4-레벨 컨버터를 이용한 단상 SRM의 새로운 제어기법

안소연(So-Yeon Ahn),Jianing Liang,이동희(Dong-Hee Lee),안진우(Jin-Woo Ahn) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10

본 논문에서는 비대칭 컨버터에 비하여 한개의 부스터 회로를 추가하여 단상 SR-Drive의 성능을 향상 시키며, 그에 따른 정출력 구간을 증가시켜 고속운전 구간에서의 토크를 증가시킬 수 있는 인버터를 제안한다. 또한, 제안된 4-레벨 인버터의 동작 모드는 비대칭 컨버터에 비하여, 충전 레벨의 전원을 정역으로 활용하여 빠른 여자(Excitation)와 감자(Demagnetization) 모드를 가지게 되므로, 제어의 활용성이 매우 높다. 따라서, SRM의 고속 운전에 필요한 여자전류의 빠른 확립을 통하여 응답시간을 개선시키며, 토크 발생구간을 확장시킬 수 있다. 제안된 4-레벨 인버터 구동형 단상 SRM의 운전특성은 시뮬레이션을 통해 검증하였다.

내생시차변수모형을 이용한 전력수요함수 추정

안소연(So-Yeon Ahn),진세준(Se-Jun Jin),유승훈(Seung-Hoon Yoo) 한국에너지학회 2016 에너지공학 Vol.25 No.2

임계 윤집의 대책 연구

안소연 ( Ahn So-yeon ) 한국사상문화학회 2020 韓國思想과 文化 Vol.101 No.-

인조대 척화파는 대외적인 흐름을 잘 보지 못하고 명분만 내세우다가 나라를 위기에 빠뜨렸고, 문치를 중시하는 유교문화로 인해 군사정책 또한 제대로 정비하지 못하였다고 오해 받아왔다. 그러나 조선을 주도한 사상인 성리학에 대한 이해가 심화되면서 서인-노론들이 개혁세력이었고 척화파와 삼학사에 대한 인식이 변화하면서 청의 외압으로부터 조선의 자주성을 지키고자 했으며 군사개혁을 위한 방안을 지속적으로 모색해 왔다는 사실이 밝혀졌다. 실제로 정묘호란 5년 후에 시행된 인조 9년 별시는 그 주제가 ‘성지(城池)’로 군사정책과 연관되어 있으며, 이 시험에 아원으로 합격한 삼학사 윤집의 대책이 전해지고 있다. 인조 9년 별시 책문에서는 중국사의 성지뿐만 아니라 우리나라 역사 중에 대해서도 되짚어보고, 이에 대한 분석을 토대로 당시 조정에서 후금의 침략의 방비책으로 논의되고 있던 서북지역과 강도의 방어선 구축, 민심의 안정 중 어떠한 정책을 추진해야 하는지를 묻고 있다. 윤집은 대책에서 물리적인 군사시설의 강화 또한 중요하지만 민생을 돌보는 것이 더욱 중요하다는 것을 강조하였다. 인조와 서인정권은 정묘호란을 겪고 차후에 다시 있을 침공에 대비하기 위하여 지속적으로 당시 군사문제를 논의·개선하고자 하였고, 이를 대과 전시 시험주제로 제시하여 이와 관련된 인재를 선발하고자 하였다. 윤집은 병자호란 당시 남한산성에서 주화파의 화의에 반대하고 끝까지 맞서 싸울 것을 주장하였으며, 청나라에 끌려가서도 항복하지 않고 끝내 순절하였다. 이후 효종이 즉위하여 척화파 인사들을 등용하고 북벌론을 주도하였으며, 효종-현종-숙종대를 거치면서 척화파 노론의 주도 하에 5군영이 완비되어 10만 양병이 이루어지고, 북한산성을 수축하는 등 군사제도와 설비가 개혁되어 나갔다. 이러한 척화파 노론의 군사제도 개혁에는 윤집과 같은 인조대 척화파의 사상이 기반이 되었다고 볼 수 있을 것이다. The Cheokhwa-pa in King In-Jo’s reign, who claimed the war was also judged to have missed the facts in pursuit of justification. And they have been misunderstood that military policies have also failed to be properly overhauled due to a culture of Confucianism that values literacy. However, as the understanding of the Neo-Confucianism that led the Joseon ideology deepened, it was revealed that the Seo-in and No-Ron faction were reformists. Also, it was found that the Cheokhwa-pa were the ones who led the various policies of the King In-jo’s regime, and discussions on military reform of the King In-jo’s regime were actively carried out under their leadership. In practice, the subject of the civil service examinations in 9th reigns in King In-Jo, which was conducted five years after Manchu invasion of 1627, is ‘Circumvallation(城池)’. And the subject The subject was related to military matters. Also Yoon-Jip’s answer, which passed the examination, is still in existence. The exam questions is deal with not only about the Circumvallation of Chinese history, but also about Korea's history. And based on the analysis, the exam question is asking which of the three policies, fortification of northwestern region or the establishment of a defense line of GangHwa Island, or gain public sentiment, which was discussed at the time as a defense against the invasion of Later Jin, should be pursued. Yoon-jib’s answer of examination emphasizes that strengthening physical military facilities is also important, but more importantly, taking care of the people. Like this, after the war, King In-jo and Seo-In faction’s regime continuously tried to discuss and improve the military issue at that time in preparation for another future invasion. And they used this issue as a test subject to select relevant talent. Yoon-jip, who passed the exam in second place, opposed the peace with the Qing Dynasty led by the Juhwa-pa at the time and insisted on fighting it. After negotiations for peace between Joseon and Qing dynasty, Qing Dynasty asked the Joseon government to send out the Cheokhwa-pa, he went out on his own and being taken to the Qing Dynasty. Eventually, He was executed without surrendering even after Qing Dynasty's intimidation and conciliation. After that, King Hyojong ascended the throne, he took the helm of the plan for Northern Subjugation by appointing Cheokhwa-pa. Accordingly, through king Hyo-jong, Hyeon-jong, and Sook-jong's reigns were led by Cheokhwa-pa No-ron faction and the military reform was carried out, completing the Five Central Military Camp and reconstructing Bukhansanseong. The basis of Noron's reform of the military system in the late Joseon Dynasty was the idea of the Cheokhwa-pa in King In-Jo’s era, such as Yoon-jib.

