Jo Aug 4, 2021
The research team led by Kim Ryul, a researcher at the Faculty of Electrical Engineering, has developed metallic oxide lightning arrester for high voltage based on the domestic resources, thus contributing to the regular operation of electric equipment.
The non-interval metallic oxide lightning arrester is made by sintering the mixture of zinc oxide and other oxides such as arsenic oxide, aluminium oxide at over 1 150℃. The voltage degree of nonlinear resistance of the metallic oxide lightning arrester is over 318V/mm.
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Jo Jul 30, 2021
July 30th is the day when the Law on Sex Equality was proclaimed in the Democratic People’s Republic of Korea.
The women professors and the researchers of our university are also greeting the significant day with ecstasy and romance as the patriotic scientists, and turning one of the wheels of the revolutionary chariot just like all others in the country.
Among them are Dr. associate Prof. Kwon Hye Yong, the head of a laboratory in the Faculty of Electrical Engineering, who has chosen untrodden and painstaking career of scientific research to contribute to the development of the electrical industry for almost 30 years, Dr. associate Prof. Jang Kyong Wol, a researcher of the Robotics Institute who has devoted to modernizing the mechanical industry some 30 years like a day since she graduated from the university, Mrs. Ri Hye Suk, a researcher of the Faculty of Electronics, who has become distinguished in her 40s by her great research in solar energy, and Mrs. Pak Yon Sil, an English teacher who has created new English teaching methods to improve students’ foreign language.
Candidate Acad. Prof. Dr. Choe Sun Yong, a teacher in the Faculty of Information Science and Technology says as follows, doing all her best to leave her beautiful trace on the history of the fatherland.
“The certificates of candidate academician, professor and doctor bring me back a lot of memories. Without the motherly Party, who discovered my exceptional talent for engineering and fostered it, how could I become an honorable woman as today?
Thanks to the Party, our women, who lamented over the miserable plight of colonial women, singing the song of Balsam in the past, have become the masters of the country, patriotic working people and the scientists who exercise their rights legitimately, singing the songs such as A Girl on a Steed, Push Back the Frontiers of Science”
This is an open-hearted description of not only Dr. Choe Sun Yong but also all the women professors and the researchers of our university.
It is needless to say that the warm care of the motherly Party leads the ordinary women to be the heroines of the country, doctors and innovators, and their patriotic lives will be ever glorious.
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Jo Jul 15, 2021
Pak Se Yang, a researcher at Science Engineering Institute, reported a paper “Senseless vector control of PMSM with parameter error compensation” in SCI magazine "International transactions on Electrical Energy System"31(5).
In the paper, he carefully analyzed the drawback of preceding studies that error compensation algorithm is rather complicated and inefficient.
Based on it, he proposed a new method for enhancing the estimation and control correctness by estimating the current value based on motor model and compensating the element made by parameter error separately in the error compared with measured value.
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Jo Jul 14, 2021
Yang Won Chol, a researcher at the Faculty of Materials Science and Technology, reported a paper “A quantitative and intuitive materials selection MADM method based on quadrant circular constellation graph” in the SCI magazine "Proc IMechE Part L: Journal of Materials: Design and Applications".
In the paper, he found the drawback of the traditional semi-circular constellation graph and proposed a new quadrant circular constellation graph. Based on the idea of possibility for applying it to intuitive representation of multi-criteria decision-making (MCDA), he proposed a new quantitative and intuitive materials selection MADM method based on quadrant circular constellation graph.
He made it possible to select material in a quantitative and intuitive way by representing the ability of materials not only in a quantitative way but also in an intuitive way on a 2D plane.
The proposed method, which is applied to select the best magnesium alloy material for automotive wheels and is proved to be effective by comparing with preceding methods, proposed a new quantitative and intuitive method and tool for material selection problems arising in reality, thus experts estimated that the method is very interesting and can be of a new contribution to its field.
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Jo Jul 7, 2021
The research group including Kim Ryul, a researcher in the Faculty of Electrical Engineering contributed to the development of ultra high voltage suspension insulator based on the domestic resources.
It is proved that the newly developed plastic alumina insulator can be used as ultra high voltage suspension insulator, with its insulation property fully assured and all the characteristic features such as bending strength, tensile strength and thermal break down temperature much higher than feldspar insulator which is currently being used.
The bending strength is over 160MPa and tensile strength over 55MPa and thermal break down temperature over 182℃.
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Jo Jun 17, 2021
Research team led by Ma Min Gwon, head of a department, Faculty of Information Science and Technology, improved the performance of Multi lingual OCR that changes text images into editable document and thus enhanced the level of making data input process IT-based and scientific.
This Multi lingual OCR, which has already been introduced into several units and proved greatly beneficial, automatically discriminates and recognizes languages including English, Russian, Chinese and Japanese and its recognition rate is above 99% on an average.
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