Title :
A Initial Current Control Method for PWM Converter Against Low DC-Link Voltage
Author :
Gu, Bon-Gwan ; Choi, Jun-Hyuk ; Jung, In-Soung
Author_Institution :
Korea Electron. Technol. Inst., Bucheon, South Korea
Abstract :
When a PWM converter starts operation with non zero load, the initial DC-link voltage could not be high enough to generate converter output voltage vector for current regulation. This lack of converter voltage vector could cause unregulated over-current at converter operation start. In this paper, a new current control scheme is proposed for a PWM converter against low DC-link voltage. To avoid unregulated over-current, the proposed control scheme regulates only one phase current and generates the current command considering the uncontrolled current magnitude information calculated in advance. Simulation is performed with resistive load, and the results support the validity of the proposed scheme.
Keywords :
AC-DC power convertors; PWM power convertors; electric current control; PWM converter; converter output voltage vector; initial current control method; low DC-link voltage; nonzero load; pulse width modulated power converters; unregulated over-current; Current control; Current measurement; Diodes; Low voltage; Power conversion; Power system simulation; Pulse width modulation; Pulse width modulation converters; Resistors; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 2009. IAS 2009. IEEE
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4244-3475-6
Electronic_ISBN :
0197-2618
DOI :
10.1109/IAS.2009.5324873
