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Abstract
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This paper combines quasi-Z-source into a typical five-level inverter, which includes two dc voltage sources,
two quasi-Z-sources and five switching devices. In this structure, the output voltage amplitude is not limited to dc
voltage source and it can be increased by quasi-Z-source. Besides, due to nature of Z-source families, this new
structure is reliable and higher efficiency. Also, in this inverter, two quasi-Z-networks can be controlled independently.
This paper also proposes new switching algorithms for proposed five-level dual quasi-Z-Source inverter based on pulse
width modulation (PWM) and selective harmonic elimination method (SHEM) algorithms. The performance of
proposed inverter and switching algorithm are validated with simulation results using MATLAB/SIMULINK software
and experimental results based PCI-1716 data acquisition system.
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