Title :
Bit-Stream control of three phase reversible rectifiers
Author :
Bradshaw, Jonathan ; Madawala, Udaya ; Patel, Nitish
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland, New Zealand
Abstract :
Bit-stream is a new technique for controlling power electronics applications by interconnecting appropriate control elements inside an FPGA. This paper presents a Bit-Stream based controller for a three phase, 400 V / 7 kVA reversible rectifier, which is used to transfer power between an AC line and a DC bus in a controlled manner. The proposed controller is based on vector control techniques, which provide independent control of the real and reactive power flow through the rectifier, and is the first Bit-stream based vector controller to be reported in literature. The controller is implemented by interconnecting Bit-Stream controller blocks, which implement Clarke and Park´s Transformations, phase locked loops, current controllers and space vector modulation. Simulations using Matlab / Simulink and ModelSim show that the controller successfully manages the power flow through the rectifier, and is not disturbed by sudden changes in the AC line voltage. The inherently parallel nature of Bit-Stream control systems ensures that the addition of extra functionality to the controller will not affect system performance, whereas microprocessor based systems may reach execution time limits as control complexity increases.
Keywords :
electric current control; field programmable gate arrays; load flow control; reactive power control; rectifying circuits; AC line voltage; Clarke transformations; FPGA; Matlab / Simulink; ModelSim; Park´s transformations; apparent power 7 kVA; bit-stream control; current controllers; phase locked loops; power electronics control; reactive power flow control; space vector modulation; three phase reversible rectifiers; vector control techniques; voltage 400 V; Active Front End; Bit-Stream Control; FPGA; Power Control; Power Electronics; Reversible Rectifier;
Conference_Titel :
Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-2893-9
Electronic_ISBN :
978-1-4244-2893-9
DOI :
10.1109/ECCE.2009.5316274