• 제목/요약/키워드: Operation characteristics

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전동열차 운행에너지를 최소화 하는 운전모드 결정 (A Study on the Selection of Train Operationg Mode Minimizing the Running Energy Consumption)

  • 김용환;김동환;김치태
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2005년도 추계학술대회 논문집
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    • pp.119-124
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    • 2005
  • Decision of operation performance mode to minimize the energy consumption of urban rail vehicle. This paper analyses how much acceleration and deceleration of urban rail vehicle should be applied andhow to choose an operation mode to minimize energy consumption when train runs between station within the fixed operation time. The decided operation pattern satisfying the minimum energy consumption becomes a target trajectory and a basis for the controller design criteria. To make this goal it grasps the characteristics of urban rail vehicle, realize operation energy model of urban rail vehicle and verify the accuracy of embodied model the Matlab simulation with the same operation result of real route. It searches for operation pattern to minimize operation energy by changing the acceleration and deceleration on the imaginative route and proposes operation pattern minimizing energy consumption by applying real operation data between Dolgogee-Sukgye section of Seoul Metropolitan Subway Line 6.

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바이오가스 연료를 사용하는 소형 가스/증기터빈 복합 발전 시스템의 성능특성 해석 (Operating Characteristics Study of a Small Gas/Steam Turbine Combined System Using Biogas)

  • 강도원;신현동;김동섭;허광범;박정극
    • 한국유체기계학회 논문집
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    • 제15권3호
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    • pp.51-56
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    • 2012
  • This study analyzed the influence of firing biogas on the performance and operation of a gas/steam turbine combined system. A reference gas/steam turbine combined system, designed with biogas fuel(57% volumetric methane) was set up and off-design simulation was made to investigate operating characteristics when a couple of operating schemes to mitigate turbine blade overheating were applied. Performance at base-load operation using each scheme was compared and part load operation using the variable inlet guide vane was analysed. Also, differences in operating characteristics and performance caused by changes in the methane content of biogas and ambient temperature were examined.

HARDWARE IN THE LOOP SIMULATION OF HYBRID VEHICLE FOR OPTIMAL ENGINE OPERATION BY CVT RATIO CONTROL

  • Yeo, H.;Song, C.H.;Kim, C.S.;Kim, H.S.
    • International Journal of Automotive Technology
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    • 제5권3호
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    • pp.201-208
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    • 2004
  • Response characteristics of the CVT system for a parallel hybrid electric vehicle (HEV) are investigated. From the experiment, CVT ratio control algorithm for the optimal engine operation is obtained. To investigate the effect of the CVT system dynamic characteristics on the HEV performance, a hardware in the loop simulation (HILS) is performed. In the HILS, hardwares of the CVT belt-pulley and hydraulic control valves are used. It is found that the engine performance by the open loop CVT ratio control shows some deviation from the OOL in spite of the RCVs open loop control ability. To improve the engine performance, a closed loop control of the CVT ratio is proposed with variable control gains depending on the shift direction and the CVT speed ratio range by considering the nonlinear characteristics of the RCV and CVT belt-pulley dynamics. The HILS results show that the engine performance is improved by the closed loop control showing the operation trajectory close to the OOL.

원격 파지의 조작 특성에 관한 실험적 연구 (An experimental study on the operation characteristics of tele-grasping)

  • 김종태;김회주;권대규;유기호
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.1101-1104
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    • 2003
  • In this paper, we performed the study on the operation characteristics of tele-grasping using the developed experimental system. The experimental system consists of master and slave gripper. and signal processing system. For the stable grasping of an object, this system feedback the normal force obtained from the straingage of the slave gripper to magnetic particle brake of the master gripper through the signal processing system. This experimental system can control the grasping force in remote using the force feedback device. Some experimental results of the-tele-grasping are presented and discussed

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초전도 한류기 회복특성에 따른 재폐로 차단기 동작 연구 (A Study on Recloser Operation According to Recovery Characteristics of Superconducting Fault Current Limiter)

  • 이상봉;김철환;김규호;김재철;현옥배
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 제39회 하계학술대회
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    • pp.379-380
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    • 2008
  • For proper application and operation of a SFCL(Superconducting Fault Current Limiter), the prior investigation of fundamental characteristics and its effects to the distribution systems are needed. In this paper, the resistive type SFCL and recloser were developed by using EMTP/ATPDraw and MODELS language. To analyze the effect of recovery characteristics of SFCL according to recloser operation in distribution systems, case studies have been simulated and investigated.

