Control System Design of Battery-Assisted Quasi-Z-Source Inverter for Grid-Tie Photovoltaic Power Generation

abstract

• A control strategy for the quasi-Z-source inverter (qZSI) with a battery-based photovoltaic (PV) power conversion system is proposed. A battery-assisted qZSI can buck/boost PV panel voltage by introducing shoot-through states, and make full use of PV power by the energy-stored battery paralleled to the quasi-Z-source capacitor. A dynamic small-signal model of the battery-assisted qZSI is established to design a closed-loop controller for regulating shoot-through duty ratio and managing the battery's energy storage. A modified space vector modulation (SVM) technique for the qZSI is applied to achieve low harmonics, high voltage utilization, and high efficiency. A P-Q decoupled grid-tie power injection is fulfilled with the maximum power capture from PV panels and the unity power factor. The validity of the proposed PV system is proved by experimental results, showing an efficient method for the energy-stored PV power generation. 2013 IEEE.

authors

• Abu-Rub, Haitham

published proceedings

• IEEE TRANSACTIONS ON SUSTAINABLE ENERGY

author list (cited authors)

• Liu, Y., Ge, B., Abu-Rub, H., & Peng, F. Z.

citation count

• 107

complete list of authors

• Liu, Yushan||Ge, Baoming||Abu-Rub, Haitham||Peng, Fang Zheng

publication date

• October 2013

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Sustainable Energy  Journal

keywords

• Energy Storage
• Grid-tie Photovoltaic (pv) Power System
• Quasi-z-source Inverter (qzsi)
• Space Vector Modulation (svm)

Digital Object Identifier (DOI)

• 10.1109/TSTE.2013.2263202

start page

• 994

end page

• 1001

volume

• 4

issue

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Ftste.2013.2263202

user-defined tag

• 7 Affordable and Clean Energy