Title :
Digital implementation of a unity-power-factor constant-frequency DCM boost converter
Author :
Ye, Zhen Z. ; Jovanovic, Milan M. ; Irving, Brian T.
Author_Institution :
Power Electron. Lab., Delta Products Corp., Research Triangle Park, NC
Abstract :
A DSP implementation of digital control for constant-frequency, unity-power-factor, and discontinuous-conduction-mode boost rectifier is described. By employing variable-duty-cycle control, the power factor of over 0.99 is achieved in the entire universal line-voltage range (90-264 V). In addition, the transient response of the rectifier is optimized by utilizing a nonlinear PI-controller with anti windup that is independently optimized for U.S. line-voltage range (90-132 V) and for European line-voltage range (180-264 V) and by temporarily increasing the bandwidth of the control loop during transients. The performance of the proposed DSP control was verified on a 100-kHz, 400-W unity-power-factor rectifier prototype
Keywords :
AC-DC power convertors; PI control; digital control; digital signal processing chips; frequency control; optimisation; power factor correction; rectifying circuits; transient response; 100 kHz; 180 to 264 V; 400 W; 90 to 132 V; 90 to 264 V; DSP; European line-voltage range; PFC; U.S. line-voltage range; bandwidth; boost converter; digital control; digital implementation; digital signal processor; discontinuous-conduction-mode boost rectifier; nonlinear PI-controller; optimization; power factor correction; transient response; unity-power-factor; variable-duty-cycle control; Bandwidth; Degradation; Digital control; Digital signal processing; Feeds; Reactive power; Rectifiers; Switches; Transient response; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1453074
