Quadratic DC-DC Boost Converter Using Coupled Inductors for High Step-Up Ratio

Based on the topology of the quadratic boost converter, this paper presents three new improved topologies of boost converters employing coupled inductors, two converters using one coupled inductor and one converter using two coupled inductors. Generally speaking, the use of coupled inductors is very helpful for increasing the step up ratio of the dc-dc boost converter. Each converter has a high step up ratio and a high power transferring efficiency. In this paper, the operating principles and theoretical analysis will be discussed in details. And also simulation circuits will be developed by using the software LTspice XVII to illustrate the capability and potential value of the proposed circuits.