TY - GEN
T1 - Three-Phase Buck Rectifier Based on SiC MOSFETs Used in Power Factor Correction
AU - Niu, Zhizhao
AU - Cheng, Wei
AU - Chen, Yang
AU - Wang, Laili
AU - Qi, Zhiyuan
AU - Song, Shaojie
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/5
Y1 - 2018/5
N2 - This paper presents a power factor correction (PFC) module based on SiC MOSFETs and SiC Schottky diodes for aircraft power system. The structure of the PFC module is a three-phase buck rectifier cascade with a DC/DC boost converter. The first stage of the structure can attenuate the harmonic current in grid side current and realize the unity power factor. The second stage is a boost converter to convert the first stage output 200V DC voltage to output 270V DC voltage. This two stages cascade structure can also fully use the characteristics of three-phase buck rectifier's ability to limit the current when an output short circuit happened and extend output voltage range. A three-loop direct current control strategy based on the dq rotating coordinate system is proposed. This control strategy can successfully maintain the output voltage of the three-phase buck rectifier. In addition, applying seven-segment SVPWM modulation scheme can improve the utilization rate of the dc current, so that the system can realize higher power level. A 115Vacrms/400Hz input voltage PFC module model is built in Simulink/MATLAB, and the simulation results proof the feasibility of this cascade structure and three-loop direct current control strategy. A 115Vacrms/50Hz input voltage, 1.5kW 200V output, 0.97 power factor, THD of the grid side current below 0.05 three-phase buck rectifier prototype based on SiC MOSFET and SiC Schottky diode (SBD) has been built up in lab. A low power whole PFC module prototype verify the effectiveness of this proposed cascade structure.
AB - This paper presents a power factor correction (PFC) module based on SiC MOSFETs and SiC Schottky diodes for aircraft power system. The structure of the PFC module is a three-phase buck rectifier cascade with a DC/DC boost converter. The first stage of the structure can attenuate the harmonic current in grid side current and realize the unity power factor. The second stage is a boost converter to convert the first stage output 200V DC voltage to output 270V DC voltage. This two stages cascade structure can also fully use the characteristics of three-phase buck rectifier's ability to limit the current when an output short circuit happened and extend output voltage range. A three-loop direct current control strategy based on the dq rotating coordinate system is proposed. This control strategy can successfully maintain the output voltage of the three-phase buck rectifier. In addition, applying seven-segment SVPWM modulation scheme can improve the utilization rate of the dc current, so that the system can realize higher power level. A 115Vacrms/400Hz input voltage PFC module model is built in Simulink/MATLAB, and the simulation results proof the feasibility of this cascade structure and three-loop direct current control strategy. A 115Vacrms/50Hz input voltage, 1.5kW 200V output, 0.97 power factor, THD of the grid side current below 0.05 three-phase buck rectifier prototype based on SiC MOSFET and SiC Schottky diode (SBD) has been built up in lab. A low power whole PFC module prototype verify the effectiveness of this proposed cascade structure.
KW - Silicon carbide(SiC) MOSFET
KW - cascade structure
KW - three loop control strategy
KW - three-phase buck rectifier
KW - wide output voltage range
UR - https://www.scopus.com/pages/publications/85068332008
U2 - 10.1109/WiPDAAsia.2018.8734527
DO - 10.1109/WiPDAAsia.2018.8734527
M3 - 会议稿件
AN - SCOPUS:85068332008
T3 - 2018 1st Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2018
SP - 106
EP - 111
BT - 2018 1st Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2018
Y2 - 16 May 2018 through 18 May 2018
ER -