Quasi-Z-Source Inverter with Enhanced Voltage Gain for Photovoltaic Power Generation
نویسنده
چکیده
A quasi-Z-source inverter with a novel carrier based pulse width modulation (PWM) scheme is proposed for photovoltaic power generation systems. In this new technique, a high frequency sine wave is employed as carrier waveform instead of the conventional triangular wave in the simple boost technique. This increasess the shoot-through duty cycle for the given modulation index and hence the voltage gain. This paper manifests that the quasi-Z-source inverter employing this new PWM can boost DC voltage to the desired level and working as a power conditioning system to achieve the maximum power from photovoltaic array. The proposed control scheme is analyzed to exhibit the novelty of features. The control algorithm is affirmed by simulation and experimental results.
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