Date Available
12-13-2013
Year of Publication
2013
Degree Name
Master of Science in Electrical Engineering (MSEE)
Document Type
Master's Thesis
College
Engineering
Department/School/Program
Electrical Engineering
First Advisor
Dr. Aaron M. Cramer
Abstract
The output power variability of intermittent renewable sources can cause significant fluctuations in distribution system voltages. A local linear controller that exploits the capability of a photovoltaic inverter to provide both real and reactive power is described. This controller substitutes reactive power for real power when fluctuations in the output of the photovoltaic source are experienced. In this way, the inverter can help mitigate distribution system voltage fluctuations. In order to provide real and reactive to the grid, a three-phase grid-connected single-stage photovoltaic system with maximum power point tracking and power control is described. A method of reducing the current harmonic caused by resonance of the LC filter and transformer is presented. The local linear controller is examined using an example distribution system, and it is found that the controller is effective at mitigating voltage violations. The photovoltaic control system is examined using three-phase single-stage PV inverter system. The power control and damping system show good performance and stability under rapid change of irradiance.
Recommended Citation
Liu, Xiao, "Power control of single-stage PV inverter for distribution system volt-var optimization" (2013). Theses and Dissertations--Electrical and Computer Engineering. 36.
https://uknowledge.uky.edu/ece_etds/36
Included in
Controls and Control Theory Commons, Electrical and Electronics Commons, Power and Energy Commons
