-Multiphase dc-dc converters are widely used in modern power electronics applications due to their advantages over single-phase converters. Such advantages include reduced current stress in both the switching devices and passive elements, reduced output current ripple, increase in output voltage and overall efficiency and so on. The output current ripple of a converter can be significantly reduced by virtue of the interleaving connection. This paper presents a design and simulation of an interleaved high step up DC-DC converter with PID controller. The control strategy of the converter is based on a Proportional-Integral-Derivative (PID) controller. The proposed converter achieves a high step-up voltage-conversion ratio without extreme duty ratio and the numerous turns-ratios of a coupled inductor and reduction in the input current ripple with the efficiency higher than 97%.The PID controller is used in the feedback to reduce the rise time and steady state error. The proposed interleaved high step up DC-DC converter model along with PID controller is modeled using SIMULINK and the simulation results are presented in this paper to authenticate the proposed scheme.KEYWORDS:-Interleaved boost, high step up DC-DC converter, PID controller. I.INTRODUCTIONInterleaved connection is a method in which the additional circuit is added in between the input and output of the main circuit in order achieve the increase in overall efficiency and output voltage of the converter and also reduce in input ripple and output ripple.Interleaving is not a new technique earlier it was only used in the buck converter topology and there have been many papers describing the use of multiphase buck converters, especially for high-performance high-power applications [1, 2, and 3]. However, all the advantages of interleaving, such as higher efficiency, increase in output voltage and reduced input and output ripple for voltage/current, are also realized in the boost topology. Most of the controllers used in buck applications apply equally well when configured for use in an interleaved boost application. In [4] multi-phase buck converter controlled by PID is presented. II. LITERATURE REVIEWNow a day's the interleaved high step up DC-DC converter has been widely used in photovoltaic generation, electric vehicles and power factor correction due to its high power density and fast dynamic response [5]- [6]. The input current ripple of the conventional boost converter is inversely proportional to its input inductor value [7], which means that a large inductor value will result in low input current ripple; however, a large inductor value increases the total weight of a capacitor with low ESR must be used [8]. Interleaved parallel structure has been applied in many high power density applications [9]-[10] in order to minimize the input current ripple, reduce the passive component size, improve the transient response and increase the power level. The frequency doubling characteristic of the interleaved structure can significantly reduce the o...
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