태양광 발전시스템을 위한 계통 연계형 PWM 인버터의 변조지연 보상

성낙규,한경희,강승욱,이승환,유택빈 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

Since the residential load is an AC load, while the output of solar cell is a DC power, the photovoltaic system needs the DC/AC converter to utilize solar cell and must provide the sinusoidal wave current and voltage, at unity power factor in the case of driving to interact with utility line. PWM modulator must do stable modulation even though it contains the disturbance like a distortion and noise, and it needs compensation method, because there is a timing interval between sampling points and carrier waves, while the synchronous signal is controlled by the micro processor. In this paper, we maximaze output of solar cells which is propotional to variation of insolation, using single phase PWM voltage source inverter, and we can drive in high power factor with utility line by control and compensation method which is concerned with synchronous signal distortion and modulation delay, using low pass filter and phase shifter.

Kant의 道德法則에 關한 小考(Ⅱ) : 幸福의 原理을 中心으로 centered on the principle of happiness

金洛龜 대구교육대학교 1974 論文集 Vol.10 No.-

This paper is an attempt to study on an aspect of Kant's moral philosophy. Kant's moral law must have an absolute universality. Then his moral law disapproves all kinds of external desire such as pleasure and happiness-a posterior element. It calls for what is done only with conciousness of pure duty. We can behave conformably to our duty with the conciousness of our self-interst. Kant, however, says that though such an act is not against duty, it can hardly be called to be moral, because though conformable to our duty, it is not from our duty. This belongs to the called principle of happiness. The principle of happiness is Hypothetical order, and moral law is called Categorial order. The principle of happiness does not belong to the Understandworld, but to the Materialworld. The principle of happiness belong to altogether experiential Element.

강한 자기장 내에서의 전자-수소원자 산란을 위한 J-matrix 방법: I, L² basis의 선택

최낙렬 金烏工科大學校 1990 論文集 Vol.11 No.-

강한 자기장 내에서의 전자-수소원자 산란을 다루기에 적합한 J-matrix의 L²basis를 SO(2,1) Lie algevra를 이용하여 찾아낸다. 이 basis set은 모든 matrix element를 analytic하게 구할 수 있게 해준다

人間學의 問題(Ⅰ)

金洛龜 대구교육대학교 1975 論文集 Vol.11 No.-

What is human being? This is the problem which we have studied for a long time as the human history. Knowledge about man abounds today, cultural anthropology, anatomy psychology, sociology and other allied fields of study continue to reach into their respective aspects of what man is and what he does. But no man who had solved this problem completely was ever found at all. It will remain an eternal problem for usto solve.

피부 원발성 CD30 (Ki-1) 양성 림프구증식 질환 : 중간형 1예 보고 Report of a Borderline Case

노낙경,윤성재,박형석,김원석,이일수 대한피부과학회 2003 대한피부과학회지 Vol.41 No.6

Primary cutaneous CD3O positive large cell Iymphoma is a cutaneous T-cell Iymphoma with a favorable prognosis, which is characterized by solitary or localized skin lesions with a tendency of spontaneous regression and frequent relapses. On the basis of the morphologic and immunophenotypic similarities between the large atypical cells in Iymphomatoid papulosis and the neoplastic cells in primary cutaneous CD30 positive large cell Iymphoma as well as their favorable prognosis, these two diseases are now regarded to be in a spectrum of primary cutaneous CD3O positive Iymphoproliferative disorder. We present a borderline case of primary cutaneous CD3O positive Iymphoproliferative disorder which recurred on the anatomic site different to the primary lesions despite multiple-agent chemotherapy. (Korean J Dermatol 2003;41(6) : 826~829)

퍼지제어에 의한 태양전지의 최대출력점 추적제어

김종수,성낙규,이승환,강승욱,한경희 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

The solar cells should be operated at the maximum power point because its output characteristics are greatly fluctuate on the variations of insolation, temperature and loads. To obtain maximum power from solar cell, photovoltaic system cell power system usually requires maximum power point tracking controller. This paper propose Maximum power point tracking method by power compare and fuzzy control. The power compare method have got fault that is oscillation and speed of trace at maximum power point. To solve two problem of the power compare method, designed fuzzy controller logic traces maximum power point without variations of insolation, temperature and loads.

