`Improved High Efficiency Inverter WithH6 Type Configuration to Eliminate CMLC for PV System
نویسندگان
چکیده
To eliminate the common-mode leakage current in the transformerless photovoltaic system, an improved high efficiency inverter H6 type configuration with Z-source is presented. The Z-source network can perform boost as well as sustained shoot through operation. Also, the improved transformer less inverter can sustain the same low input voltage as the full-bridge inverter and guarantee to completely meet the condition of eliminating commonmode leakage current. The sinusoidal pulse width modulation (SPWM) control strategy has applied to implement the presented inverter. Moreover, the higher frequency and lower current ripples are obtained by adopting the doublefrequency SPWM, and thus the total harmonic distortion of the PV system is reduced greatly.
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