SEMICONDUCTOR INTEGRATED CIRCUITS

A digital prediction algorithm for a single-phase boost PFC

Wang Qing, Chen Ning, Sun Weifeng, Lu Shengli and Shi Longxing

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Abstract: A novel digital control algorithm for digital control power factor correction is presented, which is called the prediction algorithm and has a feature of a higher PF (power factor) with lower total harmonic distortion, and a faster dynamic response with the change of the input voltage or load current. For a certain system, based on the current system state parameters, the prediction algorithm can estimate the track of the output voltage and the inductor current at the next switching cycle and get a set of optimized control sequences to perfectly track the trajectory of input voltage. The proposed prediction algorithm is verified at different conditions, and computer simulation and experimental results under multi-situations confirm the effectiveness of the prediction algorithm. Under the circumstances that the input voltage is in the range of 90-265 V and the load current in the range of 20%-100%, the PF value is larger than 0.998. The startup and the recovery times respectively are about 0.1 s and 0.02 s without overshoot. The experimental results also verify the validity of the proposed method.

Key words: PFC

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    Received: 20 August 2015 Revised: 24 June 2012 Online: Published: 01 December 2012

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      Wang Qing, Chen Ning, Sun Weifeng, Lu Shengli, Shi Longxing. A digital prediction algorithm for a single-phase boost PFC[J]. Journal of Semiconductors, 2012, 33(12): 125007. doi: 10.1088/1674-4926/33/12/125007 Wang Q, Chen N, Sun W F, Lu S L, Shi L X. A digital prediction algorithm for a single-phase boost PFC[J]. J. Semicond., 2012, 33(12): 125007. doi: 10.1088/1674-4926/33/12/125007.Export: BibTex EndNote
      Citation:
      Wang Qing, Chen Ning, Sun Weifeng, Lu Shengli, Shi Longxing. A digital prediction algorithm for a single-phase boost PFC[J]. Journal of Semiconductors, 2012, 33(12): 125007. doi: 10.1088/1674-4926/33/12/125007

      Wang Q, Chen N, Sun W F, Lu S L, Shi L X. A digital prediction algorithm for a single-phase boost PFC[J]. J. Semicond., 2012, 33(12): 125007. doi: 10.1088/1674-4926/33/12/125007.
      Export: BibTex EndNote

      A digital prediction algorithm for a single-phase boost PFC

      doi: 10.1088/1674-4926/33/12/125007
      Funds:

      The Natural Science Foundation of the Jiangsu province

      • Received Date: 2015-08-20
      • Accepted Date: 2012-04-11
      • Revised Date: 2012-06-24
      • Published Date: 2012-11-13

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