Title :
Control scheme for source voltage sensorless PWM converters under source voltage unbalance
Author :
Eunsoo Jung ; Myoungho Kim ; Seung-Ki Sul
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., Seoul, South Korea
fDate :
Aug. 30 2011-Sept. 1 2011
Abstract :
This paper presents a control scheme for three-phase PWM converters which have no ac-side voltage sensors. In spite of no source voltage sensors, the proposed method estimates exact grid angle and voltages, which are the essential parts for the power transfer between DC link of PWM converter and AC source. The method works not only in normal balanced AC source case but also in faulty unbalanced cases. The validity of proposed method has been evaluated by computer simulation and experimental result with 10kW PWM Voltage source converter.
Keywords :
PWM power convertors; sensorless machine control; DC link; PWM converters; power 10 kW; power transfer; sensorless control scheme; voltage source converters; Current control; Cutoff frequency; Frequency control; Observers; Pulse width modulation converters; Sensorless control; Voltage control; Estimation technique; Sensorless control; Three-phase system; Voltage Source Converter (VSC);
Conference_Titel :
Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-61284-167-0
Electronic_ISBN :
978-90-75815-15-3
