A New Hybrid Boosting Converter for Renewable Energy Applications

Abstract

A Hybrid Boosting Converter (HBC) with collective advantages of regulation capability from its boost structure and gain enhancement functionality from its voltage multiplier structure is proposed in this paper. The new converter incorporates a Bipolar Voltage Multiplier (BVM), featuring in symmetrical configuration, single inductor and single switch, high gain capability with a wide regulation range, low component stress, small output ripple and flexible extension, which makes it suitable for front-end PV system and some other renewable energy applications. The operation principal, component stress, and voltage ripple are analyzed in this paper. Performance comparison and evaluation with a number of previous single-switch single-inductor converters are provided. A 200W 35V to 380V second-order HBC prototype was built with peak efficiency at 95.44%. The simulation and experimental results both confirm the feasibility of the proposed converter. Index Terms-HBC, Bipolar Voltage Multiplier (BVM), single-switch single inductor, nature interleaving, renewable energy

Expandable interleaved high voltage gain boost DC‐DC converter with low switching stress

“…[1][2][3][4][5][6][7] In conventional, step-up boost converters duty ratios have to be chosen near to unity to achieve higher voltage conversion ratios. Also, they can be utilized in hybrid systems, battery power supplies, and uninterruptible power supplies (UPS) applications.…”

“…Also, they can be utilized in hybrid systems, battery power supplies, and uninterruptible power supplies (UPS) applications. [1][2][3][4][5][6][7] In conventional, step-up boost converters duty ratios have to be chosen near to unity to achieve higher voltage conversion ratios. 8 Selecting wide duty cycles may cause several problems.…”

A new switched‐capacitor/switched‐inductor–based converter with high voltage gain and low voltage stress on switches

“…With the growth of renewable energy sources, such as photovoltaic and fuel cells, improved dc‐dc boost converters with higher conversion ratios and on the other hand with lower voltage tensions on semiconductor elements are needed to achieve higher efficiencies . A dc‐dc boost converter with the mentioned characteristics have multiple applications in energy conversion units of electrical vehicles, hybrid energy systems, battery power supplies, and so on .…”

Gain and Efficiency Analysis of 2-Stage Switched Capacitor (SC) Boost Based dc-dc Converter

“…Furthermore, even though the output voltage can theoretically approach infinity, this cannot be achieved experimentally due to the parasitic resistive elements in the converter. Subsequently, some researchers proposed the use of switched capacitor (SC) circuits with basic boost converter to further boost the voltage gain [16]. Nevertheless, the impacts of parasitic elements, which can still affect the practical attainable voltage gain and efficiency of the SCbased boost converter, remain to be investigated.…”