Title page for ETD etd-10252011-212630


Type of Document Master's Thesis
Author Walraven, Justin Stewart
Author's Email Address walraven@vt.edu
URN etd-10252011-212630
Title Design of an Arbitrary Waveform Generator for Power System Perturbation
Degree Master of Science
Department Electrical and Computer Engineering
Advisory Committee
Advisor Name Title
Boroyevich, Dushan Committee Chair
Mattavelli, Paolo Committee Member
Southward, Steve C. Committee Member
Keywords
  • Impedance
  • Stability
  • Three Phase
Date of Defense 2011-08-15
Availability unrestricted
Abstract
In this thesis, the design of a voltage-source inverter (VSI)-based three-phase impedance analyzer’s perturbation injection unit (PIU) is described including all relevant power stage and control design. Both series and shunt injection are examined from .1 Hz to 1000Hz. Both types of injection are performed using only energy from the system under test stored in a DC link capacitor. Sinusoidal, square (pulse), and chirp perturbation waveforms are explored. Results from a constructed realization of the design are presented, and the limits of the device characterized. The maximum achievable perturbation power is 10 kW in shunt and 8 kW in series on a 460 V, 100 kW bus. Using the same conditions, maximum power is achievable from 10Hz to 100Hz, at .1Hz, .72 kW is achievable, and at 1000Hz, 6.0 kW is achievable.
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