• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 B
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• pp.1197-1199
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• 2001

TFM(Transeverse Flux Motor) is switched reluctance motor with new structure of novel design concept based on the high efficiency and power density compare to induction motor used on wide industrial field. This paper realized FWM asymmetric converter drive control system for TFM using IGBT and DSP.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.86-88
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• 2003

The efficiency of electric machine is important due to increase of interest about energy saving. Single Phase Line Start Permanent Magnet Synchronous Motor has high efficiency and power factor. LSPMSM offer a high efficiency as compared induction motor which are used in the home appliance. The analysis and design of LSPMSM is difficult because of unbalanced rotating magnetic field, nonlinear characteristics and rotor saliency. To consider these effects, F.E.M(Finite Element Methods) is coupled equivalent circuit methods. In this paper, a methods of analysis and design using F.E.M and equivalent circuit is represented.

• 한국산업융합학회 논문집
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• 제3권1호
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• pp.9-15
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• 2000

This paper presents a implementation of digital motion control system for induction motor vector drives using the 16bit DSP TMS320F240. The DSP controller enable enhanced real time algorithm and cost-effective design of intelligent controllers for motors which can be yield enhanced operation, fewer system components, lower system cost, increased efficiency and high performance. The system presented are speed and current sensing, sine look-up table and generated SVPWM by fully integrated control software. The developed system in a implementation are shown a good speed response and motion control characteristic results, and high performance features in general purposed 2.2[kW] machine. The system can be adapted variform motor drive system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.1262-1270
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• 2010

The next generation domestic high speed railway system is a power dispersed type and uses vector control method for motor speed control. Nowadays, inverter driven induction motor system is widely used. However, recently PMSM drives are deeply considered as a alternative candidate instead of an induction motor driven system due to their advantages in efficiency, noise reduction and maintenance. In this paper, the maximum torque control approach is presented for the IPMSM drives with reluctance torque. The applied control method uses maximum torque control per ampere technique. Simulation programs based on Matlab/Simulink are developed. Finally the designed system is verified by simulation and their characteristics are analyzed by the simulation results.

• 한국인터넷방송통신학회논문지
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• 제22권4호
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• pp.127-132
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• 2022

철도차량에 탑재된 전장품 중 가장 큰 하중을 차지하는 것은 주변압기로 낮은 운전 주파수(60Hz)로 인해 전력밀도가 0.2~0.4 MVA/ton 정도로 낮아 경량화에 중요한 요소로 작용하고 있다. 따라서 철도차량용 주변압기를 개선하기 위해 몰드 변압기, 반도체 변압기 등에 관한 연구가 국내외적으로 활발히 진행 중이다. 한편 국내외 철도차량에 대부분 적용되는 견인전동기로 최근에는 유도전동기를 대체하여 영구자석 동기전동기(PMSM)를 적용하려는 시도가 이루어지고 있다. 영구자석 동기전동기(PMSM)는 유도전동기에 비해 높은 출력밀도와 효율 확보가 가능하지만 제작에 필요한 재료의 가격이 비싸고 설계가 유도전동기 대비 다소 어렵다는 단점이 있다. 이러한 문제점을 고려하여 본 논문에서는 소형 경량화가 가능한 반도체 변압기를 적용하고, 철도차량의 경량화, 고효율화 등의 요구사항에 맞춰 구조가 간단하면서 회전수가 높고 고토크, 저비용인 SRM을 적용할 수 있는 연구내용을 제안하고자 한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.212-214
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• 2006

Air Management System is composed by Pump, Fan, Compressor and Blower In general their performances depend on the capability of the motor, power converter device and controller. Especially, it should be noticed upon designing Air Management System using for Fuel Cell System, that Pump, Fan, Compressor and Blower satisfy the condition of the high performance, high efficiency, high density and reasonable price considering the safety and Economic Efficiency. In order for this, it should be studied that which kind of Motor is the most suited for Air Management System for Fuel Cell, such as Induction Motor, Brushless DC Motor, and Switched Reluctance Motor which is widely using in industry. This paper presents the designing and manufacturing of Outer Rotor Type BLDC Motor and Driver for Air Blower of Air Management System. Experimental results from a laboratory prototype arc presented to validate the feasibility of the proposed Air Blower Motor and Driver.

• 전기학회논문지P
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• 제54권1호
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• pp.20-29
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• 2005

This paper presents an implementation of efficiency optimization of reluctance synchronous motor (RSM) using a neural network (NN) with a direct torque control (DTC). The equipment circuit considered with iron losses in RSM is analyzed theoretically, and the optimal current ratio between torque current and exiting current component are derived analytically. For the RSM driver, torque dynamic can be maintained with DTC using TMS320F2812 DSP Controller even with controlling the flux level because a torque is directly proportional to the stator current unlike induction motor. In order to drive RSM at maximum efficiency and good dynamics response, the Backpropagation Neural Network is adapted. The experimental results are presented to validate the applicability of the proposed method. The developed control system show high efficiency and good dynamic response features with 1.0 [kW] RSM having 2.57 inductance ratio of d/q.

• 조명전기설비학회논문지
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• 제23권7호
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• pp.49-56
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• 2009

A new class of electronically commutated brushless motors, the flux-switching motor (FSM), is gradually emerging for use in power tools and household appliances especially fan and pump application thanks to green policies, This motor offers such advantages as high-power density and relatively high efficiency compare to induction motors, and low cost and simple motor structure compare to the BLDC motor. This paper presents the principle of the FSM and design of the 12/6 pole FSM drive system for fan application. Test results of the prototype motor are provided to verify the validity of the fan application with a TMS320F2812 DSP and inverter.

• 전력전자학회논문지
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• 제8권3호
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• pp.211-220
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• 2003

본 논문은 직접 토오크 제어 (Direct Torque control, DTC)를 이용한 릴럭턴스 동기전동기 (Reluctance Synchronous Motor, RSM)의 최대 효율 제어에 관한 연구이다. 릴럭턴스 동기전동기의 등가모델 해석에 있어서 철손의 영향을 고려하여 이론적으로 분석하였으며, 최대효율제어를 위하여 토크 전류와 여자전류 사이의 최적 각을 유도하였다. 릴럭턴스 동기전동기의 경우는 자속이 전류에 비례하므로 유도전동기와는 달리 자속레벨을 제어하면서 토오크의 동특성을 유지할 수 있다는 특징을 가지고 있으며, 제시된 연구에서는 릴럭턴스 동기전동기의 이러한 특징을 적용하여 직접 토오크 제어의 장점인 빠른 토오크 응답특성을 유지하면서 최대 효율 제어가 이루어지도록 한다. d/q 릴럭턴스 비가 2.57인 1.0 Kw 릴럭턴스 동기전동기를 이용하여 실험을 통해 제안된 방법들의 정당성을 입증하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.131-134
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• 2002

The optimum design technology using combind F.E.M and eauivalent circuit is so fast and accurate that it can be applied to the optimum rotor design of an inverter-fed induction motor in high efficiency motor making industry. The optimum characteristics fer a rotor slot model of a 3 phase inverter-134 nduction motor was previously verified by a time-step F.E.M. In this paper, four verification models with the design variables near the optimum point are designed to chech whether the characteristics of a slot model presented is not less than those of the near models. The outputs of whole models are analyzed in a time-step Finite Element Method and compared in the experimental test. The economical and efficient selecting method of design variables fur the computer simulation and experimental test is presented in order to assure the optimum point.