Earticle

초록

영어

Switch open fault characteristics and simple diagnosis scheme in a permanent magnet synchronous generator (PMSG) based variable-speed grid-connected wind power conversion are presented. In the back-to-back converter, the failure in switching devices may occur either in a machine side converter (MSC) or in a grid side converter (GSC), which decreases the generator output power and degrades the stability in wind power generation system. To detect such a fault, a monitoring scheme for the second-order harmonic components in the q-axis current is proposed, where the harmonic values are simultaneously observed in the MSC as well as in the GSC to monitor abnormal operation of system. To determine the harmonic values irrespective of operating conditions, the normalized currents are employed for the harmonic calculation. To verify the effectiveness of the proposed fault diagnosis scheme, the comparative simulation results are presented. As a result, an on-line simple diagnosis scheme which monitors the condition of generation system can be realized without requiring any additional hardware equipment.

목차

Abstract
 1. Introduction
 2. Back-to-back Converter in Grid-connected Wind Power Systems
 3. Open Fault Characteristics and Diagnosis Scheme
 4. Simulation Result
 5. Conclusions
 Acknowledgements
 References

키워드

저자

• Kyeong-Hwa Kim [ Department of Electrical and Information Engineering Seoul National University of Science and Technology ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605