• 전력전자학회:학술대회논문집
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• 전력전자학회 2003년도 춘계전력전자학술대회 논문집(1)
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• pp.216-222
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• 2003

Today we have excellent motor drive system using high frequency carrier PWM control voltage source inverter in the other hand, we have met serious problems caused by high frequency switching. PWM Cyclo-converter called Matrix converter is expected as the new strategy Possible to improve these problems and add some more convenient features suitable for new drive system. in this Paper, we will introduce the background, features and outline of this converter, and additionally introduce some remarkable activity on this converter

• 전력전자학회논문지
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• 제15권6호
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• pp.477-486
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• 2010

최근 PCS 시스템은 고집적화, 고효율화 그리고 고밀도화 되는 추세에 있다. 이러한 조건을 만족하기 위하여 두개의 공진탱크를 갖는 LLC 공진형 인버터와 LF(Low Frequency) Cyclo-converter로 구성된 PCS를 제안하였다. 본 논문에서는 제안된 회로의 동작모드와 이론에 대해 서술하였고 400W급 시제품을 제작하고, 계통전압(110Vac 60Hz)에 연결하여 실험 적용하였다.

• Journal of Power Electronics
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• 제9권2호
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• pp.198-206
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• 2009

An algorithm is developed that enables a single-phase matrix converter (SPMC) to perform functions of a generalized single phase power electronics converter such as acting as a frequency changer, rectifier, inverter, and chopper. This reduces the need for new converter hardware. The algorithm is implemented first on computer simulation software Orcad Capture CIS version 9.1. Simulation results are presented for five types of converters with a control input variable that decides the 1) type of converter and 2) type of output waveform. The simulated results verify the working and operation of a generalized converter based on SPMC. Simulated results are verified with experimental results. Hardware design is obtained using readily available ICs and other components. The trigger circuit has been tested qualitatively by observing waveforms on CRO. The operation of the proposed system has been found to be satisfactory.

• Journal of Power Electronics
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• 제12권6호
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• pp.974-981
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• 2012

A FPGA based delta modulated single phase matrix converter has been developed that may be used in both cyclo-converters and cyclo-inverters. This converter is ideal for variable speed electrical drives, induction heating, fluorescent lighting, ballasts and high frequency power supplies. The peripheral input-output and FPGA interfacing have been developed through Xilinx 9.2i, to generate delta modulated trigger pulses for the converter. The controller has been relieved of the time consuming computational task of PWM signal generation by implementing the method of trigger pulse generation in a FPGA by using Hardware Description Language VHDL in Xilinx. The trigger circuit has been tested qualitatively by observing various waveforms on an oscilloscope. The operation of the proposed system has been found to be satisfactory.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.200-207
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• 2003

Today we have excellent motor drive system using high frequency carrier PWM control voltage source inverter with vector control strategy. In the other hand, we have met serious problems caused by high frequency switching. PWM Cyclo-converter called Matrix converter is expected as the new strategy possible to improve these problems and add some more convenient features suitable for new drive system with system integration. In this paper, we will introduce the background of this development and features of this converter from our research, additionally introduce remarkable active promotions for this converter as a survey.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 추계학술대회 논문집 학회본부
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• pp.388-393
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• 1988

New circuit D-Q transformation concept is introduced to analyze AC converters such as inverters, rectifiers and cyclo-converters with ease. The equivalent linear time invariant circuit is obtained by substituting switches with equivalent turn-ratio variable transformers and changing balanced AC reactors into equivalent DC reactors combined by gyrators. This circuit enables us to utilize the powerful linear system analysis techniques such as Laplace transform otherwise which could not be applied to the time varying switching systems. Direct substitution of switches of DC converters with transformers is shown as a preliminary. Then the modeling procedure is shown for a controlled rectifier-inverter circuit. Finally an analysis example is proposed for a buck-boost inverter and the result is compared with the conventional approach. This approach is applicable to all AC converter families to determine the AC transfer functions and the DC operating points. It is identified that the switching systems are equivalent to the RLC filter circuits with transformers and gyrators.

• 전력전자학회논문지
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• 제15권1호
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• pp.60-68
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• 2010

최근 PCS(Power Conditioning System)는 고효율, 고 전력밀도 및 고 기능화를 통해 고집적화 추세에 있다. 이러한 요구를 만족시키기 위해 LLC 공진인버터와 LF 사이클로 컨버터로 구성된 회로를 제안했다. 동작분석 및 1kW 시제품을 제작하여 110Vac, 60Hz 전원계통연계실험 통해 적용 가능함을 보였으며 이에 대한 실험결과를 서술하였다.

• 한국산학기술학회논문지
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• 제11권12호
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• pp.4975-4983
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• 2010

본 논문은 전력전자회로에서 많이 사용되고 있는 가장 범용적이고 강력한 시뮬레이터인 PSPICE와 MATLAB에 적용하여 소자를 모델링하여 보다 쉽게 이해하고, 다양한 제어기술을 적용시킬 수 있도록 미시적인 IGBT, 거시적인 IGBT, PWM 발생기 그리고 유도 전동기를 라이브러리화 하여 모델링의 타당성을 해석하였다. 미시적인 IGBT 모델의 소자특성을 실험을 통해 모델링의 정확성을 입증하였으며, 거시적인 IGBT모델은 사이클로 컨버터와 유도 전동기의 부하를 가진 전압형 PWM 인버터에 적용시켜 시뮬레이션 하였다.