期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2233&2234
页码：647-652
出版社：Newswood and International Association of Engineers
摘要：A closed-loop high-gain dual-clamped-voltage
coupled-inductor switched-capacitor (DCISC) converter is
proposed by combining a pulse-width-modulation-based (PWMbased)
compensator and a non-overlapping circuit for step-up
DC-DC conversion and regulation. The power part contains two
subcircuits: (i) a dual-clamped-voltage coupled-inductor (DCI)
booster and (ii) a three-stage switched-capacitor (SC) doubler, in
cascade connection between source VS
and output Vo
. With the
help of two clamping capacitors and a coupled inductor with the
turn ratio n, this DCI booster can provide the voltage of
(n+1)∙[(2-D)/(1-D)]∙VS
theoretically, where D means the duty cycle
of the MOSFET. And then by using the SC doubler, the overall
step-up gain can reach to 3∙(n+1)∙[(2-D)/(1-D)] at most. Practically,
this DCISC can boost the voltage gain up to 41.94 when D=0.61,
n=3. Further, the PWM technique is adopted not only to enhance
the output regulation for the compensation of the dynamic error
between the practical and desired outputs, but also to reinforce
output robustness against source or loading variation. Finally, the
closed-loop DCISC is designed by OrCAD SPICE and simulated
for some cases: steady-state and dynamic responses. All results are
illustrated to show the efficacy of the proposed scheme.
