1. Electrical and Power Engineering Department, National University of Sciences & Technology (NUST), Karachi Campus (PNEC), Habib Ibrahim Rahmatullah Rd., Karachi 74500, Pakistan (Corresponding author), e-mail: omerzia74@hotmail.com, https://orcid.org/0000-0002-5718-0829
2. Electrical and Power Engineering Department, National University of Sciences & Technology (NUST), Karachi Campus (PNEC), Habib Ibrahim Rahmatullah Rd., Karachi 74500, Pakistan