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전원측 리액터 불평형을 고려한 전압형 컨버터의 전류 보상 제어기 구현
전지용,조유환,이근홍 한국산학기술학회 2004 한국산학기술학회논문지 Vol.5 No.5
본 연구에서는 인버터를 구동하는 용도의 직류전원장치에 대한 제어 알고리즘 개발을 목표로 하고 있으며, 구동과 희생기능을 갖는 전압형 PWM 컨버터에서 운전시 전원의 불평형을 보상하는 제어방법을 제안하고자 한다. 이를 위해 전력회생기능을 갖는 정류기에 대하여 기존 다이오드 및 SCR을 이용한 정류방식과의 비교를 통해 본 제어방식의 우수성을 시뮬레이션과 실험을 통해 입증하고자 한다. 전력변환기가 항상 평형상태를 유지하기 위해 전류제어 루프에 의하여 불평형 상태를 보상하는 방법을 사용하였으며, 통상적으로 전력변환기의 구성시 각상의 리액턴스가 같지 않은 누설변압기 등의 사용을 가능하게 하므로 제안된 전력변환기의 리액턴스가 불평형상태가 되어도 운전시 항상 평형상태로 유지되어 시스템을 안정적으로 구동 시킬 수 있는 제어기법의 설계를 통해 어떤 환경에서도 장치의 안정된 구동특성을 확인하고자 하였다. In this paper, the control algorithm of DC source device for inverter starting is proposed and the control method for compensating unbalance system source on operating time in the voltage type PWM converter with driving and regenerative faculty is suggested. The maintaining method of balancing condition for converter of AC source is used the compensating unbalanced status by current control loop. In order to solve the problem which the unbalanced system control is used to leakage transformer not equaled reactance by each phase in rectifier system. The proposed H/Wand control algorithm of rectifier system is contributed to minimize of device and rising efficiency.
3상 전압형 PWM 컨버터 운전시전원측 리액터의 불평형을 고려한 보상법
전지용,이사영,조유환 전력전자학회 2005 전력전자학회 논문지 Vol.10 No.4
In this paper, the control algorithm of DC source device for inverter starting is proposed and the control method for compensating unbalance system source on operating time in the voltage type PWM converter with driving and regenerative faculty is suggested. The maintaining way of balancing condition for converter of AC source is used the compensating unbalanced status by current control loop. Because it is possible that the unbalanced System control is used to leakage transformer not equaled reactance by each phase in rectifier system, the proposed H/W and control algorithm of rectifier system is contributed to minimize of device and rising efficiency. 본 논문에서는 인버터를 구동하는 용도의 직류전원장치에 대한 제어 알고리즘 개발을 목표로 하고 있으며, 구동과 회생기능을 갖는 전압형 PWM 컨버터에서 운전시 전원의 불평형을 보상하는 제어방법을 제안 한다.교류전원에 대하여 컨버터가 항상 평형상태를 유지하는 방법은 전류제어 루프에 의하여 불평형 상태를 보상하는 방법을 사용하였으며, 불평형의 제어는 전력변환기의 구성면에 있어서 각상의 리액턴스가 같지 않은 누설변압기 등의 사용을 가능하게 하므로 제안된 전력변환기의 하드웨어와 제어 알고리즘은 장치의 소형화와 효율향상에 기여할 것이다.
알렉산드르 헤르� 연구 : 러시아 민족주의와의 관계를 중심으로
전지용 서울대학교 러시아연구소 1996 러시아연구 Vol.6 No.-
A. 1. Herzen is an intelligentsia of a noble family. He had begun his intellectual activity on the esternism. After later forty, though prserving his earlier westernism he began to swing into the populism. Presumably, the circumstances which affected his transformation of thought are the modernization of Russia, the emancipation of serf, the failure in adapting for the culture of West, and the shock from experience in 1848, and etc.. In 60's, toward the time of his transformation to populism, he was attacked by the young radical men for 'superfluous men' whom they regarded as one of the gentry liberals of 40's. He was surely a westernizer. But it is able to see something in P.V. Annenkov's words that Herzen had begun to comprehend slavophilism through his early controversing with slavophilists in Moscow. He struck to his aristocratic tasters during his exilic life in the West, and exposed his feel a repulsion toward secular civil culture of bourgeoisie. Therefore, although he envied the western culture preserving the aroma as like a 'рейнвейна(Rhenish wine)' he had a gloomy and pessimistic view for the future of the West. In the chaos of this thought, for the hope of future society, it came up to him that Russian peasant were not dyed in the western secular culture. For him, therefore communal life of peasants is the hope of future society and the spring of the new socialist culture. In the his ideal transformation, some scholars trace out a seed of the intense russian nationalism, though Herzen plaied up the critical pose to the nationalism. Herzen had regarded the nationalism as harmfulness in the early controversy with slavophilists, and he had gave expression to his stubborn rejection toward russian nationalism facing with the Polish question in early 60's. And yet, he regarded the peasant commune of Russia as the 'samobytnost', contrasting it with the western society, and would search out the hope of the future society in the russian peasants and the peasant commune. Then, this position is the original nationalistic feeling of the third world that E. Gellner made an analysis.