Title :
A new concept for reconstruction of the input phase currents of a three-phase/switch/level PWM (VIENNA) rectifier based on neutral point current measurement
Author :
Kolar, Johann W. ; Stogerer, F. ; Minibock, Hann ; Ertl, Hans
Author_Institution :
Dept. of Electr. Drives & Machines, Tech. Univ. Wien, Austria
Abstract :
A novel concept utilizing the neutral point current information which is gained by an AC current sense transformer or a shunt for observer-based continuous reconstruction of the input phase currents of a three-phase/switch/level boost-type PWM (VIENNA) rectifier system is proposed. The basic principle of operation and the dimensioning of the observer circuit which in modified form also could feature an output voltage earth fault detection are discussed in detail. Furthermore, results of a practical application of the system in connection with a highly dynamic ramp comparison mains current control of a 10 kW laboratory model of the VIENNA rectifier are given
Keywords :
PWM power convertors; electric current control; electric current measurement; observers; rectifying circuits; 10 kW; AC current sense transformer; VIENNA rectifier; highly dynamic ramp comparison mains current control; input phase currents; input phase currents reconstruction; neutral point current information; neutral point current measurement; observer-based continuous reconstruction; output voltage earth fault detection; three-phase/switch/level PWM rectifier; Circuits; Current control; Current measurement; Force measurement; Gain measurement; Laboratories; Phase measurement; Pulse width modulation; Rectifiers; Switches;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.878824
