Design and Control of a Quasi-Z Source Multilevel Inverter Using a New Reaching Law-Based Sliding Mode Control

Muhammad Awais Rafiq, Abasin Ulasyar (), Waqar Uddin (), Haris Sheh Zad, Abraiz Khattak and Kamran Zeb
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Muhammad Awais Rafiq: Department of Electrical Power Engineering, USPCAS-E, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
Abasin Ulasyar: Department of Electrical Power Engineering, USPCAS-E, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
Waqar Uddin: Electrical Engineering Department, National University of Technology, Islamabad 44000, Pakistan
Haris Sheh Zad: Department of Mechanical & Manufacturing Engineering, Pak-Austria Fachhochschule: Institute of Applied Sciences and Technology, Haripur 22620, Pakistan
Abraiz Khattak: Department of Electrical Power Engineering, USPCAS-E, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
Kamran Zeb: School of Electrical Engineering & Computer Science (SEECS), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan

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

Abstract: The rapid growth in renewable energies has given rise to their integration into the grid system. These renewable and clean energy sources are dependent on external conditions such as wind speed, solar irradiation, and temperature. For a stable connection between these sources and power grid systems, a controller is necessary to regulate the system’s closed-loop dynamic behavior. A sliding mode control (SMC) using a new reaching law is proposed for the integration of a Modified Capacitor-Assisted Extended Boost (MCAEB) quasi-Z Source 7 level 18 switch inverter with the grid. An SMC-based controller was implemented to regulate the current flow between the inverter and the grid. SMC has the advantages of ease of implementation, robustness, and invariance to disturbance. The simulation results of SMC and the proportional integral (PI) controller are compared in terms of settling time, steady-state error, and total harmonic distortion (THD) during transient response, steady-state response and step response under different operating conditions. A hardware-in-loop (HIL)-based experimental setup of MCAEB quasi-Z source multilevel inverter was implemented using OPAL-RT. The performance of the proposed controller was further validated by implementing it on DSPACE-1202.

Keywords: quasi-Z source (qZSI); SMC; SVPWM; dq-gh transformation; hardware-in-loop (HIL); OPAL-RT; DSPACE-1202 (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 complete reference list from CitEc
Citations: View citations in EconPapers (1)

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