Title :
Reduction of digital PWM limit ring with novel control algorithm
Author :
Lu, Zhengyu ; Qian, Zhaoming ; Zeng, Yong ; Yao, Wenxi ; Chen, Guozhu ; Wang, Yousheng
Author_Institution :
Zhejiang Univ., Hangzhou, China
Abstract :
A novel algorithm for enhancing digital PWM resolution is put forward, by which a limit ring relating to quantization is suppressed dramatically. The quantization error is corrected within the PWM module. It isn´t allowed to propagate into the output terminal directly. A DSP controlled converter can operate at 100 kHz without precision degradation
Keywords :
PWM power convertors; digital control; digital signal processing chips; error correction; 100 kHz; DSP controlled converter; control algorithm; digital PWM limit ring reduction; digital PWM resolution enhancement; duty ratio resolution; output terminal; quantization error correction; Clocks; Counting circuits; Digital control; Digital signal processing; Frequency conversion; Pulse width modulation; Quantization; Sampling methods; Switching converters; Switching frequency;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.911696
