• The Transactions of the Korean Institute of Electrical Engineers
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• v.35 no.12
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• pp.567-572
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• 1986

In this paper, a new type of step motor with two degree of mechanical freedom, which is named rotary-Linear Step Motor(RLSM), is presented. Its rotor axis can perform linear and rotary motions either separately or simultaneously. This paper discribes the design of RLSM using finite element method in which the magnetic saturation effect of the iron core is taken into account. The design parameters such as torques, forces and inductances are obtained from the computed magnetic vector potentials. A new type of Rotary-Linear Step Motor was constructed. The calculated parameters agree well with measurements.

• Proceedings of the KIEE Conference
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• 1997.07f
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• pp.2207-2209
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• 1997

This Paper Presents the design automation for isolated DC-DC converters. Isolated DC-DC converts have many advantages such as protection, wide range variation, and multiple output. Prosedures consist of several steps. There are the selection of converter topology, the selection of switching devices. the calculation for the value of inductances and capacitances, and the design of transformers. We verified it with many practical examples from databooks.

• Proceedings of the KIEE Conference
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• 2005.10b
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• pp.520-522
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• 2005

This paper presents the design and analysis of the electromagnetic system such as jumping ring system. Also, we study the characteristics of dynamics for system with initial parameter. For the propose of system control,, first, we simulate the MATLAB tool solving coupled differential equations with electric parameter, inductance and mutual inductances. Therefore, we design a jumping ring system using design results, implement, and analyze the jumping ring system real situation. For the near time, we present a control process, and compare of real system and software technique.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.592-594
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• 1998

In order to analysis high frequency interference conduction in transformer, this paper constructs a equivalent network based on P.I. Fergested transformers physical model. A method of calculating self and mutual leakage inductance of windings sections is presented and a calculating example is given.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.748-753
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• 1998

Machine parameters need to measure in advance for vector control and theoretical analysis. Therefore, we present the machine parameter measurement scheme, considering stator iron loss, by the single-phase test at standstill condition. Using this method, the d-q axis inductances and the equivalent iron loss resistance in the voltage equation considering stator iron loss are easily measured. This method is simple and does not need to use complex theory and expensive equipment.

• 전기의세계
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• v.29 no.3
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• pp.185-192
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• 1980

It is revealed that duality and similarity between both capacitance and inductance systems coexist, and also that the former is more efficient than the latter in application viewpoints in time-invariant linear cases as far as both systems are concerned. This paper, using the similarity relation, proposes a new magnetics capacity concept similar to electrostatic capacity so that inductance systems may be interpreted as the corresponding capacitance systems. The new concept makes it convenient to analyze the both systems by unified approach. Finally an example demonstrates the applicability and convenience of the proposed method, through the analysis of capacitances and inductances on the transposed transmission line.

• Proceedings of the KIEE Conference
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• 2006.07b
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• pp.745-746
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• 2006

The purpose of this paper is to discuss the reasons creating the difference between inductances calculated and measured in the interior permanent magnet synchronous motor designed for the traction. Moreover, the method applied to estimate the inductance is introduced in this paper.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.448-449
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• 2018

최근, WBG 반도체 소자에 대한 연구가 활발히 진행됨에 따라 고속 스위칭으로부터 발생되는 문제점들을 해결하기 위한 여러 방안들이 제시되고 있다. WBG 반도체 소자의 안정적인 고속 스위칭을 실현하기 위해서는 게이트 드라이버 내에 존재하는 기생 인덕턴스를 최소화하는 것이 가장 중요하다. 본 논문에서는 layout의 최적화 설계를 통해 GaN FET 구동용 게이트 드라이버 내의 기생 인덕턴스를 최소화할 수 있는 방안을 제시하고 설계를 통해 만들어진 게이트 드라이버를 실험을 통해 스위칭 특성을 분석하였다.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.55 no.1
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• pp.17-19
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• 2006

This paper presents the design of an electromagnetic system such as jumping ring system, and also considers the characteristics of dynamics for system with initial parameter. For the propose of system analysis, the MATLAB tool is to solve coupled differential equations with inductances and mutual inductance. To apply a real electromagnetic system, this paper implements the jumping ring system using design parameters, and analyzes the jumping ring system with proposal step.

• Proceedings of the KIEE Conference
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• 2001.10a
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• pp.21-23
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• 2001

A design and analysis program is proposed for switched reluctance motor using an analytical method and a CAD program LabVIEW. The algorithm uses conventional permeance method, in which flux linkages, inductances and torques are calculated numerically. In order to analyze a dynamic characteristics of the motor, voltage control scheme is fallen and a single pulse operation is applied. 2 SRM models are analyzed under the given specifications and constraints. The results compared with measured data.