PV-Wind-Battery based Hybrid Standalone Microgrid with Seven Level Parallel Inverter

Sunil Kumar Jakhar, Assistant Professor, Mechanical Engineering, Vivekananda Global University, Email Id-jakhar.sunil@vitj.ac.in, Jaipur, India
Sunil. MP, Assistant Professor - 3, Department of Electronics and Communicatio Engineering, Faculty of Engineering and Technology, JAIN (Deemed-to-be University), Karnataka - 562112, Email Id- mp.sunil@jainuniversity.ac.inn
Sachin Goswami, Assistant Professor, Department of Management, Sanskriti University, Email Id- hr@sanskriti.edu.in, Mathura, Uttar Pradesh, India
Dhyan Chandra Yadav, Assistant Professor, Maharishi School of Engineering & Technology, Maharishi University of Information Technology, Email Id- dc9532105114@gmail.com, Uttar Pradesh, India

^* Corresponding Author: jakhar.sunil@vitj.ac.in

Abstract

Electricity generation using a combination of renewable energy sources is an effective solution for addressing various challenges. To optimize the system’s performance, it is essential to integrate a multilevel inverter between the DC-link and the load bus. Despite the complexity associated with multilevel inverters due to a high number of switches, this paper introduces a control methodology in closed-loop for a 7-level parallel inverter to enhance power quality. The study focuses on a PMSG coupled wind power conversion unit, as well as a photovoltaic (PV) and battery powered standalone power supply system. The parallel multilevel topology being proposed necessitates only half the amount of switches in comparison to traditional topologies. Additionally, a novel Sinusoidal Pulse Width Modulation (SPWM) method is employed to generate the necessary pulses for the inverter. The Hardware – in the – Loop (HIL) simulation with OPAL-RT devices is performed to assess the system’s reaction in different operational scenarios.