DQ Transformation Based Control of Single-Phase Grid-Tied Inverter

Waqas, Muhammad, Ahmed, Toqeer, Elavarasan, Rajvikram Madurai, Waqar, Asad, Leong, Kenneth, Pugazhendhi, Rishi, Das, Narottam, and Jeelani, Muhammad Waqas (2021) DQ Transformation Based Control of Single-Phase Grid-Tied Inverter. In: Proceedings of the 31st Australasian Universities Power Engineering Conference. From: AUPEC 2021: 31st Australasian Universities Power Engineering Conference, 26-30 September 2021, Perth, WA, Australia.

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Direct quadrature (DQ) synchronous reference frame transformation-based current controllers are utilized due to their superior performance, while they drive on dc quantities, attaining zero steady-state error, and are highly compatible for single-phase grid-tied inverters. Therefore, in this paper, the DQ reference frame is used to control active and reactive power by employing proportional Integral (PI) control in a single-phase grid-tied inverter. By using the phase-locked loop (PLL), the injected grid current and voltages are set to be in phase. An LCL filter is applied at inverter output to reduce the harmonics. The LCL filter is designed from the perspective of control for active and reactive power, and total harmonic distortion (THD). The MATLAB/Simulink based simulation results are presented, while the output of the inverter is controlled to meet the desired load active and reactive power requirement. The simulation outcomes depict the efficiency of the proposed PI control strategy regarding a low THD of 1.68% and a steady-state time of 0.03s.

Item ID: 72927
Item Type: Conference Item (Research - E1)
ISBN: 978-1-6654-3451-5
Keywords: Active and reactive power control, Direct quadrature, LCL filter, Single phase inverter, Total harmonic distortion
Copyright Information: © 2021 IEEE
Date Deposited: 09 May 2022 23:44
Downloads: Total: 3
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