en Converters Converters Research Paper Research Paper <div style="text-align: justify;"><span style="color:#000000;"><span style="font-size:12px;"><span style="font-family:tahoma;"><span class="headingsandsub-headingsChar">In AC-DC power conversion, active front end rectifiers offer several advantages over diode rectifiers such as bidirectional power flow capability, sinusoidal input currents and controllable power factor. A digital finite control set model predictive controller based on fixed-point computations of an active front end rectifier with unity displacement of input voltage and current to improve dynamic response has been presented in this paper. Here by using a predictive cost function and fixed-point computations, the optimal switching state to be applied in the next sampling is selected. The low-cost architecture is implemented on a FPGA platform. Designed architecture is constructed based on fixed-point arithmetic with minimal functional units. The control algorithm, which is used in this architecture, is Finite-Set Model Predictive Control (FS-MPC). Compared with other controllers, this controller provides a much better dynamic performance. Finally, in order to evaluate the accuracy of the fixed-point computations several cases for various loading conditions and word lengths are verified.</span></span></span></span></div> Active Front End Rectifier,Fixed-Point Computations,Low-Cost Architecture,Predictive Control,Word Length, 1 10 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-2154-1&slc_lang=en&sid=1 A. Hamidi as58hamidi@yahoo.com 180031947532846006212 180031947532846006212 No Electrical Engineering Department, Razi University, Kermanshah, Iran A. Ahmadi aahmadi70@gmail.com 180031947532846006213 180031947532846006213 No Department of Electrical and Computer Engineering, University of Windsor, Windsor, ON, Canada S. Karimi shahramkarimi@razi.ac.ir 180031947532846006214 180031947532846006214 Yes Electrical Engineering Department, Razi University, Kermanshah, Iran