Investigating the Use of Translanguaging by Korean EFL Undergraduate Students

SO-YEON AHN(안소연) 담화·인지언어학회 2018 담화·인지언어학회 학술대회 발표논문집 Vol.2018 No.4

장 뒤뷔페의 반문화 예술론

안소연(So-Yeon Ahn) 현대미술사학회 1992 현대미술사연구 Vol.2 No.-

빈각을 호소하는 만성 불면 환자에 대한 황련해독탕 약침을 중심으로 한 한방 복합치료 1례 증례보고

안소연(So-Yeon Ahn),염혜원(Hye-Won Yeum),김상빈(Sang-Bin Kim),김재원(Jae-Won Kim),오민지(Min-Ji Oh),남동우(Dong-Woo Nam) 임상약침학회 2019 대한면역약침학회지 Vol.7 No.1

Objective : The purpose of this study is to investigate the effect of Hwangryunhaedok-tang pharmacopuncutre on frequent awakening in a 46-year-old female patient who has insomnia. Methods : Patient was treated with Hwangryunhaedok-tang pharmacopuncture on eleven acupoints including GV_{20}, right BL_{66}, ST_{44}, SI_{5}, ST_{41} and both GB_{20}, GB_{21} BL_{15}. Patient s quality of sleep was assessed by Korean version of Pittsburgh Sleep Quality Index(PSQI-K), Korean Sleep Scale(KSS), and Sleep Diary. The treatment was executed once per day between July 6-10, 2017. Results : After five treatment sessions, PSQI-K score changed from 12 to 17, mean value of KSS changed from 20 to 29 and mean value of sleep efficiency changed from 28 to 40. Conclusions : The result suggest that Hwangryunhaedok-tang pharmacopuncture can be a valuable option to relieve insomnia.

