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Power Electronics Technique I. (14 points) (a) The efficiency of a converter is 95%, if the output power is 950W, what is the input power? (b) For a DC-DC converter of n-90%, input power is 500W, the input voltage is 45V, what is the output current?
V. (20 points) In the converter of the figure, all losses can be ignored. Please answer the following questions. i(t) L D₁ (a) If R is very small, is the converter working in continuous conduction mode (CCM) or discontinuous conduction mode (DCM)? roo + V₂ (1) (b) Find the mode boundary for CCM under the form of R<Rerit(D). V₂ (c) If K=1, is the converter working in CCM or DCM? State why. (d) Find the M(D,K) for DCM. # 9₁ ic(1) R3 vit)