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홍정표(Jeng-Pyo Hong),박성준(Sung-Jun Park),홍순일(Soon-Ill Hong),김철우(Cheul-U Kim) 한국조명·전기설비학회 1999 한국조명·전기설비학회 학술대회논문집 Vol.1999 No.-
Although the switched reluctance motor (SRM) has a several advantages such as simple magnetic structure, robustness, wide range of speed characteristics and simple driving, it has a considerable inherent torque ripple and speed variation due to the driving characteristics of pulse current waveform and the nonlinear inductance profile. The high torque ripple and speed variation inhibits wide application. The minimization of the torque ripple is very important in high performance servo drive applications, which require smooth operation with minimum torque pulsations. This paper presents the new SRM torque modeling technique for the control of instantaneous torque. The SRM is modeled by the database of torque profiles for every small variation in currents and rotor angles, which is inferred from the several measured data by the adaptive neuro-fuzzy inference technique Simulation results demonstrating the effectiveness of proposed torque modeling technique are presented.
트로이선 가설 작업 로봇의 장력 및 이동 제어에 관한 연구
홍정표(Jeng-Pyo Hong),원태현(Tae-Hyun Won),김문수(Mun-Soo Kim),홍순일(Soon-Ill Hong) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
The objective of this study is development of a installed working robot for a troy cable with mobile and tension system. In this paper, an approach to designing controllers for dynamic hybrid Tension/Mobile control of a installed robot for a troy wire cable is presented. Mobile control system of robot is designed based on equation of dc motor and motion for moving robot and tension control system is designed based on equation of ac servomotor for generating torque and dynamic equation of a wire cable. The control parameters is determined by simulation in independence operation of two system.
최대 출력 제어 기법을 이용한 농형 유도 발전기 제어에 관한 연구
홍정표(Jeng-Pyo Hong),정종원(Jong-Won Jeong),원태현(Tae-Hyun Won),권순재(Soon-Jae Kwon) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
본 연구의 목적은 농형 유도 발전기를 이용한 가변속 독립운전형 풍력 발전 시스템의 최대 전력 추종 제어기법을 제안한다. 제안된 기법은 M-G 세트로 구성하여 풍력터빈의 역할을 하는 터빈 시뮬레이터를 직류전동기의 토크제어를 이용하여 구현하였다. 농형 유도발전기는 벡터제어를 기본으로 간접 벡터제어를 위하여 유도발전기를 좌표 변환하여 모델링하고 이것을 기초로 제어알고리즘을 도출하였다.
새로운 방식의 단상 인버터를 이용한 태양광 시스템 구현
홍정표(Jeng-Pyo Hong),김태화(Tae-Hwa Kim),원태현(Tae-Hyun Won),권순재(Soon-Jae Kwon),홍순일(Soon-Ill Hong),김종달 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
In this paper proposed method of maximum power point tracking using boost converter for a connected single phase inverter with photovoltaic system. The maximum power point tracking control is based on generated circuit control MOSFET switch of boost converter and single phase inverter uses predicted current control to control four IGBT's switch in full bridge. The predicted current control provide current with sinusoidal wave shape and inphase with voltage. The generation control circuit allows each photovoltaic module to operate independently at peak capacity, simply by detecting of the output power of the system. Furthermore, the generation control circuit attenuates low-frequency ripple voltage, which is caused by the full-bridge inverter, across the photovoltaic modules. Consequently, the output power of system is increased due to the increase in average power generated by the photovoltaic modules. The effectiveness of the proposed inverter system is confirmed experimentally and by means of simulation.
홍정표(Jeng-Pyo Hong),정승환(Seoung-Hwan.Jung),원태현(Tae-Hyun Won),권순재(Soon-Jae Kwon) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
Ultrasonic welder joins with a horn and a booster for amplification of the mechanical displacement. This coupling generates other resonance points at a frequency range lower than the piezoelectric material's resonance frequency. Therefore, frequency variation range through PLL control was proposed in order to prevent reaction to these resonance points.
홍정표(Jeng-Pyo Hong),홍순일(Soon-Ill Hong) 한국조명·전기설비학회 2008 조명·전기설비학회논문지 Vol.22 No.8
현재, 송전선등 전력케이블의 가설작업은 딥 측정으로 크레인에 의해 수작업에 의해 행해지고 있지만 안전과 효율적인 작업을 위해 가설작업의 자동화 시스템이 필요하다. 이러한 필요에 대하여 본 논문의 목적은 송전선 케이블의 가설을 위한 자동화 시스템의 개발이다. 본 논문은 현수형 송전 케이블과 장력발생 교류 서보진동기의 모델을 나타내고 송전케이블의 딥을 일정히 유지하기 위한 장력을 계산하는 알고리즘을 나타내었다. 현수형 송전선 특성에 기초하여 로드셀을 이용한 장력측정에 의해 송전선 가설 시스템의 구성법이 제안되었다. 가설시스템은 장력 발생장치에 교류서보 전동기를 이용하고 케이블의 장력계측 장치는 하중변환기(load cell)를 사용한다. As transmission line is installed by manual operation, it is necessary to scheme the automatic system for stringing transmission wire. For this necessity, the objective of this paper is developed automatic control system for a stringing of transmission wire. In this paper, transmission wire with suspended pattern and ac servo motor for torque generating are modeled. On the basis of wire model, algorithms to determine the reference tension is presented, so as the dip of transmission wire is keep constancy. The control scheme is proposed by the ac servo motor for torque generation and a load cell for a detected tension of transmission wire and implemented. We experimentally show that the performance of the tension response is satisfactory. And also proposed scheme verified the utilities for tension control of transmission wire.
홍정표(Jeng-Pyo Hong),이오걸(Oh-Keol Lee),이용길(Yong-Kil Lee),송달섭(Dall-Seop Song),권순재(Soon-Jae Kwon) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
In this paper a maximum power point tracking(MPPT) techniques for power of PV(photovoltaic) systems are presented using boost converter for a connected single phase inverter. On the basic principle of power generation for the PV module, algorithms for maximum power point tracking are described by utilizing a boost converter to adjust the output voltage of the PV module. Based on output power of a boost converter, single phase inverter uses predicted current control to control four IGBT's switch in full bridge. Furthermore a low cost control system for solar energy conversion using the DSP is developed, based on boost converter to adjust the output voltage of the PV module. The effectiveness of the proposed inverter system is confirmed experimentally and by means of simulation. Finally. experimental results confirm the superior performance of the proposed method.