• 제목/요약/키워드: Through-drive

검색결과 1,556건 처리시간 0.034초

소형 근거리 이동용 전기자동차(NEV)용 10kW급 BLAC 구동인버터 개발 (A development of 10kW BLAC drive inverter for neighborhood electric vehicle)

  • 이용균;김은경;김선일;홍찬희;방량;목형수
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2011년도 전력전자학술대회
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    • pp.130-131
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    • 2011
  • This paper deals with 10kW BLAC drive inverter for neighborhood electric vehicle. First it introduces about hardware structure of inverter driven using 72volts battery. Then it explains motor control algorithm. Also performance of BLAC drive system is confirmed through experiments.

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유도전동기의 고성능 구동을 위한 고신뢰성 제어시스템 (A Fault-Tolerant Control System for High Performance Induction Motor Drive)

  • 김상훈;설승기;박민호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1992년도 하계학술대회 논문집 B
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    • pp.1199-1202
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    • 1992
  • This paper describes a fault-tolerant control system for high I performance induction motor drive. A new fault-tolerant scheme using three processor-based controllers is presented. The proposed scheme guarantees the high reliability and provides the flexibility of controllers utilization. Through the comparison of estimated reliability, it is verified that the proposed scheme gives higher reliability than TMR to the control system for induction motor drive.

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LCD 백라이트를 위한 LED 드라이브 시스템의 고성능 제어 (High Performance Control of LED Drive System for LCD Backlight)

  • 고재섭;정동화
    • 조명전기설비학회논문지
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    • 제26권9호
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    • pp.8-17
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    • 2012
  • This paper proposes high performance control of light emitting diode(LED) drive system for liquid crystal display(LCD) backlight. The CCFL(cold cathode fluorescent lamp)was used to a conventional LCD backlight. Due to improvement on luminous efficiency, long life and wide color gamut, LED has gradually substituted for CCFL as backlight. The backlight using LED is necessary to use many LED. For that reason, the LED backlight is using a lot of LED driving circuits. The many LED driving circuit is generated a current deviation between LED. Eventually, it is caused brightness deviation between LED. Therefore, this paper improves the current deviation using transformer and balancing capacitor to solve this problem. Also, for accurate and uniform brightness control, this paper is applied the artificial intelligent control to a dimming control. This paper is compared with conventional system, and validity of this paper proves through that result.

고역율형 단상 SRM의 토크리플 저감을 위한 구동회로 설계 (Torque Ripple Reduction Driver of Single Pulse SRM for High Power Factor)

  • 김봉철;이동희;안진우
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2004년도 전력전자학술대회 논문집(1)
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    • pp.308-311
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    • 2004
  • A novel single-stage power factor corrected (PFC) drive for switched reluctance motor (SRM) is presented to achieve sinusoidal, near unity power factor input current. The proposed PFC SRM drive has no additional active switch. And a single-stage approach, which combines a DC link capacitor used as do source and a drive used for driving the motor into one power stage, has a simple structure and low cost. The characteristics and validity of the proposed circuit will be discussed in depth through the experimental results.

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브러시리스 직류 전동기 센서리스 드라이브의 성능 향상을 위한 새로운 회전자 위치 간접 검출 방식 (A novel indirect rotor position sensing method to improve the performance of sensorless drive for brushless DC motors)

  • 조현민;이광운;박정배;여형기;유지윤
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 1999년도 전력전자학술대회 논문집
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    • pp.31-36
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    • 1999
  • In this paper, a novel indirect rotor position sensing method is proposed to improve the performance of sensorless drive of brushless DC motors. Fast mode change to the sensorless operation is difficult in the existing indirect rotor position sensing methods because precise rotor position can not be obtained when an excessive input is applied to the drive during synchronous operation mode. To cope with this problem, the relationship between terminal voltage and back-emf waveform is analyzed in this paper, also a novel indirect position sensing method which can detect a precise rotor position at low speed range is proposed. The effectiveness of the proposed method is verified through the experimental results.

