8 MW Large Capacity Wind Turbines

8 MW급 대용량 풍력발전기용 피치감속기 안전성 평가에 관한 연구

  • 장서원 (중원대학교, 융합공학과 ) ;
  • 박세호 (중원대학교, 융합공학과 ) ;
  • 이형우 (중원대학교, 항공기계공학과 )
  • Received : 2022.10.13
  • Accepted : 2022.11.29
  • Published : 2022.12.30
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Abstract

In this paper, a study was conducted to evaluate the safety of pitch reducers for 8 MW class wind turbines. The housing and carrier of the pitch reducer were subjected to structural analysis for the ultimate load by load duration distribution (LDD). As a result of the finite element analysis of the housing parts, the part with the highest stress was the output housing, and the equivalent stress was 522.4 MPa and the safety factor was 1.14. As a result of finite analysis of the carrier, the highest stress occurred at 80.5 MPa in the first carrier, and the safety factor was 10.3. In addition, extreme strength and life analysis by LDD load were performed for gears and bearings included in each stage. The strength analysis of the planetary gear train was conducted based on ISO 6336, and the stability evaluation of the bearings through life analysis based on ISO 281 found all to be safe.

Keywords

Acknowledgement

이 논문은 산업통산부 한국에너지기술평가원이 지원한 '신재생에너지 핵심 기술개발 사업'으로 지원을받아 수행된 연구 결과입니다. (No. 20213030020020)

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