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이중컨버터방식 직류전원공급장치의 순환전류제어에 의한 입력 역율개선
이규종,이기홍,성세진 忠南大學校 産業技術硏究所 1989 산업기술연구논문집 Vol.4 No.2
이중컨버터방식의 직류전원공급장치는 4상한 운전이 필요한 직류모터, 직류쵸파, PWM인버터등의 대용량 전력변환장치의 직류전원으로 주로 사용된다. 그러나 순환전류를 제어하는 이중컨터방식의 직류전원공급장치에서는 위상제어와 P와 N 두 컨버터 사이에 흐르는 순환전류에 의하여 교류입력측에 무효전력을 발생시키는 단점이 있다. 최근 이중컨버터방식의 순환전류제어에 관한 논문이 몇편 발표된 일이 있다. 본 논문에서는 이 순환전류제어방식을 이용하여 교류입력측 역율을 1로 보상할 수 있는 방안을 제시하였으며 이방안의 가능성을 컴퓨터 시뮤레이션과 실험을 통하여 확인하다.
성세진,고석진,황인호 충남대학교 공업교육연구소 1986 論文集 Vol.9 No.1
Results on the fly-wheel energy storage system driven by a high speed, and high frequency dual-inverter are summarized in this paper. The purposes of this system are mainly to achieve effective use of braking energy of electric railway locomotives, and additionally to reduce the peak load demand and the cost of electric utility. Economic evaluation is performed compared with the battery storage system. Basic characteristics of the Dual-inverter system, for the high power and high speed drive of fly wheel studied and the opening and closing method of the inverter from the induction machine during, the energy storing period, is suggested.
成世鎭,李殷雄,鄭泰媛,南副熙,張錫明 충남대학교 공업교육연구소 1979 論文集 Vol.2 No.2
To determime the feasibility of improving the education in the departments of technical high schools, 3 company were visited and appropriate material were gathered and analyzed. From the results of this study it was determined that there is much need for knowledge and skill pertaining to measurement and control devices; hence, these should be more available in courses in the electrical departments of technical high schools. Many experimental facilities should be equipped in order to attain the high quality of skill and knowledge required in that field. Because of the expense of such equipment and its low use factor, industry-school cooperation should be expanded and strengthened thus making available to the studsnts the knowledges and skills needed by the industry.
고조파가 제거된 단상 SCR인버터를 사용한 相變換에 관한 연구
成世鎭,南副熙 충남대학교 공업교육연구소 1978 論文集 Vol.1 No.2
This paper deals with the single to three phase converter using the single SCR inverter. To obtain a quasi-sinusoidal inverter output waveforms, the third and fifth harmonics are eliminated. Numerical techniques are applied to solve the nonlinear equations of the problem on the computer. The results show the feasibility of obtaining practically sinusoidal output waveforms, which are highly desirable in most inverter applications.
成世鎭,權世爀,李興浩 충남대학교 공업교육연구소 1978 論文集 Vol.1 No.1
An improved staff-development model for technical high-school teacher educatcon is presented through the study of related references, The areas of curriculum of in-service technical teacher education must be appropriate to the needs of teachers at different level, meet their future duty and self-development. Another course for their major subjects should be prepared and its contents and methodology should be structured to meet the fast developing technology.
成世鎭,車貴守 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.2
In case of using the numerical control machine(CNC) for the metal cutting machine, the accuracy of the interpolator is more important than the speed of it. This paper presents a interpolator having high accuracy and simple algorithm. The interpolator is realized by general purpose 6502 microprocessor without designing a special purpose processor. Error generated by the interpolator is less than half of basic unit and the speed of the interpolator is faster than that of metal cutting machine. And the various functions, such as speed control function, manual operating function and material finishing function are all operated as expected.
성세진 충남대학교 공업기술개발연구소 1976 工業技術開發硏究所論文集 Vol.3 No.1
This paper describes load-current synchronized Thyristor Gating method in Thyristor controlled alternating current power. The time taking to the load-current to be synchronized with induced voltage is calculated by computer and proved to be considerably short.