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Ksenija Josipovic,Aleksandar Prodic,Giacomo Calabrese,Florian Neveu 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-
A hardware-efficient, 3-mode controller obtaining minimum deviation response for non-inverting buck-boost is introduced. It improves on the already existing ripple shaping algorithm [1] and provides fast transient response of the output voltage. The operation of the controller is verified with a V<SUB>IN</SUB> ϵ [3.3,9] V, 100 W, 62.5-250 kHz experimental prototype, producing up to 5 V. Practically the smallest possible voltage deviation of the output voltage is achieved with smooth transitions between the buck, boost and ripple shaping modes.
고체-고체-기체 화학 열펌프 시스템의 반응기 설계에 관한 연구
김성준,이태희,최홍규,이종호,Kim, S.J.,Lee, T.H.,Neveu, P.,Choi, H.K.,Lee, J.H. 대한설비공학회 1994 설비공학 논문집 Vol.6 No.4
In this study the reactor design procedure and method of solid-solid-gas chemical heat pump system using STELF technology were investigated. For manufacturing IMPEX block which is the kernel of reactor, proper salt pair should be selected, and equilibrium temperature drop and COP should be examined for selected salt pair. Moreover, apparent density, residual porosity, and graphite ratio should be calculated to give minimum block volume and mass, and maximum energy density without causing heat and mass transfer problems. Since heat exchange area can be changed with operating condition, reactor diameter, length, and stainless steel thickness should be decided for desired specifications. These procedure and method were applied to the case study of 6kW cold production and 8 hours storage capacity reactor.