Capacitance Reduction Using Ripple Suppression Control of Single Phase Energy Stored Quasi-Z-Source Inverter

Environment. Technology. Resources : Proceedings of the 11th International Scientific and Practical Conference. Vol.3 2017
Kaspars Kroičs, Jānis Zaķis, Oleksandr Husev

The energy stored Quasi-Z-source Inverter (qZSI) allows integrate energy storage in addition to the other energy source mainly for output power smoothening. Single phase inverter suffers from double-frequency power ripple in the input side and also in the energy storage that is transferred there from the ac-side. In qZSI must be used large electrolytic dc capacitors in the impedance network to suppress this 100 Hz ripple. Also to suppress this ripple can be applied two types of power decoupling: passive power decoupling and active power decoupling. In this paper is analyzed passive power decoupling that is realized by means of the modified control strategy that produces the time-varying shootthough duty cycle to mitigate power ripple without deteriorating of the output power quality. The validity of proposed control strategy was confirmed by simulation results that were obtained in PSIM software.

Atslēgas vārdi
Double-frequency ripple | Energy stored quasi-Z source | Passive decoupling | PR controller | Single-phase inverter
DOI
10.17770/etr2017vol3.2621
Hipersaite
http://journals.ru.lv/index.php/ETR/article/view/2621

Kroičs, K., Zaķis, J., Husev, O. Capacitance Reduction Using Ripple Suppression Control of Single Phase Energy Stored Quasi-Z-Source Inverter. No: Environment. Technology. Resources : Proceedings of the 11th International Scientific and Practical Conference. Vol.3, Latvija, Rezekne, 15.-17. jūnijs, 2017. Rezekne: Rezekne Academy of Technologies, 2017, 154.-158.lpp. ISSN 1691-5402. e-ISSN 2256-070X. Pieejams: doi:10.17770/etr2017vol3.2621

Publikācijas valoda
English (en)