A Single-Stage Full-Bridge Series-Resonant Buck-Boost Inverter (Full-Bridge Topology)

Abstract: This Paper is to extract the underlying A single-stage full-bridge series-resonant buck-boost inverter (FB- SRBBI) is proposed in this paper. The proposed inverter only includes a full-bridge topology and a LC resonant tank without auxiliary switches. The output voltage of the proposed inverter can be larger or lower than the dc input voltage, depending on the instantaneous duty-cycle. This property is not found in the classical voltage source inverter, which produces an ac output instantaneous voltage always lower than the dc input voltage.The proposed inverter circuit topology provides the main switch for turn-on at ZCS by a resonant tank. The nonlinear control strategy is designed against the input dc perturbation and achieves well dynamic regulation. An average approach is employed to analyze the system. A design example of dc/ac inverter is examined to assess the inverter performance and it provides high power efficiency above 80% under the rated power.
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Keywords: High-Voltage Direct Current (Hvdc) Power Transmission, Three phase inverter,buck boost inverter, Transformer, Eight level deep hardware stack