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Ye, Y., Xu, G., Wu, Y. and Zhao, Q. (2018) Optimized Switching Repetitive Control of CVCF PWM Inverters. IEEE Transactions on Power Electronics, 33, 6238-6247.
https://doi.org/10.1109/TPEL.2017.2740565

has been cited by the following article:

  • TITLE: Grid-Connected Emergency Back-Up Power Supply

    AUTHORS: Dhiman Chowdhury, Mohammad Sharif Miah, Md. F. Hossain

    KEYWORDS: Back-Up Power Supply, Laplace Domain, Push-Pull Inverter, State Averaging Model, Switching Converter Model

    JOURNAL NAME: Circuits and Systems, Vol.10 No.1, January 31, 2019

    ABSTRACT: This paper documents design and modeling of a grid-connected emergency back-up power supply for medium power applications. Back-up power supplies are very important in regard to support electrical loads in the events of grid power outage. However, grid-integration of a back-up power supply substantiates continual power transfer to the loads, especially to the critical loads, which should not suffer from power interruptions. Therefore, design and circuit modeling of switching converters based reliable grid-tied emergency back-up power supply are presented in this paper. There are a rectifier-link boost derived battery charging circuit and a 4-switch push-pull power inverter circuit which are controlled by high frequency pulse width modulation (PWM) signals. This paper presents a state averaging model and Laplace domain transfer function of the charging circuit and a switching converter model of the power inverter circuit. A changeover relay based transfer switch controls the power flow towards the utility loads. During off-grid situations, loads are fed power by the proposed inverter circuit and during on-grid situations, battery is charged by an ac-link rectifier-fed boost converter. However, there is a relay switching circuit to control the charging phenomenon of the battery. The proposed design is simulated in PLECS and the simulation results corroborate the reliability of the presented framework.