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신경회로망을 이용한 평면좌표계형 로보트구동용 교류서보전동기 제어기
김평호(Kim pyoung-ho),서진연(Seo jin-youn),김대곤(Kim dae-gon),이강연(Lee gang-youn),백형래(Baek hyung-lae) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper describes the controller for the improving speed control the AC servo motor. The microprocessor provides an output to the difference in command. The servo system improves the characteristics of speed control. When the motor is<br/> running at the same speed as set by the reference signal, the speed encoder also provides a signal 0 the same frequency. Thus, the microprocessor controlled digital techniques enable to realize the flexible performance and control which was possible with time constant. We can know that PI control using neural networks by 80196 can control efficiently speed of AC Servo motor. Finally expenmental results prove excellent performance of this control system. The system can be adaptable to CNC machine.
확장된 Luenberger 관측기를 이용한 유도전동기 회전자 자속추정
정삼용(Sam-Young Jeong),최연옥(Youn-Ok Choi),조금배(Geum-Bae Cho),백형래(Hyung-Lae Baek),김동휘(Dong-Hui Kim),서진연(Jin-Yeun Seo),신사현(Sa-Yeun Sin) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
In this paper, authors propose a new nonlinear rotor flux observer for rotor field oriented control of an induction motor which is designed based on theory of the extended Luenberger observer(ELO), one of a nonlinear state observer. The proposed rotor flux observer is derived from the 2 phase model of induction motor by the theory of ELO. The simulation results taken under the varying condition of rotor resistance and load torque show fast convergence of estimated rotor flux and high performance of 1M drive system is acheived 표 experiment
원칩마이컴을 이용한 실시간 데이터 저장을 위한 알고리즘 설계
신사현(Sa-Hyun Shin),김기범(Ki-Bum Kim),조금배(Geum-Bae Cho),백형래(Hyung-Lae Baek),서진연(Jin-Youn Seo),최낙일(Nak-Il Choi) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
In This paper describes on the development of detecting power using Microprocessor. The detecting power system is composed of main controller system and analyzing software. The system detected voltage, current, temperature, leakage current and its saved in ROM. This system applies the 'AT89C52' to CPU and 'AM29F040B' used a memory to save the data.
태양광 발전시스템의 최대전력추적을 위한 DC/DC 컨버터 제어
최연옥,서진연,장용해,정삼용,조금배 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2
Solar energy converters were used to convert the electrical energy from the solar arrays to a stable and reliable power source. The object of this paper is to analyze and design DC/DC converters of different types in a solar energy system in order to investigate the performance of the converters. A simple method which combines a discrete time control and a PI compensator is used to track the maximum power point of the solar array. The system is kept to operate close to MPPT's thus the maximum possible power transfer from the solar array is achieved. Experimental tests were carried out for buck, boost and buck-boost converters using a simple maximum power point tracking algorithm.
최연옥,이열선,서진연,한승조,조금배 조선대학교 동력자원연구소 1997 動力資源硏究所誌 Vol.19 No.1
A complete computerized system for the characterization and performance testing of photovoltaics(PV) modules under natural sunlight and ambient condition was designed. I-V characteristics of PV module provides on essential diagnostic means in assessing the performance and internal cell parameters of PV module depends on its basic materials, manufacturing technology and operating environmental conditions. I-V curves derived from PV modules refect to a large extent the physical properties and their expected performance. In this paper, Electrical performance measurement and evaluation methods for solar cell module by MOSFET variable Load were studied. Also, Mathematical model and theory of solar cell associated with the photovoltaic effect has been discribed.
최연옥,서진연,조금배 조선대학교 에너지.자원신기술연구소 1997 에너지·자원신기술연구소 논문지 Vol.19 No.2
The main problems in photovoltaic performance measurement arises from the fact that solar cells have a highly selective spectral response and are, therefore, very sensitive to the spectral composition of the incident radiation. Outdoors, this varies considerably with location, weather, time of year and time of day, Indoors, it depends on the type of simulator used and it can change as the equipment ages. Unless measurement procedures take account of these variations and other difficulties, such as the marked temperature dependence of solar cell, the results can be grossly erroneous. Performance rakings of the same module by laboratory have been know to disagree by as much as 20%.