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이일영(I. Y. Lee),김지웅(J. W. Kim),강만곤(M. G. Kang),김영운(Y. W. Kim),송문기(M. K. Song) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Governors control the revolution speed of heat engines such as diesel engines, steam turbines and gas turbines. Precise and prompt tests for the control performances of governors are essential both in governors' manufacturing processes and in governors' maintenance processes. In the conventional governor test systems controlled by analog type electronic controllers, the incorporation of heat engine's dynamics to the test system have been considered very difficult to realize. This study suggests a new governor test system controlled by a digital controller using a personal computer. The application of the digital controller to the test system instead of the analog type electronic controller have brought about the following advancements; (1) heat engine's dynamics could be implemented easily in the test system, (2) automatic test data acquisition both in steady state and in transient state enables us to save test time and to enhance the reliability of the tests.
정주윤 동의공업대학 1998 論文集 Vol.24 No.1
Marine propulsion diesel engines which have a mechanical-hydraulic governor have been widely used to control engine speed until now. Recently, it was very difficult for this governor to regulate the speed of high power engines with a long stroke and low speed, because of the jiggling caused by the rough fluctuation of rotating torque as well as the hunting by long dead time occurring in the fuel combustion process. In this paper, an electro-hydraulic governor which utilized PID and fuzzy control algorithms is suggested to compensate for the faults of the mechanical-hydraulic governor. The Nichols chart is used to investigate the influence of parameters related to the hydraulic actuator and ship propulsion system. The computer simulation shows that the electro-hydraulic governor with PID and fuzzy logic controller has good performance improvement.
한영복,남강현,김성호 한국전자통신학회 2022 한국전자통신학회 논문지 Vol.17 No.4
국내 전력계통에 부하추종운전 중인 가스터빈 발전기들은 정격 주파수 유지에 큰 역할을 하고 있지만 종종 주파수 제어가 불량한 경우도 발생한다. 이에 가스터빈 속도제어 장치인 조속기의 제어 특성을 살펴보고 고장 유형을 분석한 후 사안 별로 대책을 제시하였다. 그리고, 가스터빈은 연료제어의 빠르기에 따라 주파수 회복에는 도움을 되지만 연소실 온도가 급격하게 변동하고 연소진동이 발생하는 등 안정 운전을 저해하는 요소로 작용하기도 한다는 것을 조속기 응동시험을 통해 확인하였다. 따라서, 안정적인 전력품질을 유지하기 위해서는 철저한 설비관리는 물론 전통적인 비례 적분 미분 제어방식과 4차산업의 핵심 분야인 기계학습 알고리즘이 융합된 조속기 제어방식의 연구 필요성이 대두되었다.
신승훈 한국유체기계학회 2024 한국유체기계학회 논문집 Vol.27 No.1
This paper focused on kinematic design of EDG’s centrifugal governor. The operation speed of EDG is controlled by centrifugal force from fly-balls. When the fly-ball moves along virtual circle geometry, operation speed of EDG is linearly controlled. But EDGs are installed to provide auxiliary power in an emergency situation, a faster start-up speed is required in reactor meltdown accident. And the EDG is not always operated, it is intermittently operated for monthly testing. Tooth wear and fatigue problem of power transmission gear can be caused by frequent start-up & stop. Therefore, new governor mechanism of EDG is suggested as a solution in this paper. If an eccentric circle geometry is used instead of a circle, it might be better method in terms of safety of nuclear plant and reliability of machine. In order to specify the eccentric circle geometry, the cam profile synthesis method is applied to EDG’s governor and then the other links are connected, kinematically.
정경택(Kyung-Taek Chung),김동복(Dong-Bok Kim) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
As safety device of rope elevator, many kinds of equipments have been used. Especially, rope brake for ascending car overspeed protection(ACOP), placed near traction sheave, is acting in upward direction on suspension ropes. Brake force is generated by spring-loaded plates, which are kept open via electromagnetic coil placed on upper cross beam of car frame structure released by signal overspeed governor. At this experiment, we confirmed that developed rope brake operated conform to related regulations.
대용량 발전소 터빈 조속기 신뢰성 확보를 위한 고압제어유계통 관리 방안에 관한 연구
강구화(Gu-Hwa Kang),이태훈(Tae-Hoon Lee),문승재(Seung-Jae Moon),이재헌(Jae-Heon Lee),유호선(Hoseon Yoo) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
In this work, the right management procedure for hydraulic power oil will be discussed and suggested. A thermal power plant turbine should respond to the change of load status. However, to satisfy the frequency of alternating current, the revolution per minute should be kept constant. Therefore, by controlling the flow rate of the steam to the turbine, the governor satisfies the load variation without alternating the revolution per minutes of the turbine. To protect the governor, the hydraulic power unit should be managed carefully by controlling the quality and the flow rate of the oil.