Modified Impedance-Source Inverter with Continuous Input Currents and Fault-Tolerant Operations
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Yuan, J., Yang, Y., Liu, P., Shen, Y., & Blaabjerg, F. (2020). Modified Impedance-Source Inverter with Continuous Input Currents and Fault-Tolerant Operations. Energies, 13 (13)https://doi.org/10.3390/en13133408
Impedance-source (Z-source) inverters are increasingly adopted in practice, where a high voltage gain is required. However, issues like drawing a non-continuous current from the DC source and ceasing the energy supply under DC source faults are also observed. In this paper, an embedded enhanced-boost Z-source inverter (EEB-ZSI) is thus proposed to tackle the issues. The proposed EEB-ZSI employs two DC sources, which enable the continuous input current and fault-tolerant operations (e.g., open-circuit and short-circuit faults in the DC sources). The operational principles are presented in detail with an in-depth circuit analysis. Moreover, the proposed EEB-ZSI is benchmarked with prior-art Z-source inverters. Experimental tests further demonstrate the effectiveness of EEB-ZSI regarding the continuous input current and flexible fault tolerance.
impedance source converter, Z-source inverter, switched-inductor, fault-tolerant, continuous input current
Velux Fonden (00016591)
External DOI: https://doi.org/10.3390/en13133408
This record's URL: https://www.repository.cam.ac.uk/handle/1810/307618