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리모트 프라즈마 전원용 하프 브리지 인버터의 운전 특성 (A Operation characteristics of the HB inverter for Remote Plasma Source)

  • 김수석;원충연;최대규;최상돈
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2003년도 춘계전력전자학술대회 논문집(2)
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    • pp.611-615
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    • 2003
  • In this paper, a operation characteristics and analysis of the HB(half bridge) inverter for remote plasma system are studied. the remote plasma system is cleaning system for the chemical vapor deposition (CVD) chamber in semiconductor processing. The remote plasma system is powered by the RF generator The main power stage of the RF generator is used for the HB PWM inverter with an low pass filter in the secondary circuit of the transformer. The detailed mode analysis of HB invertor was described. The operation characteristics of Remote Plasma Source are verified by simulation and experimental results.

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금강하구둑 배수갑문 조작에 의한 상류수역의 수위변동 (Variation of Water Level on the Upstream Gauging Station by Operation of the Drainage Sluice Gate of Geumgang Estuary Dam)

  • 박승기
    • 한국농공학회논문집
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    • 제47권6호
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    • pp.15-24
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    • 2005
  • The normalization on the characteristics of water level change at the upstream gauging station was attempted according to the operation of drainage sluice gate of the Geumgang estuary dam. The characteristics were normalized by the analysis of water level change and by the linear-regression of the water level data measured at the inner station of Geumgang estuary dam and upstream gauging station. The results of normalization may be referred to the management of Geumgang estuary lake, the operation of pumping and drainage stations in the shore of the lake. The mean response time of water level change on Ibpo, Ganggyeong and Gyuam water level station were 39,81 and 160 minutes, when sluice gate was opened respectively. The mean velocity of surface wave, the mean displacement of water level change, the mean time of water level change and the mean rate of water level change varied largely depending on the location of gauging station and the characteristics of stream section of the water level gauging station.

손실해석을 통한 능동 클램프 포워드 컨버터의 동작 특성비교 (A Comparative Study of Operation characteristics of Active Clamp Forward Converter Based on Loss Analysis)

  • 오덕진;김희준;김창선
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 F
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    • pp.2039-2041
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    • 1998
  • In this paper, Operation characteristics of the active clamp(ACL) zero-voltage-switching(ZVS) forward converter(FC) and active clamp hard- switching(HS) forward converter are compared with respect to loss analysis. The losses of semiconductor (including conduction losses and switching losses), transformer(containing the core loss and copper loss) and parasitic element of passive element (capacitor, inductor) are measured and compared for each type. For an experiment we have built 50W ACL ZVS-FC and ACL HS-FC, in which the switching frequency is 200kHz, and test it. The experimental results show that both types of operation have nearly same characteristics.

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Analysis on Current Limiting Characteristics of Transformer Type SFCL with Additionally Coupled Circuit

  • Lim, Seung-Taek;Ko, Seok-Cheol;Lim, Sung-Hun
    • Journal of Electrical Engineering and Technology
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    • 제13권2호
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    • pp.533-539
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    • 2018
  • In this paper, the transformer type superconducting fault current limiter (SFCL) with additionally coupled circuit was suggested and its peak fault current limiting characteristics due to the fault condition to affect the fault current were analyzed through the fault current limiting tests. The suggested transformer type SFCL is basically identical to the previous transformer type SFCL except for the additional coupled circuit. The additional coupled circuit, which consists of the magnetically coupled winding to the primary and the secondary windings together with another superconducting element and is connected in parallel with the secondary winding of the transformer type SFCL, is contributed to the peak fault current limiting operation for the larger transient fault current directly after the fault occurrence. To confirm the fault current limiting operation of the suggested SFCL, the fault current limiting tests of the suggested SFCL were performed and its effective peak fault current limiting characteristics were analyzed through the analysis on the electrical equivalent circuit.

자극에 대한 상호작용 관점에서의 노인의 오류 특성 (The Elderly's Error Characteristics in Some Human Interactions)

  • 정광태
    • 대한인간공학회지
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    • 제30권1호
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    • pp.109-115
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    • 2011
  • In this research, three topics were studied for the elderly. The first was the elderly's error characteristics for tracing task and the second was for depth perception. The characteristics were compared with the young's. Twenty two old people and twenty two young people participated in the tracing experiment, respectively. In the depth perception experiment, twenty three old people and twenty two young people participated. A depth perception apparatus and a tracing one were used in the experiment. In the depth perception error, a significant difference was not detected on gender. However significant differences were detected with age and viewing distance. In the tracing error, significant difference was detected with age, also. The third experiment was push-button operation and fifteen old people participated in the experiment. As the result, operation time error was increased with the button size and the moving distance. The result of this study will be able to be considered in its user interface design to reduce the elderly's error while using a product.