Efficiency Enhancement of Leakage Current Reduction in Three Phase Transformerless Solar Systems
نویسندگان
چکیده
This paper presents a modified z-source inverter which is an effective method for reduction of leakage current in three phase transformer less grid connected PV systems. Another modulation technique along with z-source used are space vector pulse width modulation technique which improves the accuracy of leakage current by maintaining common mode voltage (CMV) constant. The new topology only requires an potential isolator which stabilize the leakage current output from the z-source inductanceand a fast recovery diode comparing with original structure. Simulation results for the three-phase transformerless PV system operating in two cases, i.e., connected to a grid and connected to a grounded RL load, are presented. The SVM control algorithm presented in this paper is implemented through Matlab/Simulink tool and verified.
منابع مشابه
Space Vector Modulation Technique to Reduce Leakage Current of a Transformerless Three-Phase Four-Leg Photovoltaic System
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