A Study on Modified Model Predictive DPC of Rectifiers

Abstract:

In this paper, we study a modified predictive direct power control scheme (P-DPC).This scheme which based on model predictive control (MPC) uses a discrete rectifier model to infer the predictive direct power control theme again, and selects the operating time of voltage vector and voltage vector to realize fixed switching frequency through setting the minimum power errors of each sampling period. This control scheme has a lower switching frequency compared to MP-DPC; and it is still simple and clear implemented in the stationary reference frame directly, meanwhile, it does not need PI controllers or voltage-oriented controllers compared to other developed control schemes. We make simulations using MATLAB. The result show the excellence of this novel predictive direct power control scheme through improving the switching frequency, current THD and active power and reactive power quality compared to MP-DPC and LUT-DPC.

• Periodical: Applied Mechanics and Materials (Volume 441)
• Pages: 328-331
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.441.328
• Online since: December 2013
• Authors: Hui Zhao*, Biao Wang, Hong Jun Wang, You Jun Yue
• Keywords: Fixed Switching Frequency, Predictive Direct Power Control, Rectifier, Sampling Frequency

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