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PDP용 반파 공진형 멀티출력 하프브리지 컨버터의 다중 공진특성에 관한 연구
李在三(Jae-In Lee),孫虎仁(Ho-In Son) 대한전기학회 2006 전기학회논문지 B Vol.55 No.6
In recent years, having the advantages of being small, low in cost and high in efficiency, Half-wave resonant type, (having only one output diode), is used in ZVS Half-Bridge DC/DC converter. This paper presents the operation mode by multi-resonant factors in the Half-wave type multi-resonant converter with direct Buck chopper circuit operated in discontinuous current mode. To study the characteristics of a multi -resonant operation in steady-state, the characteristic impedances in each mode and safe operation-region(S.O.R) are reported. Computer simulation and experimental data are also given to verify the theoretical results.
손호인(Ho-In Son),김창선(Chang-Sun Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.7
The power supply devices applied to the electric vehicle are required for high efficiency and high power density. This paper presents a bidirectional ZVS DC-DC converter. A bidirectional DC-DC converter using the planar transformer has advantages of high efficiency, simple circuit, and lightweight. The operating principle, theoretical analysis, and design guidelines are provided in this paper. The simulation waveforms of the proposed converter are shown to verify its feasibility.
손호인(Ho-In Son) 한국조명·전기설비학회 2020 조명·전기설비학회논문지 Vol.34 No.9
Industrial devices are constrained by mobility due to power supply wires. In particular, safety accidents caused by mobile alternating current power are occurring in dark conditions inside the shipyard. Recently, research on wireless power supply for industrial devices requiring free mobility has drawn much attention. In this study, the wireless power transmission system was designed and verified by experiment results. As experiment results, the efficiency of the wireless power transmission was 85.5 [%] and the output ripple voltage of the wireless power transmission was less than 5 [%]. Moreover, the charged battery could be used for more than two hours.
NPC 3레벨 PWM 인버터에서 고장 발생에 따른 고장 진단과 중성점 전압 제어
손호인(Ho-In Son),김태진(Tae-Jin Kim),강대욱(Dae-Wook Kang),현동석(Dong-Seok Hyun) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
The 3-level converter/inverter system is very efficient In the ac motor drives of high voltage and high power application. This paper proposed a simple method to diagnose faults using change of current vector pattern In space vector diagram when the faults occurrence In the 3-level Inverter and a control method that can protect system from unbalance of the neutral point voltage according to faults. The validity of the proposed method IS demonstrated by the simulation results.
Analysis and synthesis of Korean Vowels by LP Method
손호인,신동진,안수길,Son, Ho-In,Sin, Dong-Jin,An, Su-Gil The Institute of Electronics and Information Engin 1981 전자공학회지 Vol.18 No.1
The human speech contains many redundancies. To economize communication channel or memory size for a computerized synthesis of human voices, it is necessary to compress the data before sending. We have treated human speech organ as an eighth order dynamic system which is time varying as the person speaks. Using an anaylyzer of our design, each eight parameters are obtained for the vowels [아], [어], [오], [우], [으], [이], [애], and (외) of korean language with considerable discrepancies between persons. Supplying those parameters to a synthesizer which we have made, we have sucoeeded in the simulation of human speech for the above mentioned vowels of Korean language and observed that they bear all the features of the original speakers.
전기자동차의 폐배터리의 Re-Use 및 Re-Cycling 산업소개
손호인(Ho-In Son) 대한전기학회 2021 전기의 세계 Vol.70 No.11
본 원고에서는 리튬이온 배터리의 구조와 원리, 전기자동차 확대에 따른 폐배터리 발생량 및 폐배터리 관리 및 법안을 검토하고, 폐배터리의 Re-Use 및 Re-Cycling 사례를 살펴보겠다. In this manuscript, the structure and principle of lithium-ion batteries, the amount of waste batteries generated by the expansion of EV(Electric Vehicles), waste battery management and legislation will be reviewed, and examples of re-use and re-cycling of waste batteries will be reviewed.