• 전기산업
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• v.10 no.3
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• pp.81-84
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• 1999

• NEWSLETTER 전기공업
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• no.99-7 s.224
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• pp.31-37
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• 1999

• 전기산업
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• v.13 no.1
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• pp.47-49
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• 2002

• NEWSLETTER 전기공업
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• no.99-9 s.226
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• pp.9-9
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• 1999

• Proceedings of the KIPE Conference
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• 2018.11a
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• pp.161-162
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• 2018

철도챠량에서 일반적으로 사용되는 상용전원은 보조전원장치(이하 SIV)로 불리는 전력변환장치로부터 공급된다. 본 논문에서는 LLC 공진형 컨버터를 적용하여 스위치의 영전압 스위칭(Zero-Voltage-Switching, ZVS)을 통해 높은 효율을 달성하고, 고속스위칭에 의해 인덕터, 커패시터, 트랜스포머와 같은 소자의 부피를 줄이고 시스템의 효율을 높여 기존의 보조전원장치보다 약 40%이상 소형 경량화가 가능한 보조전원장치에 대한 연구를 소개한다.

• Journal of the Semiconductor & Display Technology
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• v.21 no.1
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• pp.85-90
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• 2022

In this paper, an asynchronous nonvolatile memory module using a self-diagnosis function was designed. For the system to work, a lot of data must be input/output, and memory that can be stored is required. The volatile memory is fast, but data is erased without power, and the nonvolatile memory is slow, but data can be stored semi-permanently without power. The non-volatile static random-access memory is designed to solve these memory problems. However, the non-volatile static random-access memory is weak external noise or electrical shock, data can be some error. To solve these data errors, self-diagnosis algorithms were applied to non-volatile static random-access memory using error correction code, cyclic redundancy check 32 and data check sum to increase the reliability and accuracy of data retention. In addition, the possibility of application to an asynchronous non-volatile storage system requiring reliability was suggested.

• Journal of The Korean Society For Urban Railway
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• v.6 no.4
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• pp.243-248
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• 2018

The abnormally high temperature of the train part is related to train accidents and monitoring is important for safe operation of trains. In case of KTX an abnormality detecting device that detects the abnormality of the axle and scans the urban railway is installed on the railroad and when there is an abnormal heat generation, a system for automatically informing the control center is installed. The IR sensors module used in this system are depend on quick response. we have conducted a study on the fast response test method through the production of experimental equipments.