Interleaved ACDC CRM PFC Converter Mason Fennel 1

Interleaved AC-DC CRM PFC Converter Mason Fennel 1, Xingxuan Huang 2, Jingjing Sun 2, Dr. Leon Tolbert 2 1 University of South Carolina 2 The University of Tennessee, Knoxville INTRODUCTION DC-DC boost converters extend battery life, increase output voltage and save space for design AC-DC converters are known as rectifiers, where an oscillating voltage is converted into a constant voltage Converting AC to DC can result in undesirable losses in efficiency, power factor (PF) and an increased total harmonic distortion (THD) Power Factor Correction (PFC) converters maintain a PF of just below 1 (~0. 98 -0. 99) and minimize THD to improve power quality This design implements a single phase bridgeless totem-pole configuration with Ga. N HEMTs for switching with a goal of 99% efficiency with an input voltage of 277 V AC and an output voltage of 450 V DC Figure 1. TIDA-00477 1 -k. W High Efficiency Digital Power Factor Converter (PFC) [2] DESIGN 48 V DC stepped up to 120 V DC DC-DC boost converter with voltage control loop DC-DC boost converter open loop Plot of output voltage vs. time for open loop boost converter Plot of output voltage vs. time for closed loop boost converter 2 -layer PCB schematic of capacitive load bank CONCLUSION AND FUTURE GOALS Bridgeless totem-pole configuration with Ga. N HEMTs indicates high efficiency of approximately 99% [1]. Contributions to date • PCB design for capacitive load bank to reduce output voltage ripple • Simulation of DC-DC boost converter implementing voltage control loop Future contributions • Population and testing of capacitive load bank • Simulation of totem-pole AC-DC PFC converter implementing voltage and current control loops • Construction and testing of PFC converter to achieve experimental results and compare to simulated results REFERENCES [1] L. Zhou et al. , “High-efficiency True Bridgeless Totem Pole PFC based on Ga. N HEMT: Design Challenges and Cost-effective Solution, ” in Proceedings of PCIM Europe 2015, Nuremberg, Germany, 2015. [2] "1 -k. W High Efficiency Digital Power Factor Converter (PFC) for Telecom/Server Power & Motor Drives. " TIDA-00477 1 -k. W High Efficiency Digital Power Factor Converter (PFC) for Telecom/Server Power & Motor Drives | TI. com. Accessed July 18, 2017. http: //www. ti. com/tool/TIDA-00477#0. This work was supported primarily by the ERC Program of the National Science Foundation and DOE under NSF Award Number EEC-1041877. Other US government and industrial sponsors of CURENT research are also gratefully acknowledged.