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직 · 병렬 능동 전력필터 시스템을 이용한 불평형 전원전압 보상
강민형(Min-Hyung Kang),김영조(Young-Jo Kim),김영석(Young-Seok Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
본 논문에서는 고조파 보상과 역율 보상을 실시하고, 전원 전압 불평형시 보상을 실시하는 직 · 병렬 능동전력필터에 관하여 연구하였다. 직혈형 능동전력필터에서는 고조파에 대한 보상 전압만을 발생하여 제어하고, 병렬형 능동전력필터에서는 역율에 대한 보상하는 잔류만을 발생하여 제어한다. 또한, 불평형 전원 전압에 대한 보상은 직렬형 능동전력필터에서 실시하며, 고조파 보상과 역율 보상은 성능함수에 의해 계산되어지며, 불평형 전원 전압 보상은 대칭 좌표법을 이용하여 계산되어진다. 제시된 실험 결과들은 알고리즘의 타당성과 유효성을 검증한다.
강민형(Min-Hyung Kang),양이우(lee-Woo Yang),김영석(Young-Seok Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper presents control algorithms for unified active power filter. The algorithm is based in the performance function. The performance function is defined, and the compensation voltage reference is calculated for harmonics voltage and the compensation current reference is calculated for power factor. The proposed control algorithm can be applied to 3-phase 3-wire system and has a superior compensation characteristics for both harmonic current sources and harmonic voltage sources.
직ㆍ병렬 능동 전력필터 시스템을 이용한 불평형 전원전압 보상
姜旻衡(Min-Hyung Kang),金榮石(Young-Seok Kim) 대한전기학회 2007 전기학회논문지 Vol.56 No.4
This paper suggests of a 3-phase 3-wire unified active power filter. The system is composed of a series active power filter and a parallel active power filter. The proposed series active power filter compensating unbalance source voltage and current harmonics of the parallel active power filter improves power factor. The proposed algorithm which improves for power factor and harmonic reduction are calculated by the performance function, and which compensates for the unbalanced source voltage is calculated based on the symmetrical component analysis. We composed a combined system of the series active power filter and parallel active power filter to confirm a validity of the proposed control methods. The effectiveness of the proposed algorithm is confirmed by the experiments.
지식이전행위, 어떻게 측정해야 하나? -제공자와 수용자의 관점 비교
강민형 ( Min Hyung Kang ) 한국지식경영학회 2011 지식경영연구 Vol.12 No.2
This study examined the influence of the antecedents of knowledge transfer from both the knowledge source`s and recipient`s perspectives using a social network survey. Prior research usually focused on either perspective of the knowledge source or recipient, thus could not include both. Analyzing the responses from 335 R&D employees of the five firms, the study showed that all antecedents of knowledge transfer-reward, reciprocity, subjective norm, and perceived behavioral control-are influential on knowledge transfer from the knowledge source`s perspective. However, from the knowledge recipient`s perspective, perceived behavioral control was influential on the quality of knowledge transfer and subjective norm was on the number of knowledge recipients. Expected reward and reciprocity did not show significant influence. This study proved that the necessity of considering both the knowledge source`s and the recipient`s perspectives when measuring knowledge transfer and the importance of intrinsic motivations, such as subjective norm and perceived behavioral control.
강민형 ( Min Hyung Kang ),이재남 ( Jae Nam Lee ) 한국지식경영학회 2015 지식경영연구 Vol.16 No.1
Employees’ knowledge contribution is one of the critical activities that maximize internal capability of the firm and facilitate organizational innovation by sharing scattered internal knowledge. This study integrates antecedents of knowledge contribution based on the theory of planned behavior(TPB). Utilizing TPB as a theoretical framework, expected reciprocity, subjective norm, and self-efficacy’s direct effects on knowledge contribution were assessed. Additionally, interaction effects among expected reciprocity, subjective norm, and self-efficacy were explored. As the results of analysis, all the antecedents significantly influenced knowledge contribution. Interestingly, when the knowledge source’s self-efficacy was high, the influence of expected reciprocity on knowledge contribution was decreased. Similarly, when the knowledge source’s subjective norm for knowledge contribution was high, expected reciprocity’s effect was weakened. This implies that when facilitating knowledge contribution, interaction effects among antecedents of knowledge contribution, as well as their direct effects, should be considered.