Single-Phase Boost Inverters Designed Using Half-Bridges

Publication Type:
Journal Article
IEEE Transactions on Industrial Electronics, 2023, PP, (99)
Issue Date:
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The latest single-stage boost inverter has many advantages such as continuous input or dc source current, high-frequency common-mode voltage mitigation and generation of three-level boosted ac voltage. However, it requires a dedicated circuit design, which cannot be implemented using commercial power modules such as half-bridge. To resolve this drawback, this letter proposes an improved topology designed using three half-bridges. While retaining the advantages of the latest boost inverter, the proposed topology reduces the number of conducting switches for load current during positive voltage level that enhances efficiency. The proposed three-level boost inverter can be extended to generate five levels by merely adding a half-bridge and a capacitor. The derivation of the proposed single-stage boost inverters and their operation are analyzed. Simulation and experimental results are presented for verification.
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