A FAMILY OF LOW DC-LINK VOLTAGE SPIKES T-SOURCE INVERTERS

Liu Hongpeng; Huang Zhaoyang; Zhou Bing; Wang Wei

doi:10.19912/j.0254-0096.tynxb.2022-0768

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 151-159. DOI: 10.19912/j.0254-0096.tynxb.2022-0768

A FAMILY OF LOW DC-LINK VOLTAGE SPIKES T-SOURCE INVERTERS

Liu Hongpeng¹, Huang Zhaoyang¹, Zhou Bing¹, Wang Wei²

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Abstract

To solve the high DC-link voltage spikes in the T-source inverter, a family of low DC-link voltage spikes T-source inverter have been proposed. Through optimizing the conventional T-source impedance network, the energy in leakage inductance of coupled inductor can be recycled, and, therefore, avoided the DC-link voltage spikes across the switch bridge. In this paper, the working modes of new topologies are analyzed in detail, and the voltage and current stresses of each element are deduced. In addition, compared with the conventional T-source inverter in terms of boost ratio, it can be proved that the low DC-link voltage spikes T-source inverter has better boost capability under the same shoot-through duty ratio and coupling inductor turns ratio. Finally, a 180 W prototype of low DC voltage spikes T-source inverter has been performed. The experimental results verified the correctness of the theoretical analysis and, effectiveness of the proposed topology structures possessing higher utilization of input power and voltage gain as well as suppression of DC-link voltage spikes.

Key words

T-source inverter / impedance network optimization / voltage spike suppression / voltage gain / component stresses

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Liu Hongpeng, Huang Zhaoyang, Zhou Bing, Wang Wei. A FAMILY OF LOW DC-LINK VOLTAGE SPIKES T-SOURCE INVERTERS[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 151-159 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0768

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