Skip Ribbon Commands
Skip to main content
Pakistan Navy Engineering College (PNEC)
Dr Ashraf Yahyah
Assistant Professor
Department of Electrical Engineering

National University of Sciences and Technology (NUST)
PNS Jauhar, Habib Ibrahim Rehmatullah Road,Karachi
Tel : +92-21-48503083

Power Electronics, Power systems

PhD in Electrical, NED university of Engg.& Technology, Karachi, Pakistan

Dr. Ashraf Yahya received his BE(Electrical), MS(Electrical), and PhD (Electrical) from the NED University of Engineering and Technology, Karachi, Pakistan in year 1993,1999, and 2019 respectively. He Joined Engg. Academics in year 2002. Earlier he worked in Heavy industry as Assistant Manager/ Sr Electrical Engr for seven years, where he got ample exposure to operation & Maintenance of High Power-Electronics drives and Electrical Machines. 

Dr. Ashraf has authored a number of research articles published in high impact Journals and conference proceedings. He has taught numerous courses related to Power Engineering and Power Electronics. By virtue of his practical experience, he is able to correlate theory contents with practical applications.He was nominated to contest for award of overall University Best teacher-2013.

Dr Ashraf has played a pivotal role in the adoption, implementation and improvements of Outcome Based Education (OBE) system in B.E Electrical Program in PNEC. He has also been actively involved in the curriculum development of B.E(Electrical). Moreover, he is a certified lead auditor in Quality Management systems (QMS) and has performedthe duties of Quality Management Representative (QMR) for PNEC for a couple of years. Currently, he is working as the Head of undergrad Programme (HoUGP) in the department of Electronics & Power Engineering (EPE). 
His research-interests include Multilevel Inverter topologies & control, DC-DC converters, FACTS, and HVDC

Articles published in refereed journals


Ashraf Yahya, Syed M Usman Ali, "Optimum Pulse-width modulation strategy for a symmetric cascaded Multilevel Inverter", Int. J. Power Electronics, Vol. 11, No. 1, 2020, pp 38-55  (Scopus Indexed)


Ashraf Yahya, Syed M. Usman Ali, Arfan Ghani " New level doubling architecture of cascaded Multilevel inverter ", IET Power Electr.,  Vol.12, issue 8, pp 1891- 1902, 2019,pp  DOI: (JCR IF 2018:2.389)


Nusrat Husain, Ashraf Yahya, Nusrat Husain, Syed M Usman Ali, Naqash Khan. “Wind Energy and HVDC Systems-Promising Technologies”.Technocrat, ISSN: 7228-5690 Vol. 2 Issue 9,pp 368-39 December – 2017


Ashraf Yahya, Talha Waqar, Nusrat Husain, Syed M Usman Ali. “Hybrid Multilevel topology based High Power quality Inverter”, Journal of Multidisciplinary Engineering Science and Technology (JMEST) ISSN: 3159-0040 Vol. 2 Issue 9,pp 2428-2431 , 2015



Ashraf Yahya, Nusrat Husain, Syed M Usman Ali. “Multilevel Inverter-a survey for MV and HV applications. International Journal of Scientific & Engineering Research, Vol 6, Issue 1, pp 1453-1460, ISSN 2229-5518, 2015



Ashraf Yahya, “Current trends in the design of on-load Tap changers”, Technocrat journal of sciences & Technology, pp. 9-11   ,ISSN:1728-5690, vol.3, 2008.


Ashraf Yahya, “Enhancement of Transmission lines Loadibility using FACTS controllers”, Technocrat journal of sciences & Technology, Vol.2, pp.14-19, ISSN:1728-5690, 2006


Papers published in refereed conference proceedings


Naqash Khan, Ashraf Yahya, Syed M. Usman Ali, Nusrat Husain " High Gain DC-DC Converter for Integration of Renewable Sources to Multilevel Inverter", International conference on emerging trends in Telecommunication and electronic Engineering(ICETE2),27-28Feb.2018.NEDUET,Khi,Pakistan


Nusrat Husain, Ashraf Yahya, Syed M. Usman Ali. "Modular Multilevel Converters - An Emerging Trend in Advanced HVDC Systems " in proceeding of 4th International Conference on Energy, Environment and Sustainable Development 2016 (EESD 2016), Nov 1-3, 2016,MUET, Jamshoro, Pakistan,


S Shan Ali, Ashraf Yahya, Dr Syed Nazir Alam, Ali Madani. “Comparative Study and Design Analysis of Multi-level Inverter for Hybrid Electric Vehicle”, Int conf. on Info tech & computer sciences-2016,22-23 June 2016, Institute of Business and Technology, Khi.


Ashraf Yahya,Syed M Usman Ali,” "A novel Topology of Symmetric Multilevel Inverter", In Proc. 2016 1st International Electrical Engineering Congress (IEEC 2016),  May. 13-14, 2016 in IEP Centre, Karachi, Pakistan

Over 16 years of teaching experience in the following institutions of repute:

-   NUST-PNEC Karachi, Pakistan

-   Usman Institute of Technology UIT, Hamdard University, Karachi, Pakistan


Courses taught:

-   Power Electronics

-   Power system Protection

-   Power Engineering

-   Power Transmission

-   Power Generation

-   Power System Analysis

-   Power Generation & Distribution

-   Electrical Machines

-   DC Machines & Drives

-   AC Machines & Drives

-   Electronics-1

-   Linear circuit Analysis

-   Semiconductor material, devices, and circuits 

Over 7 years of industry work experience in operation& Maintenance of High Power controlled rectifiers, Inverters, DC Motor Drives, HT/LT switchgear, Power Transformer, 10MW Synchronous Motors, DC Motors up to 7MW, in the following organizations:

-   Pakistan Steel (Assistant Manger)

-   International Industries Ltd (Senior Engr. Electrical & Electronics)