조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제28권11호
  • /
  • Pages.100-105
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  • 2014
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  • 1229-4691(pISSN)
  • /
  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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Random PWM 기법을 이용한 무정전 전원장치의 노이즈 저감에 관한 연구

A study on the Noise Reduction of Uninterruptible Power Supply using Random PWM Method

  • 엄태욱 (동양미래대학교 자동화시스템과) ;
  • 이병순 (서일대학교 전기과) ;
  • 이재학 (청암대학교 소방안전관리과)
  • 투고 : 2014.09.02
  • 심사 : 2014.10.02
  • 발행 : 2014.11.28
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초록

In this paper, Uninterruptible Power Supply(UPS) Inverter system using Carrier Frequency Modulated PWM (CFM-PWM) is proposed to reduced harmonics and electromagnetic noise. Power conversion of UPS system is executed by the ON-OFF operation of semiconductor switching devices. However, this switching operation causes the surge and EMI which deteriorate the reliability of the UPS system. This Problems improved by Random PWM switching method. The simulation results of the proposed system was compared with the system using conventional method using Matlab/Simulink. The results show that the output voltage and current harmonics of the proposed UPS system significantly decreased and spread into wide band area by the proposed Carrier Frequency Modulated PWM(CFM-PWM) method based on the Space Vector Modulation.

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참고문헌

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