Cascaded Voltage Control of Three-Phase Four-Leg Inverter for OFF Grid Solar Photovoltaic Applications

  • Ikkurti Sai Chaitanya
  • Hanumath Prasad Ikkurti
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 435)


Solar photovoltaics (PV) is one of the popular renewable energy sources in tropical countries like India which can help in supplementing the rising demand of electrical energy. DC input from solar PV strings needs to be converted into AC component both for ON and for OFF grid applications. Three-phase inverters are used for the above inversion when power levels are high. In OFF grid applications, task of maintaining stable terminal voltage across the loads lies with the inverter in the absence of utility grid. It also has to supply variety of balanced and unbalanced loads. In this paper, cascaded voltage control scheme, for a three-phase four-leg inverter, is developed. Parameters of the proportional resonant controllers (PR) are tuned using bode plot techniques. Simulations results are presented for operation under different loading conditions.


Cascaded voltage control Four-leg inverter PR controller Solar inverter 



The authors express their gratitude to Council of Scientific and Industrial Research (CSIR), New Delhi, for funding this project under TAPSUN program.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Ikkurti Sai Chaitanya
    • 1
  • Hanumath Prasad Ikkurti
    • 1
  1. 1.CSIR-Central Mechanical Engineering Research Institute (CSIR-CMERI)DurgapurIndia

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