Using gallium nitride DC-DC converter for speed control of BLDC motor

Utilizing GaN (Gallium Nitride) DC-DC converter for speed control of BLDC (Brushless DC) Motor is investigated in this paper. The proposed system replaces the well-known Si-based switches by GaN FETs which are faster by minimum ten times and much compact that it recedes the size of Switched Mode Power Supply (SMPS) application. The contemplated system uses a GaN-based DC-DC Resonant Converter to drive and regulate the speed of a BLDC Motor at a switching frequency as high as 100 kHz. The processor used is xPC target in conjunction with NI PCI-6251 Data Acquisition device with a capability of send/receive high frequency data between MATLAB/Simulink to hardware and vice versa. To establish the conduct of this system, both simulation and experimental outcomes have been illustrated. The high efficiency, high accuracy, and low power loss along with lower weight and volume of the converter are the advantages of this system.