Isolated Boost Converter with Bidirectional Operation for Supercapacitor Applications

Abstract

This paper presents an isolated bidirectional dc/dc converter based on primary parallel isolated boost converter (PPIBC). This topology is an efficient solution in low voltage high power applications due to its ability to handle high currents in the low voltage side. In this paper, the converter has been modeled using non-ideal components and operated without any additional circuitry for startup using a digital soft-start procedure. Simulated and measured loop gains have been compared for the validity of the model. On-the-fly current direction change has been achieved with a prototype interconnecting two battery banks. A second prototype has been constructed and tested for supercapacitor operation in constant power charge mode.

Novel bifunctional converter‐based supercapacitor energy storage module with active voltage equalizing technology

“…As a general technology, the proposed bifunctional circuit can be applied in various SC energy storage fields that require high voltage equalizing efficiency, compact size, and boosted terminal voltage. For example, the circuit can be used as the interface between the SC strings and the DC bus in a solar power plant and hybrid vehicle with SC [28].…”

Interleaved Boost Converter for Photovoltaic Energy Generation

“…DC-DC converters are more popular that are commonly used in switch mode power supplies, home solar systems to produce the desired output power [2]. Recently several topologies of DC-DC converters are reported [3][4][5][6][7][8][9][10][11][12].…”

“…Interleaved technique provides merits of high current and reducing passive component size but the voltage stress is equal to the output voltage [7]. To improve the capacity of the energy storage elements, an ac/dc converter may work in very light loads [8][9][10].…”