• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.1
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• pp.59-64
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• 2016

This paper aims at the prototype-making of the intelligent switchgear with arc fault diagnosis function required to prevent the electrical fire. The main control unit of the intelligent switchgear consists of a single-phase power management device and a arc fault diagnosis device. The prototype of the single-phase power management device and the prototype of the arc fault diagnosis device in this paper. In the device, the cooperation function with the arc fault diagnosis device is developed to transmit the cause of the electrical fire to the remote server system.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.548-549
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• 2012

본 논문은 가정용 8kWh 에너지 저장 시스템(ESS; Energy Storage System)을 제안한다. 제안하는 시스템은 신재생 에너지원으로 태양광, 에너지저장 장치로는 리튬 배터리가 적용되는 시스템으로, 단상 계통과 병렬로 연결되어 태양광 및 배터리의 직류전력을 상용 주파수 및 전압의 교류전력으로 변환하는 제어가 가능하며 또한, 계통의 교류전력을 배터리에 필요한 직류전력으로 변환하는 양방향 시스템이다. 제안하는 ESS의 제어 및 모니터링을 위하여 추가로 HMI(Human Machine Interface) 및 HMI 제어기를 사용하였다. HMI는 ESS를 원하는 형태로 동작시킬 수 있으며, 현재 시스템의 동작모드, 전력량, 배터리 정보 등의 표시 및 장애 이력을 관리한다. 그리고 HMI, PCS, 및 BMS는 서로 CAN통신으로 정보를 교환하도록 설계하였다.

• The Transactions of the Korean Institute of Power Electronics
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• v.3 no.1
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• pp.15-22
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• 1998

The goal of this paper is to propose analyzing and evaluating method of power parameters for motor drive system with various experimental graphic screens and numerical results and to develop the proposed system. A developed system is made up 586-PC and DSP board, motor drive system, power parameters analyzing and evaluating software for windows. Power parameters are analyzed using correlation signal processing techniques based on the correlation between voltage and current waveforms. Analysis results are visualized by 3-D current coordinates, and it is compared and evaluated with conventional time/ frequency domain. To verify the validity of the proposed system, capacitor run type single phase induction motor and thyristor speed controller is used for analyzing. Power and harmonic parameters of motor drive system is analyzed and verified, with varying fire angle of thyristor speed controller, and the proposed approach is to confirm validity.