Date of Award


Document Type


Degree Name


Organizational Unit

Daniel Felix Ritchie School of Engineering and Computer Science

First Advisor

David Wenzhong Gao, Ph.D.

Second Advisor

Jun Zhang

Third Advisor

Mohammad Matin

Fourth Advisor

Cynthia McRae


Power system, Wind turbine, Engine turbine systems


Wind is one of the most popular renewable energy sources and it has the potential to become the biggest energy source in future. Since the wind does not always blow constantly, the output wind power is not constant which may make some problem for the power grid. According to the grid code which is set by independent system operator, ISO, wind turbine generator systems need to follow some standards such as the predetermined acceptable power fluctuations.

In order to smooth the output powers, the energy storage system and some power electronics modules are employed. The utilized power electronics modules in the wind turbine system can pursue many different goals, such as maintaining the voltage stability, frequency stability, providing the available and predetermined output active and reactive power. On the other side, the energy storage system can help achieving some of these goals but its main job is to store the extra energy when not needed and release the stored energy when needed. The energy storage system can be designed in different sizes, material and also combination of different energy storage systems (hybrid designs). Combination of power electronics devises and also energy storage system helps the wind turbine systems to smooth the output power according to the provided standards. In addition prediction of wind speed may improve the performance of wind turbine generator systems.

In this research study all these three topics are studied and the obtained results are written in 10 papers which 7 of them are published and three of them are under process.

Publication Statement

Copyright is held by the author. User is responsible for all copyright compliance.

Rights Holder

Hamed Babazadehrokni


Received from ProQuest

File Format




File Size

103 p.


Electrical engineering