DOI QR코드

DOI QR Code

통계 분석을 이용한 인버터용 전동기의 절연신뢰성에 영향을 주는 주요 변수의 상관관계 분석

The Correlation Study of Factors which effect on Insulation Reliability of Inverter Motor Using Statistical Analysis

  • 투고 : 2009.11.25
  • 심사 : 2010.04.09
  • 발행 : 2010.04.30

초록

산업용전동기는 신뢰성을 바탕으로 설계 및 제작되어 상용전압에 대한 기기의 신뢰성은 충분히 검증되어 있지만 스위칭 소자에 의해 주어지는 펄스상의 전압에 대하여는 신뢰성을 확보하지 못하고 있다. 본 연구에서는 인버터용 전동기의 신뢰성에 영향을 미치는 각종 변수(케이블의 길이, 단자전압, 습도, 온도, 스위칭 주파수 등)들을 검토하고 각 변수들 간의 상관관계를 실험을 통하여 분석하고 이를 통하여 전동기의 신뢰성을 예측할 수 있는 자료를 확보하여 인버터용 전동기의 신뢰성을 제고하고자 한다.

An industrial growth needs high quality of productivity and accuracy. So, the needs of power electronics became pressing. Recently both interest and demand about the technique of power electronics systems has been increased. Though power electronics has a lot of strong point, there are several problems which are harmonic effect, EMI(Electromagnetic Interference), malfunction of electric machinery, harmful effect on human, audible noise and so on. Because these problem are a potent influence on motor, so there needs the manufacture and redesign of motor. The real motors of industrial application have designed and manufactured on the basis of confidence. The study on motor using utility power source was verified sufficient to identify confidence of electric machinery on utility power source. However, a study on confidence is in progress about pulse source by switching device. An advanced company are studying to solve this problem. In this research, it is studied that each variables effecting motor reliability have correlation through experiment and more over forecasting the reliability of motor under inverter operation.

키워드

참고문헌

  1. GAMBICA/REMA, "Motor Insulation & PWM Inverter Drives", Shortform Guide, 1999.
  2. Skibinski.G.Erdman, J.Pankau, J.Campell, Assessing AC Motor Dielectric Withstand Capability to Reflected Voltage Stress using Corona Testing, 1996. IEEE IAS Record.
  3. NEMA MG1-1998, Motors and Generators Part 31, "Definite-Purpose Inverter Fed Polyphase Motors"
  4. LINCOLN Electric, Motor Division, "Evaluation Inverter-Duty Motor Insulation Systems using Corona Inception Voltage", Technical Brief, 1997.
  5. G. C. Stone, "The Statistics of Aging Models and Practical Reality", IEEE Trans. on Electrical Insulation, Vol. 28 No. 5, Oct. 1993.
  6. 송서일, 실험계획법, 한경사, 2005년 6월 30일
  7. 박성현, 현대실험계획법(개정판), 2005년 8월 1일