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A New control strategy for neutral-point-clamped active rectifier based on DSP-FPGA

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3 Author(s)
Fei Wang ; Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China ; Qiongxuan Ge ; Yanmin Zhang

Three phase three level neutral point clamped (NPC) rectifier is a popular topology for power converter front-ends to achieve controllable DC voltage. In this paper, its mathematical model is analyzed and a dual-loop control strategy is adopted to regulate both DC voltage and input power factor. Instead of space vector PWM, an improved multi-level carrier based PWM is presented. The control system is developed on DSP and a FPGA is employed to generate the PWM signals. The effectiveness of the proposed scheme is verified by the experimental results.

Published in:

Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on

Date of Conference:

15-18 Nov. 2009