Masters Theses


Hailong Zhou


"River-based hydrokinetic turbine power generation systems have been studied to introduce an effective energy flow control method. Hydrokinetic turbine systems share a lot of similarities with wind turbine systems in terms of physical principles of operation, electrical hardware, and variable speed capability for optimal energy extraction. A multipole permanent magnet synchronous generator is used to generate electric power because of its ability to reach high power density and high thrust at low speed. A 3-phase diode rectifier is used to convert AC power from the generator into DC power and a boost converter is used to implement energy flow control. On the load side, an electronic voltage load is used for test purposes to simulate a constant DC bus voltage load, such as a battery. A dynamic model of the entire system is developed and used to analyze the interaction between the mechanical structure of water turbine and electrical load of the system, based on which a maximum power point tracking control algorithm is developed and implemented in the boost converter. Simulation and experimental results are presented to validate the proposed MPPT control strategy for hydrokinetic turbine system. Similar to the wind turbine system, hydrokinetic turbine system usually requires a gear box to couple the turbine and the generator because the operating speed range for the hydrokinetic turbine is much lower than the operating speed range for most PMSGs. However, the gear box coupling adds additional transmission power losses. Therefore a high-thrust low-speed permanent magnet synchronous generator is designed to couple with the water turbine without a gear box"--Abstract, page iii.


Kimball, Jonathan W.

Committee Member(s)

Corzine, Keith, 1968-
Ferdowsi, Mehdi


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


United States. Office of Naval Research


Missouri University of Science and Technology

Publication Date

Spring 2012


xii, 83 pages

Note about bibliography

Includes bibliographical references.


© 2012 Hailong Zhou, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Electric motors, Synchronous
Marine turbines
Permanent magnet motors -- Design
Turbines -- Design and construction

Thesis Number

T 9993

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