• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.111-116
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• 2002

With the proliferation of nonlinear loads such as personal computers in an educational office building, high neutral harmonic currents have been observed. High neutral currents in three-phase four-wire distribution power systems can cause overloaded neutral conductors, overloaded transformers, voltage distortion, common mode noise, and malfuntion of protective equipment. On-site measurements of harmonic currents and voltages were made and the corresponding equivalent circuits was developed. The circuit model under study was simulated numerically and graphically through the use of the software MATLAB.

• Proceedings of the KIPE Conference
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• 2009.11a
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• pp.252-255
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• 2009

This paper proposes a new loss minimization controller (LMC) for induction motor drive. The proposed LMC presents a strategy to minimize the total power losses of induction motor (IM), which is based on simplified equivalent circuit and simplified model of IM. The proposed controller using the field oriented control (FOC) method is to determine an optimal rotor flux for obtaining the minimum total power losses and higher efficiency. Simulation and experimental results are given to validate the effectiveness of the proposed method.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 1999.02a
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• pp.93-96
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• 1999

This paper deals with the quench characteristic analysis in high-Tc superconducting synchronous motor of five to six hundred watts capacity. First, the magnetic field distribution and ac losses of high-Tc superconducting motor with the additive flux damper circuit was derived and computer simulation was performed with the equivalent model using FEM. The simulation results show that the quench state lasts for about 0.3 seconds.

• 한국정보통신설비학회:학술대회논문집
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• 2003.08a
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• pp.172-174
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• 2003

In this paper, we analyze the traveling-wave electro-absorption modulator (TW-EAM) in consideration of the microwave feed-line. The TW-EAM is analyzed by using the equivalent circuit model. The microwave feed-line isanalyzed by momentum method. In a view point of microwave characteristics, we present the effect of the structure and the length of microwave feed-line.

• Proceedings of the IEEK Conference
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• 2000.11b
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• pp.108-111
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• 2000

The electrical characteristics of MQFP packages have been measured in RF regime. The s-parameter of the lead frame has been measured using the test fixture on which the do-capped package was mounted. A simple lumped equivalent circuit modeling of the lead frame and the test fixture can provide reasonable model parameters up to the frequency of 200 MHz.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.462-463
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• 2018

본 논문에서는 환경조건에 따른 18650 고용량 원통형 배터리의 안정성과 신뢰성을 확보하기 위해, 상온 및 저온에서 전기적 특성 실험을 실시하였다. 배터리 등가회로 모델을 기반으로 온도조건에 따라 내부 파라미터를 비교 및 분석하였으며, 이를 통해 배터리의 특성 변화를 나타내었다.

• ETRI Journal
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• v.28 no.3
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• pp.383-385
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• 2006

A new meander-line antenna consisting of two open-ended strips is proposed for a compact and broadband UHF radio frequency identification tag. An equivalent circuit model for the proposed antenna is derived and used to perform a simple and wideband impedance match to an arbitrary complex impedance of a tag chip without any additional matching network. The performance of the proposed antenna is validated by comparing calculated and measured results, which show good agreement.

• Proceedings of the IEEK Conference
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• 2000.07b
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• pp.575-578
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• 2000

The method for immittance conversion and its mathematical properties are discussed. Some design methods for complex multilayer embeddeding networks are proposed. Furthermore, as an application of multilayer embedding networks, the equivalent circuit model of a blood vessel is shown with its simulation results.

• Proceedings of the KIEE Conference
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• 2005.07c
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• pp.2300-2302
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• 2005

Metal-Semiconductor-Metal type photodetector was fabricated with AlGaAs/InGaAs Quantum Well FET structures using simplified processing steps. The DC and RF responses were measured by 850nm wavelength injection laser. A DC responsivity in the quasisaturated regime was 0.45 A/W in CW measurements, and a bandwidth measured using a 850nm 40 ps pulsed laser was 16GHz. An electrical equivalent circuit model was extracted from measured S-parameter.

• Journal of Advanced Navigation Technology
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• v.14 no.6
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• pp.1002-1009
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• 2010

I made the axon to the electrical transmission model and then constructed electrical equivalent model using Kirhhoff's current law and voltage law in this paper. I calculated various axon parameters in order to analyze the electrical potential hehavior versus minute distance chang of axon. The transmission velocity of unmyelinated nerve is proportional to square root of axon diameter, while that of myelinated nerve is directly proportional to its diameter. Because the transmission of myelin sheath is independent of voltage unlike unmyelinated sheath, the Hodgkin-Huxley model across the membrane is not so precise.