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논문 기본 정보
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- 학위논문
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- 2022
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초록· 키워드
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As convenience functions of home appliances are added, more power is required, and a high-capacity capacitor is needed for stable power supply. However, as a high-capacity capacitor is applied, a larger inrush current is generated for charging, and many side effects follow.
So, based on PSIM, a simulation was conducted to compare and analyze the inrush current reduction method for home appliances, and it was verified through experiments. Although there was a difference between the simulation results and the actual experimental results due to environmental factors occurring in the product state, similar results and trends were confirmed. Based on this, when it is necessary to reduce the inrush current of home appliances in the future, it is possible to shorten the time by applying appropriate technology through simulation.
In addition, in this paper, a technique for reducing inrush current by detecting AC voltage zero-crossing with two SMPS and Triac was proposed. The inrush current reduction effect was observed by operating the SMPS with a low-capacitance capacitor and then detecting the zero-crossing point where the AC voltage becomes 0. The improvement in inrush current reduction performance was confirmed through simulation while eliminating side effects such as heat generation and voltage drop that occur when reducing inrush current by connecting resistors or NTC thermistors used in series in series. 75% reduction performance was verified by reducing the inrush current that was generated more than 50A to less than 50A.
So, based on PSIM, a simulation was conducted to compare and analyze the inrush current reduction method for home appliances, and it was verified through experiments. Although there was a difference between the simulation results and the actual experimental results due to environmental factors occurring in the product state, similar results and trends were confirmed. Based on this, when it is necessary to reduce the inrush current of home appliances in the future, it is possible to shorten the time by applying appropriate technology through simulation.
In addition, in this paper, a technique for reducing inrush current by detecting AC voltage zero-crossing with two SMPS and Triac was proposed. The inrush current reduction effect was observed by operating the SMPS with a low-capacitance capacitor and then detecting the zero-crossing point where the AC voltage becomes 0. The improvement in inrush current reduction performance was confirmed through simulation while eliminating side effects such as heat generation and voltage drop that occur when reducing inrush current by connecting resistors or NTC thermistors used in series in series. 75% reduction performance was verified by reducing the inrush current that was generated more than 50A to less than 50A.
목차
1. 서론 12. 가전기기의 돌입전류 발생 42.1 돌입전류 42.2 돌입전류 인자분석 및 검증 52.2.1 캐패시터 변화에 따른 드럼세탁기의 돌입전류 변화 62.2.2 정격전압 변화에 따른 드럼세탁기의 돌입전류 변화 83. 가전기기의 돌입전류 저감 기술 93.1 기존 돌입전류 저감 기술 93.1.1 저항과 릴레이를 이용한 돌입전류 저감 기술 93.1.2 NTC 써미스터를 이용한 돌입전류 저감 기술 103.2 AC 전압의 Zero-Crossing 검출 돌입전류 저감 회로 제안 114. 시뮬레이션을 이용한 가전기기의 돌입전류 저감 모델 구축 134.1 시뮬레이션 모델 소개 134.2 성능 비교 분석 164.2.1 저항과 릴레이 방법에 대한 시뮬레이션 164.2.2 NTC 써미스터 방법에 대한 시뮬레이션 194.2.3 AC 전압의 Zero-Crossing 검출 방법에 대한 시뮬레이션 215. 실험을 통한 가전기기의 돌입전류 저감 모델 검증 235.1 실험 환경 소개 235.2 실험을 통한 모델 검증 245.2.1 저항과 릴레이 방법에 대한 실험결과 및 검증 245.2.2 NTC 써미스터 방법에 대한 실험결과 및 검증 265.2.3 AC 전압의 Zero-Crossing 검출 방법에 대한 실험결과 및 검증 286. 결론 31참고문헌 33Abstract 34
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