여행도매업체와 여행소매업체간 관계형성 영향요인에 관한 연구

심종섭,이낙귀 한국산학경영학회 2002 산학경영연구 Vol.15 No.-

여행도매업체는 시장개방, 경쟁기업의 출현, 개인소득의 증가로 인한 소비자 욕구의 다양화 등 환경의 급속한 변화로 소매여행업체와의 관계에 있어 보다 효율적인 마케팅전략 수립이 요구되고 있다. 따라서 여행도매업체의 여행소매업체에 대한 관계적 특성요인을 확인하고, 관계형성요인간의 관계성을 연구함으로써 여행업계에서 현실적으로 적용할 수 있는 관계마케팅 차원의 접근이 필요하다. 본 연구는 여행업의 유통경로상에서 여행도매업체에의 여행소매업체에 대한 관계적 특성요인들이 신뢰, 몰입, 그리고 재구매의도에 어떠한 영향을 주는지를 규명하고 개선방향을 제시하기 위하여 실증적 분석을 하였다. 본 연구는 여행도매업체에의 여행소매업체에 대한 관계성에 초점을 맞춘 것으로 변수간의 관계를 분석하기 위해 연구모형과 가설을 설정한 후 검증하였다. 분석결과 전반적인 연구모형에 대한 적합도는 설정기준 이상으로 나와 가설검증을 실시하였다. 연구결과는 첫째, 여행도매업체의 최고경영자나 마케터들에게 여행소매업체와의 관계에서 현장에서 적용할 수 있는 효율적인 마케팅전략 방안을 구체적으로 제시해 주고, 둘째, 여행도매업체는 여행소매업자로부터 신뢰구축을 통하여 장기적인 교환관계유지와 같은 관계지향적인 방법으로 여행소매업체를 관리해야 한다는 시사점을 제시하고 있다. The purpose of study is to examine how tour wholesaler’s relationship characteristics to tour retailer affect trust, commitment, and repurchase intention in the distribution channel of travel industry. There are several derailed purposes of this study. First, this study is to grasp the factors of tour wholesaler’s relationship characteristics to tour retailer. Secondly. This study is to examine how tour wholesaler’s relationship characteristics to tour retailer affect trust and commitment. Thirdly, this study is to examine how trust on tour wholesaler, which is divided into two levels, firm and salesperson in charge, affects each other and commitment. Fourthly, this study is to examine how trust on tour wholesaler firm and salesperson in charge and commitment affect repurchase intention. Fifthly, this study is to suggest more efficient basis for marketing strategies to C.E.O or officer in charge of decision making of tour wholesaler, and help them to make right decisions. Managerial implications can be drawn from this study. One is that it is recognized that tour wholesaler’s relationship characteristics to tour retailer consist of those to tour wholesaler firm such as reputation, physical characteristics, communication and those to salesperson in charge such as expertise, likability, similarity, frequent contact affect trust and commitment positively. Therefore, C.E.O and officer in charge of decision making of tour wholesaler should set up marketing strategies to get positive results at both levels, a firm and a salesperson. The other is that it is important that a tour wholesaler should manage their tour retailer with relationship oriented methods such as building trust, and make every endeavor to retain long term relationship with tour retailer.

PV 전류에 의한 계통연계형 태양광발전시스템의 최대출력 추적제어에 관한 연구

박인덕,성낙규,이승환,이훈구,한경희 명지대학교 대학원 1999 대학원논문집 Vol.3 No.-

A step down chopper and PWM current source inverter is used for the connection between the PV array and the utility. This paper proposes chopper is controlled for the de reactor decrease and PWM current source inverter is controlled to keep the output power at the maximum point for the PV. The PV current only is measured and employed for the power calculation combining the control parameter of the PWM current source inverter.

2자유도 PI 제어기를 이용한 BLDC 전동기의 벡터제어에 관한 연구

이종현,성낙규,이상집,이승환,오봉환,이훈구,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

This paper describes the speed control method of BLDC Motor using TDOF PI ( Tow-degree of freedom PI ). PI control method generally used has difficulty in efficient speed control because speed response and load torque response interfere each other. It can't decrease the overshoot of motor speed w rm, and shorten the response time of load torque TL, at the same time according to the step alternation of speed reference w rm. Therefore TDOF PI is applied to BLDC Motor in order to supply these weak points of PI control method in this paper. TDOF PI can get the torque characteristic of short response time as well as stable and prompt speed adjustment by separate control for speed response and load torque response. The results from the tests of C program simulation and system construction show that TDOF PI is superior to PI control system in speed adjustment and load torque response.

2분할 2상 쵸퍼에 의한 태양광발전시스템에 관한 연구

한경희,성낙규,김연경 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-

In this paper, two-phase chopper system with two separated groups to obtain two identical DC is used to charge the energy from the solar cell in two battery. They are controlled to be operated around maximum output of the solar cell under the condition of constant voltage. Photovoltaic system with DC-AC conversion is also investigated for big capacity and two separated electric power using two separated inverter.