• 제목/요약/키워드: detailed description

검색결과 463건 처리시간 0.023초

3상 유도전동기 구동용 새로운 ZVT 인버터의 제어기법 (A Control Strategy of the ZVT Inverter for Induction Motor Drives)

  • 송인석;이성룡
    • 전력전자학회:학술대회논문집
    • /
    • 전력전자학회 1998년도 전력전자학술대회 논문집
    • /
    • pp.10-13
    • /
    • 1998
  • In this paper, a control strategy of the three phase ZVT inverter for ac motor drives is proposed. The topology of ZVT inverter analyzed with a description of the control conditions dependent on the load current and MSVM(Modified Space Vector Modulation). The detailed simulation results indicate that zero-voltage operation during transition of the MSVM algorithm can be achieved.

  • PDF

A Control Strategy of the Three-Phase Bridge-type ZVT Inverter for AC Motor Drives

  • Lee, Seong-Ryong
    • 전력전자학회:학술대회논문집
    • /
    • 전력전자학회 1998년도 Proceedings ICPE 98 1998 International Conference on Power Electronics
    • /
    • pp.529-534
    • /
    • 1998
  • In this paper, control strategies of the bridge-type ZVT inverter for AC motor drive application were discussed. The topology of the ZVT inverter is analyzed with a description of the control conditions based on the load current. And a new resonant control algorithm by using load current feedback and modified SVM algorithm for the proposed ZVT inverter is proposed in order to achieve the ZVT switching condition in full control range. The detailed computer simulation and experimental results represent that ZVT and ZCT operation for the main and auxiliary switch, respectively, was achieved.

  • PDF

Mysidacea (Crustacea) from the West Coast of Korea

  • Jo Soo-Gun;MA Chae-Woo
    • 한국수산과학회지
    • /
    • 제29권6호
    • /
    • pp.805-827
    • /
    • 1996
  • Fifteen mysid species representing 4 genera are reported from the west coast of Korea, Of these, Archaeomysis vulgaris (Nakazawa), Archaeomysis japonica Hanamura, Jo and Murano and Acanthomysis tenuicauda Murano are new to the Korean fauna, Acanthomysis aspera li, Acanthomysis fujinagai li, Acanthomysis japonica Nakazawa and Acanthomysis okayamaensis li are new to the western Korean fauna. Detailed description with illustrative figures, ecological notes and keys to species are given.

  • PDF

Morphological Redescription of the Rare Caprellid Protogeton incertus (Crustacea: Amphipoda: Caprellidae) from Korea

  • Heo, Jun-Haeng;Hong, Soon-Sang;Kim, Young-Hyo
    • Animal Systematics, Evolution and Diversity
    • /
    • 제32권2호
    • /
    • pp.153-157
    • /
    • 2016
  • Protogeton incertus Mayer, 1903 belonging to the family Caprellidae was collected from the South Sea, Korea. This species is very similar to Protogeton inflatus Mayer, but it is only distinguishable by the presence of biarticulate mandibular palp. Previous studies provided a very brief description of the species and lacked detailed illustration. In this study, the Korean Protogeton incertus is fully illustrated based on the mature and immature specimens.

라이다 측정자료의 효율적인 삼각망 알고리즘 (Efficient Triangulation Algorithm for Irregularly-Spaced Laser Scanned Data)

  • 손호웅;박은호
    • 한국측량학회:학술대회논문집
    • /
    • 한국측량학회 2009년도 춘계학술발표회 논문집
    • /
    • pp.163-167
    • /
    • 2009
  • A discussion of a method that has been used with success in terrain modelling to estimate the height at any point on the land surface from irregularly distributed samples. The special requirements of terrain modelling are discussed as well as a detailed description of the algorithm and an example of its application.

  • PDF

First Report of Rhizopus oryzae as a Postharvest Pathogen of Apple in Korea

  • Kwon, Jin-Hyeuk;Kim, Jin-Woo;Kim, Won-Il
    • Mycobiology
    • /
    • 제39권2호
    • /
    • pp.140-142
    • /
    • 2011
  • Soft rot in apple caused by Rhizopus oryzae was found for the first time in Korea. A detailed description of the specimen is given along with its internal transcribed spacer rDNA sequence. The fungus was identified as Rhizopus oryzae based on the mycological characteristics, molecular data, and pathogenicity testing.

연상 메모리를 사용한 3차원 물체(항공기)인식 (Associative Memories for 3-D Object (Aircraft) Identification)

  • 소성일
    • 정보와 통신
    • /
    • 제7권3호
    • /
    • pp.27-34
    • /
    • 1990
  • The $(L,\psi)$ feature description on the binary boundary air craft image is introduced of classifying 3-D object (aircraft) identification. Three types for associative matrix memories are employed and tested for their classification performance. The fast association involved in these memories can be implemented using a parallel optical matrix-vector operation. Two associative memories are based on pseudoinverse solutions and the third one is interoduced as a paralell version of a nearest-neighbor classifier. Detailed simulation results for each associative processor are provided.

  • PDF

Description of the Male of Alloclubionoides ovatus (Arachnida: Araneae: Amaurobiidae) from Korea

  • Kim, Byung-Woo;Lee, Won-Cheol
    • Animal Systematics, Evolution and Diversity
    • /
    • 제24권1호
    • /
    • pp.143-145
    • /
    • 2008
  • The first known males of the spider Alloclubionoides ovatus (Paik, 1976) from Korea are described with detailed illustrations, spination of each leg and trichobothrium patterns. Males have a large conductor expanded curvedly 'p'-shaped with thin membrane of distal end surrounded the linear embolus and slender embolus penetrating tegulum.

하이브리드 RSPWM 인버터의 설계 및 특성해석에 관한 연구 (A study on the design and the analysis of hybrid RSPWM inverter)

  • 오진석;김윤식
    • Journal of Advanced Marine Engineering and Technology
    • /
    • 제19권1호
    • /
    • pp.71-81
    • /
    • 1995
  • In this paper, a new speed control scheme for induction motor drives that regular sampled PWM and harmonic elimination switching pattern over the full range of output speed is presented. The proposed scheme(hybrid scheme) provides three mode and guarantees smooth voltage boost. A detailed description of the scheme, along with the relalization aspect, is described. Moreover, methods of compensating for dead time and optical transmission system of drive signal are proposed and investigated. Finally, experimental investigation of hybrid scheme is presented.

  • PDF

복기병(伏氣病)에 대(對)한 소고(小考) (A Study of Fuqibing)

  • 방정균
    • 한국의사학회지
    • /
    • 제20권2호
    • /
    • pp.93-97
    • /
    • 2007
  • In "Huangdineijing", detailed descriptions of the human physiology, pathology, causes of diseases, and symptoms can be found. The doctors who studied "Huangdineijing" interpreted "Huangdineijing" from many different points of view and such contents are being put to practical use even today. Some parts, however, are not translated clearly enough. Contents of the book of Fuqibing falls into this category. It cannot be explained why the description of Fuqibing is mentioned after Fuqibing. This study is an organization of the writer's opinion on Fuqibing.

  • PDF