Design of SiC-Based Single-Phase Quasi-Z-Source Inverter
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abstract
2018 IEEE. Silicon Carbide (SiC)-based single-phase quasi-Z-source inverter (qZSI) is proposed in this paper to provide a high power density and cost benefit solution for the Photovoltaic (PV) power application. Bulky qZS impedance network is unavoidable in conventional single-phase qZSI even with SiC power devices, due to handling double-line-frequency (2) ripple. The design of SiC-based single-phase qZSI is addressed in this paper through power loss evaluation and impedance parameters determination with active power filter's phase leg for compensting the 2 ripple. All passive components are small in size and weight under the high switching frequency of SiC devices. Power devices' losses of SiC and Si-based inverter are compared. Simulation results at the designed parameters are introduced to validate the proposed solution.
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2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG 2018)