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옥외 태양광 발전 시스템의 Potential Induced Degradation 진단 및 야간 역전압 회복 연구
최훈주,김광현,장동식,배수현,박노창,오원욱 한국태양광발전학회 2017 한국태양광발전학회지 Vol.3 No.2
The potential induced degradation (PID) phenomenon shows severe power loss within several years from the initial installation of solar power system. The accumulated power loss by PID is inevitable because the PID is suspected only if the power loss exceeds several percent. In this paper, we analyzed the cases of PID diagnosis and recovery by visiting the suspected PID site about 17 months after the installation of the 100kW PV system. The power difference of the two 50kW inverters was more than 20kWh, and the PR difference was more than 8%. From the beginning of the installation, the difference in power gradually increased. The recovery was observed for about 7 months by applying 1000V in the reverse bias at night. As a result, the power difference of the two inverters was recovered to within 2kWh. In the case of a power station suffering from PID in the field, it will be helpful for stable development operation by quick diagnosis and problem solving.
브레인스토밍에서 아이디어의 창출기법 활용이 창의성에 미치는 영향
이상진,이민영,황근호,최훈주,김근배 대한경영학회 2019 大韓經營學會誌 Vol.32 No.1
Unlike the past, Korean companies have become the market leader who take advantage of their core competence throughout the creative innovation activity. Over the past few years, Korean companies tend to imitate the advanced country's know-how related to the products and services, technologies so fast. For the creative innovation, Korean companies must develop how to create the creative idea everyday. And then we should learn the creative thinking methods how to invade into Korean company's organizations and individuals. But so many Korean companies think the creative thinking is very particularly special talent. In fact, it can be developed to learn or discipline. In order for Korean companies to escape from the pace of slow growth, they must lead the market as a leader in the world market through innovation. To this end, Korean companies must learn creative ways to connect their ideas to new products and train them to their employees. An important brainstorming method of operation in this study is can be considered from the viewpoint of the systematic approach. And the ideation technique is from the viewpoint of cognitive approach. Therefore, this study combines the main two creative methods. and then we will finds the implication. In this study, we investigated the result which a little different three brainstorming operation. Each experiment explores the influence of the creativity. and we explored the idea generation method in three structures. Three are cases in which ideas are created when brainstorming is used, when individuals are separately worked on, then gathered back into groups to brainstorm and individually. We used the idea generation technique which S.I.T(Systematic Inventive Thinking). It developed Osborn's checklist method, Second method is Assumptive questions CREATOR. The final method is combined with S.I.T and Assumptive questions CREATOR. Of course, the final method has the most questions. A given problem is to derive to the participant the idea of improving customer complaints at a coffee shop. The results of this study are as follow. First it was confirmed that creative methods were used as a supplementary means through the comparison between brainstorming and hybrid brainstorming. and then applied to individual tasks without brainstorming. This study investigates three major methods. The three methods are summarized as follows. 1) Creating the individual idea with brainstorming 2) Creating the individual idea with hybrid brainstorming 3) Creating the individual idea without brainstorming . And The idea generation technique is as follows 1) non-use 2) using S.I.T 3) Assumptive questions CREATORS 4) combined two technique: S.I.T + Assumptive questions CREATORS. In this study, the method of brainstorming is applied from the institutional viewpoint, and the idea generation technique is applied from the perspective of cognitive approach. Therefore, it is meaningful that this study combines two representative trends of creativity research. The use of idea-making techniques in all three methods was likely to have a positive impact on creativity than non-use idea-making techniques. In addition, the more questions asked in the idea generation technique, the greater the number of ideas and creative ideas. Further analysis showed that there was a strong correlation between the quantity and quality of ideas. What should be noted here is the number of questions. The number of questions used in S.I.T is 5, the number of questions used in the Assumptive questions CREATORS is 7 and the number of questions used in the S.I.T + Assumptive questions CREATORS was 11. The more the number of questions, it brings to the more creative idea. There is a strong linear relationship between the number of questions in the question and more ideas and creative ideas. This study confirms how creativity is influenced by brainstorming methods and idea creation techniques. It is possible to find implications, meanings in te... 한국 기업이 저성장의 늪에서 벗어나기 위해서는 혁신을 통해 세계 시장에서 선도자로 시장을 주도하여야한다. 이를 위해 한국 기업은 개인의 아이디어를 신제품으로 연결시키는 창의적 방법을 습득하고 이를 종업원에게 훈련시켜야 한다. 본 연구에서는 기업에서 많이 사용하고 있는 브레인스토밍에서 아이디어 창출기법이창의성에 미치는 영향을 탐색하였다. 아이디어 창출기법은 오스본의 체크리스트 법을 발전시킨 S.I.T (Systematic Inventive Thinking, 체계적 발명사고)와 가정질문 CREATOR, S.I.T와 가정질문 CREATORS를합친 것을 사용하였다. 실험주제는 스타벅스 커피전문점의 고객들의 불만사항을 개선하는 아이디어 제안이다. 본 연구에서는 아이디어 창출방법을 3가지의 구조 안에서 탐색하였다. 3가지는 브레인스토밍을 하면서아이디어를 창출한 경우, 개인이 별도로 작업한 후에 다시 그룹으로 모여 브레인스토밍(하이브리드 브레인스토밍)하는 경우, 개인별로 아이디어를 창출한 경우이다. 창의적 발상법이 브레인스토밍과 하이브리드 브레인스토밍에서 유효한 것을 확인한 후, 이를 브레인스토밍을 하지 않는 개인 과업에도 적용해 보았는데 효과가 있는것으로 나타났다. 3가지 경우에서 모두 아이디어 창출기법을 활용하였을 경우가 아이디어 창출기법을 활용하지않았을 때보다 창의성에 긍정적 영향을 미치는 것으로 나타났다. 또한 아이디어 창출기법에 사용한 질문의문항 수가 많으면 많을수록 더 많은 양의 아이디어와 창의적 아이디어를 창출되었다. 추가적 분석을 통해아이디어의 양과 질 간에 강한 상관관계가 있음이 확인되었다. 본 연구에서는 브레인스토밍의 운영방법은 제도론적인 관점에서, 아이디어 창출기법 활용은 인지적 접근이라는 관점에서 적용하였다. 따라서 본 연구는 창의성 연구의 대표적 두 가지 흐름을 결합시켰다는 데 의의가있다. 연구의 결론은 효율적 브레인스토밍 운영과 다양한 아이디어 창출기법 활용이 신제품 개발에 있어서창의적이고 성공적 결과물을 도출할 수 있다는 것이다.