FPGA Based Dual Controller Design for EMI Reduction in Dc-Dc Converters

Abstract

In high frequency electronic power converters, the suppression of Electromagnetic Interference (EMI) and the improvement of Electromagnetic Compatibility (EMC) have become important. Field Programmable Logic Array (FPGA) has become a low-cost platform offering the ability for power electronics to create unique EMC control techniques. In FPGA, however, it is complicated to accomplish some of the features required in the power electronic control system. The key difficulties are related to the operation of the fixed point, and the need to change the dynamic number range. Constructing filters to comply with the EMI limits is a significant part of the production cost of power converters. Therefore, a simple yet powerful dual controller based FPGA is therefore discussed to provide a substantial motor control for noise reduction. A model of a prototype has been tested and hardware findings indicate a substantial drives with low performance requirements. In terms of speed and torque, the theoretical algorithms, hardware information and experimental findings are presented and discussed.