Modelling and output voltage distortion with capacitive current feedback control for single phase inverter powering non?linear load

The pulse width modulation inverter is widely applied in independent PV renewable generation applications and uninterruptible power supplies. Many control schemes are investigated for the feeding non-linear loads, aiming to achieve desired performance. However, model currently proposed mostly based on a linear load, which not suitable condition with load. In this paper, uncontrolled diode rectifier load AC DC link balances analysed detail first. Then, system mathematical presented. derivation considers especially dead zone circuit performance that closer practical application conditions. Based model, output voltage strategy capacitor current feedback further given. operating principle of scheme detail. Additionally, conclusions validated by simulations experimental results.