• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.89-91
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• 2005

In This paper the convertor topology using single diode bridge rectifier for the now two-phase switched reluctance motor is proposed. The single diode bridge rectifier is supplied by the Ac voltage source. The nonlinear model of two-phase SRM is implement by maxwell and result show the photographic.

• 전력전자학회논문지
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• 제11권1호
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• pp.90-96
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• 2006

본 논문은 단상 SRM의 고역률 구동에 관한 연구이다. 단상 SRM은 구조가 단순하고, 견고하며, 전력회로가 간단하고, 고속운전특성이 우수하다. 다이오드 정류기와 필터용 링크 커패시터로 구성된 종래의 단상 SRM 구동방식은 대용량 커패시터의 충 방전 전류에 의해 역률이 크게 저하되는 문제가 발생한다. 본 논문에서는 부가적인 능동회로가 없는 1단방식의 고역률 SRM 구동드라이브와 스위칭 토플로지를 제안한다. 제안한 구동드라이브와 스위칭 토플로지는 다양한 수치시뮬레이션과 마이크로 콘트롤러기반의 단상 SRM의 구동실험을 통해 그 타당성을 입증하였다.

• 전기학회논문지
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• 제58권8호
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• pp.1519-1525
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• 2009

This paper presents a novel passive converter for single phase SRM. The proposed passive converter has additional passive power circuit which is consisted by three diodes and one capacitor in the front-end of conventional asymmetric converter to supply a high negative bias during demagnetization. The high negative bias can reduce the demagnetization time and negative torque from tail current in single phase SRM. So, It can extend positive torque region by the extended turn-off position. In this paper, the structure and operating modes of a novel passive converter are introduced with mathematical model. The proposed single phase SRM using passive converter is verified by the computer simulation and experimental results.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.103-106
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• 2007

This paper presents single-phase SRM drive system with single-stage high power factor and low torque ripple. Single-phase SRM has simple mechanical and electrical structure, robust and high speed operation characteristic. But conventional SRM drive with diode bridge rectifier and filter capacitor has a low power factor because of short charge time of capacitor. Therefore, this paper presents a novel single-phase SRM drive with single-stage structure circuit, which can improve the power factor and reduce peak torque ripple. A novel switching topology is presented base on mathematical analysis. The novel drive method is verified by simulations and experiments.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 B
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• pp.805-806
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• 2006

Single phase switched reluctance motor has a merit in practical use because it has simple operating drives and control systems, very high energy density per unit volume comparing with three phase SRM. But it must have a starting device. This paper presents a single phase SRM model with a stepped rotor pole, so as to reduce the torque ripple. Also it is simulated the designed prototype model by FEM for the prediction of characteristics.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.67-69
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• 2005

Single phase switched reluctance motor lias a merit in practical use because it has simple operating drives and control systems, very high energy density per unit volume comparing with three Phase SRM. But it must have a starting device. This paper presents a single phase SRM model with a stepped rotor pole, so as to reduce the torque ripple. Also it is simulated the designed prototype model by FEM for the prediction of characteristics

• 한국자기학회지
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• 제27권2호
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• pp.70-75
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• 2017

단상 SRM은 자기동이 어려운 관계로 다양한 방법으로 자기동을 실현시키려는 연구가 진행되고 있다. 보조자석을 사용하거나 보조극 등을 만들어 자기동을 실현시키는 방법들이 연구되고 있다. 최근에 회전자 형상에 변화를 주어 기동할 수 있는 방법이 제시되었다. 이는 회전자 형상에 변화를 주어 부분적으로 자기포화 정도를 다르게 하여 자기동을 실현하는 방식이다. 본 논문에서는 자기 포화 영역을 갖는 단상 6/6 SRM의 자기구조를 해석하고 기존의 자기구조를 개선하는 것을 목적으로 한다. 이 자기 해석을 위해 유한요소법 해석 프로그램인 FLUX2D를 사용하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.88-90
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• 2001

This paper proposes a driving scheme for 6/6 single-phase SRM. The driving scheme is very simple and inexpensive. By use of this scheme, simple power devices based on low switching losses enable to high efficiency SRM drive. Starting, One of the main problem in single-phase SRM is overcome by a new starling algorithm with one hall sensor and a parting magnet. The proposed single-phase SRM has a high efficiency and robust drive characteristics compared to that of a universal motor.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.80-82
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• 2004

The single phase switched reluctance motor(SRM) is more simpler and robust in the structure than poly phase SRM. It has the merits that it reduces the switching elements and the energy density per volume is very high. Recently, it has been researched and developed in various types and starting method due to the technique of power electronics and the computer added design. This paper presents a analytical representation of the phase inductance of a single phase SRM, as function of position and current, taking into account the non-linearity of the magnetic circuit. the method is based on Fourier series expansion. Analytical expressions for the calculation of instantaneous phase inductance, flux linkage, coenergy and electromagnetic torque as a function of rotor position and winding currents are derived.

• Journal of Advanced Marine Engineering and Technology
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• 제31권8호
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• pp.975-982
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• 2007

The single-phase switched reluctance motor(SRM) drive requires DC source which is generally supplied through a rectifier connected with a commercial source. The rectifier is consist of a diode full bridge and a filter circuit. Usually the filter circuit uses capacitor with large value capacitance to reduce ripple component of DC power. Although the peak torque ripple of SRM is small, the short charge and discharge current of the filter capacitor draws the low power factor and system efficiency. A modified single phase SRM drive system is presented in this paper, which includes drive circuit realizing reduction of torque ripple and improvement of power factor. In the proposed drive circuit, one switching part and diode which can separate the output of AC/DC rectifier from the filter capacitor is added. Also, a upper switch of drive circuit is exchanged a diode in order to reduce power switching device. Therefore the number of power switch device is not changed, two diodes are only added in the SRM drive. To verify the proposed system, some simulation and experimental results are presented.