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설계 시간 가속화를 위한 NSGA-II 알고리즘 기반 LLC 공진형 컨버터용 고주파 변압기 최적 설계 기법
차명준,박수성,전선호,김래영 대한전기학회 2024 전기학회논문지 Vol.73 No.1
This paper proposes an optimal design method to minimize the volume and losses of the frequency converter for achieving high efficiency and high density in LLC resonant converters. Specifically, we focus on reducing the volume and losses of the high-frequency transformer, utilizing the Non-Dominated Sorting Genetic Algorithm II (NSGA-II) for this purpose. The proposed method, in contrast to global search methods exploring all possibilities, efficiently acquires Pareto Set values using NSGA-II, thereby reducing design time. The design process was conducted using Matlab, and the results obtained from applying the algorithm were compared with those from global search in terms of design time and accuracy. Additionally, the optimal design points were validated through experimentation.
수용액으로부터 인산염 제거를 위한 경제성이 뛰어난 흡착제 개발 -
이충현, 차명준, 이승목 가톨릭관동대학교 대원환경연구소 2017 보건환경연구논문집 Vol.22 No.-
In this study, a novel La-bentonite powder (Al-Bnt) and alginate immobilized La-Bentonite beads (La-Bnt-AB) were synthesized and applied for the treatment of aqueous phosphate. The phosphate removal behaviour of adsorbents were evaluated by batch experiments as a function of various parameters such as pH, initial concentration, contact time, adsorbent dose. The adsorption isotherm studies by Langmuir monolayer model showed maximum phosphate uptake capacity of 13 and 44 mgP/g for La-Bnt and La-Bnt-AB respectively. The kinetic studies confirms that the adsorption of phosphate by La-Bnt-AB follows a pseudo-second-order model. The applicability of the synthesized adsorbents was found promising adsorbents in the remediation of phosphate contaminated water.