DSP-Based Single-Stage Full Bridge Power Factor Correction Technology Research

Abstract:

This paper introduces a power factor correction (PFC) main circuit adopting novel full bridge topology, in which the clamped capacitor limits voltage stress on the switch tube, reduces output voltage ripple, and improves the response velocity; TMS320F2812 series DSP, produced by TI company, is used as the main control device in this system, and the DSP fixes the switch frequency at 20kps. It uses alternate sampling method to avoid the switching noise taken into the system. And then, both the validity of the theoretical analysis and the effectiveness of the control strategy are verified by the prototype test.

• Periodical: Advanced Materials Research (Volumes 546-547)
• Pages: 326-331
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.546-547.326
• Online since: July 2012
• Authors: Shu Qiang Wang, Hui Zhao, Kang Wu
• Keywords: Digital Control, Digital Signal Processor (DSP), Passive Clamping, PFC, Single-Stage Full Bridge

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