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2Hall-IC, 1Hall-IC를 이용한 PM BLDCM의 회전자 위치검출
이병국,김연충,윤용호,김학성,원충연,천장성,Lee, Byoung-Kuk,Kim, Yuen-Chung,Yoon, Yong-Ho,Kim, Hack-Seong,Won, Chung-Yuen,Chun, Jang-Sung 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.4
Generally, Permanent Magnet Brushless DC Motor(PM BLDC) is necessary the Hall-IC to detect the rotor position. But it will take place the operation standstill of motor or error of rotor position detection according to the circumference temperature, humidity, or limited surroundings. This paper propose the algorithm of rotor position detection only using one or two Hall-IC. Therefore we can estimate information of the others phase in sequence through a rotor instead of using three Hall-IC at 3 phase motor. This paper identify the same characteristics, performance and function of protection circuit by the proposed algorithm with the 3 phase PM BLDC motor in comparison with general method. PM BLDC 전동기를 구동하려면 회전자 위치를 검출하는 센서가 필수적으로 요구된다. 그러나 주변 온도나 습도 등 작업 환경에 제한을 받는 곳에서는 센서의 고장 및 오동작으로 인한 전동기의 운전 정지 및 회전자 위치 검출오차에 의한 제어의 어려움이 발생할 수 있다. 따라서 3상 PM BLDC 전동기의 경우 3개의 센서를 이용하는 것이 일반적인 방법으로 사용되고 있지만 본 논문에서는 기존의 회전자 위치 검출 시 1개 또는 2개의 홀 센서만을 사용하여 기존의 방법과 동일한 성능을 가질 수 있는 알고리즘을 제안하였다. 그 결과 기존의 방법과 동일한 성능을 가지며 저가격, 보호회로 역할의 효과를 기대할 수 있다.
이병국(Byoung-Kuk Lee),백주원(Ju-Won Baek),유동욱(Dong-Wook Yoo),임근희(Gun-Hee Rim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
In this paper, a novel compensation scheme for ac-dc pwm converters under switching device fault status has been proposed, along with an effective diagnosis method. With the proposed scheme, the pwm converter can be properly operated even when one of the switching devices of the converter is out of control, so that it may ensure the performance and reliability of pwm converters to be increased. The developed scheme is explained in theoretically and the validity is verified by the informative simulation and experimental results in detail.
유병훈(Byoung-Hoon Yoo),이태원(Tae-Won Lee),장수진(Su-Jin Jang),이병국(Byoung-Kuk Lee),원충연(Chung-Yuen Won) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
In contrast with DC source, Fell cell has non linear characteristics that has lange voltage fluctuation due to load variation, and slow dynamic characteristics. when the loads are increase, the ripples of input and output voltage, also power densities, of inductor, capacitor, and switching devices, are bulky. This paper presents Interleaved boost converter using Fuel cell stacks proposed converter has merits to promote power densities without increasing loss. Because each converter has same switching frequency and constant phase difference. In this paper, Interleaved boost converter was design for 1[㎾], it's validity was proved by simulation and experiments.