http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배터리 입력단에 전달되는 전도 노이즈 분석을 위한 단상 인버터의 고주파 회로 모델
박상해(Sanghae Park),차한주(Hanju Cha) 대한전기학회 2023 전기학회논문지 Vol.72 No.6
In this paper, a method for predicting the noise generated by IGBT switching during power conversion of a single-phase inverter and transmitted to the input power stage is proposed. A high-frequency impedance component is added to the single-phase inverter circuit configuration and modeled, and each parasitic impedance component is measured in the range of 150 kHz to 30 MHz to accurately predict noise, and a high-frequency detailed circuit model is proposed. In addition, a high-frequency equivalent circuit is modeled with significantly reduced simulation time by reflecting the switching control process from the high-frequency detailed circuit model to the noise source model. The validity of the proposed high-frequency detailed circuit and high-frequency equivalent circuit is verified by constructing a separate test bench and comparing it with the experimental results. As a result, the resonance point of the high-frequency detailed circuit is 91.35dBuV at 7.39MHz, the resonance point of the high-frequency equivalent circuit is 96.36dBuV at 7.23MHz, and the resonance point measured in the actual experiment is 95.76dBuV at 7.33MHz.The proposed prediction method can be applied to the development of applications including single-phase inverter, and based on the predicted analysis results, it can be used to determine the cause and take appropriate measures when the noise exceeds the international standard.
김동민(Dongmin Kim),박상해(Sanghae Park),차한주(Hanju Cha) 전력전자학회 2021 전력전자학술대회 논문집 Vol.2021 No.11
DFIM 시스템은 신재생 에너지 자원이 대량으로 생산되거나 부하 측에 갑작스러운 변동 발생으로 인한 주파수 변화에 대한 빠른 대응이 가능하다는 장점을 가지고 있다. 본 논문에서 DFIM 시스템의 고정자는 계통에 연결하고 회전자는 백투백 컨버터에 연결하여 전력제어 등가회로를 통해 유효전력 제어를 수행한다. 따라서 계통의 요구에 맞춘 유연성 자원으로써 동작하는 DFIM의 벡터제어, 전력제어를 모델링하고 유효전력 제어 성능을 시뮬레이션으로 확인한다.
김정훈(Jung-Hoon Kim),손기석(Gi-Seok Son),장석영(Seok-young Chang),박상해(Sang-Hae Park),원찬희(Chan-Hee Won),민동준(Dong-Joon Min),홍창욱(Chang-Oug Hong),강희경,권중록(Joong-Lok Kwon),Hyun-Dong Lee 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
The Fuel Processing System for Fuel Cell Vehicle is the device which can supply highly pressured hydrogen to the stack and perform several functions such as decreasing the pressure and controlling the flux of hydrogen. It is essential to design Fuel Processing System which is capable to supply and recirculate the fuel from low-flow areas to high-flow areas, because Fuel-cell Vehicle is drived through broad flow areas and consists of dead-end type. In this process, the performance of Fuel processing system is advanced through the improvement of recirculation system such as Ejector and Hydrogen recirculation blower.