1. Department of Electrical and Electronics Engineering, Vishnu Institute of Technology, Bhimavaram, Andhra Pradesh 534 202, India (Corresponding author), e-mail: pathyeee@yahoo.co.in, https://orcid.org/0000-0001-7579-8043
2. Department of Electrical and Electronics Engineering, Hindusthan College of Engineering and Technology, Coimbatore 641 050, Tamil Nadu, India