Shanmuka Naga Raju,  Bipolar PWM and LCL Filter Configuration to Reduce Leakage Currents in Transformerless PV System Connected to Utility Grid.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2018, vol. 138(6). 499 - 505
    [viewed 31 March 2020]. Available from: https://publications.waset.org/pdf/10009243.