‘초현실주의 오브제’에 대한 정신분석학적 재조명

안소연(Ahn So-yeon) 현대미술사학회 2010 현대미술사연구 Vol.0 No.27

The purpose of this study is to redefine 'Surrealism object' based on psychoanalysis, primarily focusing on Alberto Giacometti's(1901-1966) works in 1930's. The reasons that Giacometti's early works were in the spotlight were that several art theorists such as Hal Foster, Rosalind Krauss, Mignon Nixon and etc redefined surrealism art from modem point of view based on Giacometti's 'Surrealism object.' Hence, while redefining the artistic recognition of 'Surrealism object' in which Giacometti played a main role, this study attempted to understand how it related to modem art. This thesis aimed to primarily redefine the fundamental concepts which surrealism implicated based on the framework of psychoanalysis by analyzing comparatively the surrealism of Georges Baraille which represented 'desublimation' in the contrast with surrealism movement around Andre Breton. Furthermore, surrealistic theological categories which Foster and Krauss redefined based on Sigmund Freud's and Jacques Lacans psychoanalysis were to be examined in this thesis. Based on the modem redefinition of such surrealism, the concrete analysis on 'surrealism object' around Giacometti was conducted and it is meaningful that 'surrealism object' was deeply connected with modem art based on the framework of psychoanalysis. Giacometti was infatuated with surrealistic works based on 'subconsciousness' and 'fantasy' which did not sculpture real objects - the fantasy of castration and the fantasy of intrauterine existence in Freud's the primal fantasy-, participating in a surrealistic group for a short period of time: from 1930 to 1935. It was concreted as the identity of sex that he showed, and the desire, suppression, loss, recover, and the instinct of life and death which existed inside from The Spoon Woman produced in 1926 to the end of surrealistic work of The Invisible Object in 1934. The surrealistic subject seen on Giacometti's sculpture was based on his trauma fantasy equivalent to Freud's 'basic fantasy. As several articles written by him in surrealistic publications such as 〈Minotaure〉 during his time as a surrealist could prove the facts, the fantasy of his childhood related to mothers body represented double consciousness; destructive aggressiveness on women's bodies and women's body as the subject of the desire. Such fantasy of his childhood seems to be deeply related to Oedipus complex on the Freud's point of view. As his double attitudes towards women were reflected in his works, Giacometti's Oedipus complex was not a common three-comered relation: father, mother and himself; Giacometti, but it seemed to be twisted two relations: himself and double mothers. As such relations with objects can be redefined by Melanie Klein's part-object concept, Mignon Nixon understood the image of 'part-object' observed in Giacometti's 'surrealism object' in comparison with Louise Bourgeois. As 'part-object' bas been explained by Gilles De1euze, Felix Guattari, and Krauss, it is notifiable that everyone suggested Giacometti's 〈Suspended Ball〉 as an example. It is meaningful that this study attempted to explore psychoanalysis, focusing on 'surrealism object' represented in Giacometti's early works. Since surrealists led by Breton are based on Freud's theory, they hoped that their surrealism were considered as simple love and liberation movements, remaining in the categories of automatism which emphasized liberal aspects of subconsciousness. However, new interpreters of surrealism who belonged to Breton's group around Paris after 1920's expressed the uncanny about trauma experiences rather than romantic love and pointed out the death impulse close to suppression rather than subconscious liberation. In addition, it showed how 'surrealism object' are connected with modem art through Klein's theory which revealed issues Freud'sand Lacan's psychoanalysis had failed to notice. Therefore, as it is the redefinition of surrealism excluded in modern art h

고속 블로워용 4/2 SRM의 특성 측정

안소연(So-Yeon Ahn),이동희(Dong-Hee Lee),안진우(Jin-Woo Ahn) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7

This paper presents a experimental result of a two-phase SRM(Switched Reluctance Motor) for high speed blower system. To reduce the electrical frequency and core losses at high speed region, in order to reduce torque ripple dead-band, variable rotor air-gap structure is adopted and the air-gap is optimized according to torque production.

고속 SRM의 토크 제어 기법

안소연(So-Yeon Ahn),이동희(Dong-Hee Lee),안진우(Jin-Woo Ahn) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10

This paper presents the torque control scheme of specific high speed SRM with non-contactable position detecting. The proto-type 4/2 SRM has the asymmetric inductance profile for the wide positive torque region which is proper in uni-directional application. In order to reduce the torque ripple of the motor. TSF(Torque Sharing Function) with adjustable on/off angle is presented in this paper. To implement the presented control scheme. non-contactable position sensor is used. The proposed torque control scheme can produce the Oat torque with the consideration of un-uniform torque characteristics in the single phase and two-phase torque region. The adjustable on/off angle can reduce the tail-current in the wide speed region. so the output torque can be constant. The proposed control scheme is verified by the computer simulations.

Classification and Characteristics Analysis of SR Converters

안소연(So-Yeon Ahn),안진우(Jin-Woo Ahn) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7

This paper reviewed and analyzed converters for SRM drive. SR converter has two parts, front ends and power converter. Since the capacitive front-end is widely used in voltage source converter, this paper focuses on topologies with the front-end. A novel classification of power converters for SR drives based on the commutation type is also introduced and analyzed.