WSEAS Transactions on Electronics
Print ISSN: 1109-9445, E-ISSN: 2415-1513
Volume 8, 2017
Comparative Analysis of Boost and Cascaded Boost Converter
Authors: ,
Abstract: In this paper, an overall comparison between the Boost Converter (BC) & Cascaded Converter or Cascaded Boost Converter (CBC) is given in terms of ideal condition, as well as with the consideration of Equivalent Series Resistance (ESR) of inductor. The loss comparison in the two converters due to the ESR is also included in this paper. It is seen that in CBC, voltage gain is more but the power loss due to ESR is also more compared to the BC. The parameters of the converters are found out with a consideration of per unit ripple quantity of inductor current and capacitor voltage. A boundary condition between the continuous conduction mode (CCM) & discontinuous conduction mode (DCM) of the inductor current is also shown. The behaviour of the capacitor current for the converters is discussed during ON and OFF condition of the switch(es). At the end, the simulation results of both the converters are given for a 20V/100V, 100 W output. The analysis and simulation results are presented in this paper for the verification of the feasibility.
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Keywords: boundary condition, capacitor current, cascaded converter, DC-DC converter, inductive ESR, ESR loss comparison, simulation
Pages: 100-108
WSEAS Transactions on Electronics, ISSN / E-ISSN: 1109-9445 / 2415-1513, Volume 8, 2017, Art. #13