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송성근(S.G. Song),박성준(S.J. Park),문채주(C.J. Moon) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
The number of transformers and the size of transformers in inverter using 3-phase transformer could be reduced compare with a multi-level inverter using single phase transformer. but still the 3-phase transformer inverter needs many switches. In this study, we proposed the isolated multi-level inverter using 3-phase transformers and common arm. Also, the equal-area method is used to calculate conduction angle with switching frequency equal to output fundamental frequency and it can reduce harmonics component of output voltage and switching loss. Finally, We tested multi-level inverter to clarify electric circuit and reasonableness through Matlab simulation and experiment by using prototype inverter.
송성근(S-G Song),이상훈(S.H. Lee),박성준(S-J Park) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper presents a 3㎾ grid-connection photovoltaic power generation system and its topology. Photovoltaic system must provide the sinusoidal output voltage wave for unity power factor. High frequency switching converters are becoming more popular because of several benefits which are essential in power conversion system. This paper introduces a high speed digital controller using TMS320F2812 DSP chip which can be used for high frequency switching converters The experimental results of the proposed PWM Inverter demonstrates its high performance with unity input power factor having very low distorsion in input current waveforms and good dynamic characteristics at full load.
전장건(J-G Jeon),송성근(S-G Song),우도(Yu Tao),손경종(G-J Son),박성준(S-J Park),김광헌(K-H Kim),문채주(C-J Moon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, an DC/DC converter system has been proposed, which is suitable for fuel cell based power generation systems. The proposed converter system has outstanding advantages over the conventional dc-dc converters with respect to high efficiency and high power density. The developed converter system has been experimentally tested with using DSP PWM controller so that the performance of the proposed converter could be effectively examined and the validity of the converter could be verified.
손경종(K.J Son),송성근(S.G Song),이상훈(S.H Lee),조수억(S.E Cho),박성준(S.J Park),김광헌(K.H Kim),문채주(C.J Moon) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
In this paper, an DC/DC converter system has been proposed, which is suitable for fuel cell based power generation systems. The proposed converter system has outstanding advantages over the conventional dc-dc converters with respect to high efficiency and high power density. The developed converter system has been experimentally tested with using DSP PWM controller so that the performance of the proposed converter could be effectively examined and the validity of the converter could be verified.
이인혁(I-H Lee),송성근(S-G Song),이상훈(S-H. Lee),박성준(S-J Park),남해곤(H-G Nam),정해덕(H-D Chung),장영학(Y-H Chang) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
In this paper, we proposed the electric circuit using one common arm of H-Bridge Inverters to reduce the number of switching component in multi-level PWM inverter combined with H-Bridge Inverters and Transformers. and we proposed the switching method that can be same rate of usage at each transformer. Also, we tested the proposed prototype inverter to clarify the proposed electric circuit and reasonableness of control signal.