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이종무(J.M. Lee),김춘경(C.K. Kim),천종민(J.M. Cheon),박민국(M.K. Park),권순만(S.M. Kwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper deals with the design review of a power converter topologies for CEDMCS (Control Element Drive Mechanism Control System). The CEDMCS provides the control signals and motive power to operate the CEDMs. The CEDM's raise and lower the CEAs (Control Element Assemblies) in the reactor core. The CEAs are constructed with the Boron-If) isotope which has a high microscopic cross section of absorption for thermal neutrons. This characteristic causes the addition of negative reactivity when a CEA is inserted and positive reactivity when it is withdrawn from the reactor core.
이종무(J.M. Lee),김춘경(C.K. Kim),천종민(J.M. Cheon),김홍주(H.J. Kim),권순만(S.M. Kweon) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
This paper deals wirh the development of power control system(PCS) for nuclear power plants.. The PCS provides the control motive power to operate the CEDMs(Control Element Drive Mechanism) for reactivity control inside the reactor vessel. The CEDM is raise and lower the CEAs(Control Element Assemblies) inside the reactor core. The CEAs are constructed with the Boron-l0 isotope which has a high microscopic cross section of absorption for thermal neutrons. This characteristic causes the addition of negative reactivity when a CEA is inserted and positive reactivity when it is withdrawn from the reactor core.
이종무(J.M. Lee),김춘경(C.K. Kim),김석주(S.J. Kim),천종민(J.M. Cheon),박민국(M.K. Park),권순만(S.M. Kwon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
Generally, LPF(low pass filter) circuits are used for converting square wave to average value, but these are not used necessary for average value of square wave in real time because of time constant of LPF. This paper deals with acquiring method for average value of square wave in real time in case of frequency of output voltage is fixed, waveform of output voltage is square wave and duty of output voltage is varied like as 1 quadrant or 4 quadrant chopper.