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신승호(S.H. Shin),장인혁(I.H. Jang),김보현(B.H. Kim),박정국(Z.G. Piao),최연옥(Y.O. Choi),정병호(B.H. Jeong),조금배(G.B. Cho),백형래(H.L. Beak) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
DC-DC converter is DC power equipment. which function is convert voltage DC to low voltage DC. Such as the DC-DC converter device, all the signal chain devices to provide a stable power supply is to maintain stable operation and high efficiency is needed in order to control the switching. In order to advantage of this high-efficiency switching power supply it of SMPS (Switching Mode Power Supply), The DC-DC converter has high efficiency. In this paper, Atmel, produced ATmegal28 RISC 8-bit micro-processor using, DC-DC converter to select a default form Buck type Converter Through circuit design, theoretical analysis and experimental characteristics through the present study.
MPPT를 적용한 독립형 태양광 발전 시스템의 베터리 충 · 방전 제어기 설계
신승호(S.H. Shin),김대승(D.S. Kim),박정국(Z.G. Piao),이강연(G.Y. LEE),김현철(H.C. Kim),김대곤(D.G. Kim),백형래(H.L. Beak) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
신재생 에너지의 일환인 태양에너지를 이용한 태양광 발전은 태양전지의 외부조건에(온도, 일사량) 대해 출력 특성이 비선형 적으로 변화되는 특성을 가진다. 따라서 외부조건에 대해 태양전지가 항상 최대 전력점에서 동작 할수 있도록 추종해주는 컨버터가 필요하다. 본 논문에서는 이러한 문제점을 해결하기 위해 MPPT(Maximum power point tracking)를 적용한 170W 독립형 태양광 발전 시스템의 베터리충 · 방전 제어 시스템에 대해서 연구된다. 제안된 컨버터는 DC-DC 플라이벡 컨버터를 사용하였고 제어 MCU(Micro controller unit)은 Atmel 사의 8bit RISC 방식의 ATmega128, 제어 알고리즘에 Pertur bation & Observation (P&O) 방식을 적용 함으로서 시뮬레이션을 통해 그 타당성을 검증 하였다.
박인준(I.J.Park),곽경남(K.N.Kwak),백형래(H.L.Beak) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
This paper is a study about motor technic of motion and feedforward control in order to shape cutting control on the machine tool. The shape error caused by delay of the servo system in the direction of radius at the time of circular cutting is reduced by feedforward control, shape error generated by the position command delay is minimized by using the acceleration/deceleration time constant after the interpolation. The study was verified to optimization of motion control on experiments of a vertical machining center of the machine tool.
박수강(S.K Park),성경민(K.M Sung),조금배(G.B Cho),오금존(G.G Oh),백형래(H.L Beak),박해암(H.A Park) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
The most common for starting a single phase induction motor is to install a starting condenser and a centrifugal switch in series with the auxiliary winding. Though this method is simple, life of single phase induction motor is short because of malfunction of a starting condenser and a centrifugal switch and efficiency improvement has limitation. In this paper, the starting characteristics of SPIM is improved by sequence voltage control strategy of auxiliary winding in removing a starting condenser and a centrifugal switch. Finally, the excellent starting performance of SPIM is shown through simulation and experimental results.
정병호,이강연,조금배,백형래,최문한 조선대학교 에너지.자원신기술연구소 2004 에너지·자원신기술연구소 논문지 Vol.26 No.1
In this paper a novel sensorless Direct Torque Control (DTC) algorithm for induction motor drive is proposed. Most of all, DTC drive is very simple in its implementation because it needs only two hysteresis comparator and switching vector table for both flux and torque control. The switching strategy of a conventional direct torque control scheme which is based on hysteresis comparator results in a variable switching frequency which depends on the speed, flux, stator voltage and the hysteresis of the comparator. The amplitude of hysteresis band greatly influences on the drive performance such as flux and torque ripple and inverter switching frequency. This new algorithm provides decoupled control of the torque and flux with constant inverter switching frequency and a reduction torque and flux ripple. It is more simpler strategy and has less mathematical operations, Compared to the classical DTC methods. Algorithm is based on imposing the flux vector spatial orientation and rotation speed, which defines the unique solution for reference stator voltage. Using computer simulation verified implementation to actually.