BibTeX:

@article{IJIRSTV1I12056,
     title={Low Harmonic Capacitive Inverter},
     author={Geo Paul, R Anjali, G Krishnan and Priya Jose},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={12},
     pages={204--207},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I12056.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

A control strategy is proposed to make the output impedance of an inverter capacitive at low frequencies (such inverters are called C-inverters). The proposed control strategy involves the feedback of the inductor current through an integrator, which is actually the impedance of a virtual capacitor. An effective approach is to form an inductor current feedback through an integrator, of which the time constant is the desired output capacitance. This is a virtual capacitor. The gain of the integrator or the virtual capacitance is first selected to guarantee the stability of the current feedback loop.

Inverters with capacitive output impedance, (C-inverters), inverters with inductive output impedance (L-inverters), inverters with resistive output impedance (R-inverters), power quality, total harmonic distortion (THD)