A Common-Ground-Type Single-Stage Buck-Boost Inverter with Sinusoidal Output Voltage
- Publisher:
- IEEE
- Publication Type:
- Conference Proceeding
- Citation:
- 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), 2021, 00, pp. 397-401
- Issue Date:
- 2021-07-13
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| A_Common-Ground-Type_Single-Stage_Buck-Boost_Inverter_with_Sinusoidal_Output_Voltage.pdf | Published version | 2.93 MB |
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Single-stage inverters with a common ac and de ground are emerging topologies which effectively eliminate the high-frequency common mode voltage. However, most of the existing common-ground-type inverters are based on switched-capacitor (SC) circuits which are inherently subjected to several important issues that lead to many practical limitations. Disadvantages such as high current spikes, high capacitor voltage ripples, and distorted ac output voltage with de offset are some significant challenges in these inverters. A new common-ground-type inverter that discard the use of SCs is therefore proposed in this paper. It consists of a single-inductor and an ac output capacitor that are controlled by 8 power switches. Sinusoidal ac voltage generation in both buck and boost modes can be achieved by controlling the inductor with a sinusoidal duty-cycle. Simulations are presented to verify the operation of the proposed topology.
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