High step-up interleaved boost converter utilising stacked half-bridge rectifier configuration

Abstract

This paper proposes a solution to complement the insufficient voltage gain and voltage stress distribution of classical interleaved boost converter in high step-up application. An interleaved converter integrating coupled inductor and voltage multiplier cell, which provides an additional voltage gain is proposed. By stacking the secondary side of the interleaved coupled inductor to its primary side, a high step-up voltage gain and distributed voltage stress are realised. Low-voltage rated devices ultimately reduce the conduction losses. The principle of operation and the performance characteristic of the converter are presented and verified by an experimental prototype of 140 W, 12 V input, and 120 V output.

Keywords

• rectifying circuits
• bridge circuits
• voltage multipliers
• power convertors
• DC-DC power convertors
• switching convertors
• inductors
• power inductors
• rectifiers
• voltage 12.0 V
• power 140.0 W
• voltage 120.0 V
• low-voltage rated devices
• distributed voltage stress
• high step-up voltage gain
• interleaved coupled inductor
• additional voltage gain
• voltage multiplier cell
• interleaved converter integrating coupled inductor
• high step-up application
• classical interleaved boost converter
• voltage stress distribution
• insufficient voltage gain
• half-bridge rectifier configuration
• high step-up interleaved boost converter utilising