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Current-Controlled Driving Method for AC PDP and Experimental Characterization

  • Kim, Joon-Yub;Lim, Jong-Sik
    • KIEE International Transactions on Electrophysics and Applications
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    • 제2C권5호
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    • pp.253-257
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    • 2002
  • A new Current-Controlled Driving Method that can drive AC PDPs with low voltage and high luminous efficiency for the sustaining period is presented. In this driving method, the voltage source is connected to a storage capacitor and the stored voltage is delivered to the panel through LC resonance. Thus, this driving method can drive the panel with a voltage source as low as about half of the voltage necessary in the conventional driving methods. The discharge current flowing into the AC PDP is limited in this method. Thus, the power consumption for the discharge is reduced and the discharge input power to output luminance efficiency is improved. Experimental results using this driving method showed that we could drive an AC PDP with a voltage source as low as 146V and that high luminous efficiency of 1.33 1m/W can be achieved.

멀티레벨 인버터를 이용한 3상 유도전동기 구동 시스템의 EMI 필터 설계 (Design of EMI filters for an Induction Motor Drive System with Multi-level inverters)

  • 김수홍;안영오;방상석;김광섭;김윤호
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제55권5호
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    • pp.265-270
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    • 2006
  • In this paper EMI problems with induction motor drive system using multi-level inverters are investigated. The high power multi-level inverter usually operates with low switching frequency and produces large noises. Generally, EMI consists of the conduction component through source lines and emission component emitted to the space. This conduction component can be classified to the common-mode between source line and ground, and the normal-mode between lines. The EMI filters for the induction motor drive system are designed and implemented to reduce EMI noise. Finally the designed system is verified by the experiment. The experimental results show that both the normal mode and common mode noises are greatly reduced compared to the system without filters.

전력 Switching 소자를 압전트랜스로 구동하는 방법 (The Driving Method of Power Switching Device Using Pizoelectric Transformer)

  • 황민규;이상균;이재춘;최준영
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 D
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    • pp.1324-1326
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    • 1998
  • To drive motor or heating machine, it needs the electric power system like the apparatus of inverter. This electric power system obviously comprises power switching devices and drivers to run them. And this system has the topology comprised one/many arm(s), - each arm has high side switching device and low side switching device. Transformer, photocoupler, and HVIC having functions of isolation and level shift which are important thing to drive high side switching device are used as component of drivers in conventional apparatus. Piezoelectric transformers are proposed in this paper, and applied to drive high side swiching device. Through experiments, the possiblities of driving high side switching device are presented and the problems are mooted concurrently. But, we also consider a counterplan for solving the mooted trouble issues.

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해석적 Bode 방법에 의한 직접구동형서보밸브의 고전적 제어기 설계 (Classical Controller Design of Direct Drive Servo Valve Using Analytical Bode Method)

  • 이성래;최현영;문의준
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2001년도 추계학술대회논문집A
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    • pp.507-514
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    • 2001
  • Direct drive servovalve(DDV) is a kind of one-stage valve since the rotary motion of DC motor is directly transferred to the linear motion of valve spool through the link. Since the structure of DDV is simple, it is less expensive, more reliable and offers reduced internal leakage and reduced sensitivity to fluid contamination. However, the flow force effect on the spool motion is significant such that it induces large steady-state error in a step response. If the proportional control gain is increased to reduce the steady-state error, the system becomes unstable. In order to satisfy the system design requirements, the classical controller is designed using the analytical Bode method.

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롤러 기어 메커니즘을 이용한 직선이송시스템 (Linear Drive Systems using Roller Gear Mechanism)

  • 김창현;남형철;권순만
    • 한국생산제조학회지
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    • 제21권5호
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    • pp.702-707
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    • 2012
  • This paper considers two linear drive systems using roller gear mechanism(RGM), one is the RRP(roller rack pinion) system that consists of a roller rack and a cam pinion, the other is the CRP(cam rack pinion) system that consists of a cam rack and a roller pinion. Through the comparison of contact forces and load-stress factors between two linear drive systems, it reveals that the RRP system is superior to the CRP system in the aspect of the bending strength, while the CRP system has higher contact fatigue resistance than that of the RRP system.