This paper presents a novel high-efficiency three-port bidirectional DC–DC converter for photovoltaic (PV) systems. A PV system’s output is stepped up to supply DC bus or load while charging the battery. When insufficient, battery voltage bus; when has excess energy, it down charge Thus, step-up/step-down achieved. common-core coupled inductor was designed and adopted in proposed converter. Pow...

background: dermatoglyphics are the dermal ridge configurations on the digits, palms and soles. dermatoglyphic polymorphism results from the co-operation of genetic and environmental factors. the dermatoglyphic analysis is a valuable completion of initial diagnosis of some syndromes genetically determined. our objective was to assess dermatoglyphics study results against standard chromosomal an...

Step-down testing procedures for the Hotelling T2 problem are considered. We show that the step-down procedure proposed by S.N. Roy, R.E. Bargmann, and J. Roy is inadmissibleamonginvariantprocedures (for a suitable invariance group) in many situatiqns, includiItgallthosefor which more than two steps are contemplated. We also show that in most cases, the power of the step-down procedure decrease...

In this article, a nonisolated three-port dc-dc converter with high voltage conversion ratio is proposed. the proposed converter, by changing place of input source between each three ports, different single-input two-output operation modes are achieved. The current ripple eliminated at low side for whole range duty cycles. ratios can be increased increasing turns second winding coupled inductor...

Background: Dermatoglyphics are the dermal ridge configurations on the digits, palms and soles. Dermatoglyphic polymorphism results from the co-operation of genetic and environmental factors. The Dermatoglyphic analysis is a valuable completion of initial diagnosis of some syndromes genetically determined. Our objective was to assess dermatoglyphics study results against standard chromosomal an...