Title :
Modeling and control of charge-pumped reboost converter for pv applications
Author :
Hutchens, Christopher ; Yu, Wensong ; Lai, Jih-Sheng
Author_Institution :
Future Energy Electron. Center (FEEC), Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Two-stage, grid-tied Photovoltaic (PV) systems commonly use boost-type converters at the front end. The charge-pumped reboost converter is a high-step-up dc-dc converter with continuous input-current which is suitable for this purpose. Using a tapped-inductor boost topology for the small-signal model, a high-bandwidth input-voltage loop can be designed which rapidly tracks reference changes, source transients, and can reject disturbances from the load. The practicality of this model is verified experimentally with frequency response analysis, transient response, and system-level testing.
Keywords :
DC-DC power convertors; frequency response; photovoltaic power systems; power grids; power inductors; transient response; voltage control; charge pumped reboost converter; disturbance rejection; frequency response analysis; grid tied photovoltaic system; high bandwidth input voltage loop; step up dc-dc converter; tapped inductor boost topology; transient response; Capacitors; Charge pumps; Converters; Frequency response; Inductors; Topology; Transfer functions; DC-DC power conversion; Photovoltaic power systems; Voltage control;
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2010 IEEE 12th Workshop on
Conference_Location :
Boulder, CO
Print_ISBN :
978-1-4244-7462-2
Electronic_ISBN :
978-1-4244-7461-5
DOI :
10.1109/COMPEL.2010.5562396