Hysteresis Based Quasi Fixed Frequency Current Control of Single Phase Full Bridge Grid Integrated Voltage Source Inverter

Lakshmi Syamala (), Deepa Sankar, Suhara Ekkarakkudy Makkar, Bos Mathew Jos and Mathew Kallarackal
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Lakshmi Syamala: Department of Electronics and Communication Engineering, Mar Athanasius College of Engineering, Kothamangalam 686666, India
Deepa Sankar: Department of Electrical and Electronics Engineering, Adi Shankara Institute of Engineering and Technology, Kalady 683574, India
Suhara Ekkarakkudy Makkar: Department of Electrical Engineering, Government Engineering College, Thrissur 680009, India
Bos Mathew Jos: Department of Electrical and Electronics Engineering, Mar Athanasius College of Engineering, Kothamangalam 686666, India
Mathew Kallarackal: Department of Electronics and Communication Engineering, Mar Athanasius College of Engineering, Kothamangalam 686666, India

Energies, 2022, vol. 15, issue 21, 1-17

Abstract: The traditional Fixed Band Hysteresis Current Control (FB-HCC) though being widely used for the current control of grid integrated voltage source inverter (GI-VSI), has the drawback of variable switching frequency. To overcome this drawback, Complex Programmable Logic Device (CPLD) based switching scheme is proposed in this paper. The proposed method calls for a single reference wave and the control concept is to terminate the rising and falling inductor current ( i L ) either by the comparator or by the CPLD, based on the nature of its slope. Termination of the i L with steeper slope by the comparator ensures lower current ripple, whereas the CPLD ensures constant switching frequency ( f s w ). However, the i L obtained with the proposed logic has a DC offset, which is corrected by modifying the reference. The basic concept, switching logic, and reference correction are thoroughly detailed. MATLAB/Simulink results are included to verify the proposed concept. The constant frequency operation of the proposed method is also validated in a 2 kW, 230 V, 50 Hz GI-VSI prototype.

Keywords: complex programmable logic device; constant switching frequency; hysteresis current control; grid integrated voltage source inverter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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