FPGA Implementation of BLDC Motor Driver with Hall Sensor Feedback

Abstract

The difficulty in designing the control drivers for BLDC (BrushLess Direct Current) motors occurs when the positioning of the HALL sensors on stator circumference is not known. This paper describes the original hardware design and implementation of a control driver for BLDC motors with HALL positioning sensors by using a development board with Xilinx Spartan 6 FPGA (Field Programmable Gate Array) chip. Inside the FPGA chip, the control logic for the external power driver was implemented at the schematic level, which provides additional optimization possibilities as opposed to a hardware description language. The results were experimentally validated by testing the physical implementation.