TY - GEN
T1 - Investigation of Common-Mode EMI in Three-Phase Split-Phase Inverter
AU - Mirza, Abdul Basit
AU - Muneeb, Abdul
AU - Vala, Sama Salehi
AU - Luo, Fang
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Compared with the traditional two-level (2L) inverter, two-level Split-Phase topology (2L-SP) provides better cross-talk immunity without deadtime between the top and bottom devices. From the Common Mode (CM) EMI perspective, split inductors in 2L-SP tend to increase the CM noise path impedance and decrease the dV/dt across the device during the switching transition due to the interaction between split inductors and the semiconductor device's parasitic capacitance. This phenomenon, in turn, reduces the dV/dt of the CM voltage, making 2L-SP topology a promising candidate with lower CM emission for Wide Band Gap (WBG) devices-based 2L inverters, switching at high frequency. However, the CM EMI of 2L-SP and its comparison with 2L have yet to be analyzed comprehensively. This paper investigates conducted CM EMI emission of a SiC-based 2L-SP three-phase inverter with SPWM. At first, the derivation of the CM equivalent circuit model through frequency domain analysis is presented. This is followed by a comparative study of CM emission of 2L-SP three-phase inverter on a hardware prototype for different values of split inductance. The results show that increasing split-inductance significantly lowers the CM magnitude with a maximum reduction of 17.85 dB.
AB - Compared with the traditional two-level (2L) inverter, two-level Split-Phase topology (2L-SP) provides better cross-talk immunity without deadtime between the top and bottom devices. From the Common Mode (CM) EMI perspective, split inductors in 2L-SP tend to increase the CM noise path impedance and decrease the dV/dt across the device during the switching transition due to the interaction between split inductors and the semiconductor device's parasitic capacitance. This phenomenon, in turn, reduces the dV/dt of the CM voltage, making 2L-SP topology a promising candidate with lower CM emission for Wide Band Gap (WBG) devices-based 2L inverters, switching at high frequency. However, the CM EMI of 2L-SP and its comparison with 2L have yet to be analyzed comprehensively. This paper investigates conducted CM EMI emission of a SiC-based 2L-SP three-phase inverter with SPWM. At first, the derivation of the CM equivalent circuit model through frequency domain analysis is presented. This is followed by a comparative study of CM emission of 2L-SP three-phase inverter on a hardware prototype for different values of split inductance. The results show that increasing split-inductance significantly lowers the CM magnitude with a maximum reduction of 17.85 dB.
KW - Common Mode (CM)
KW - Electromagnetic Interference (EMI)
KW - Frequency Domain Analysis
KW - Silicon Carbide (SiC)
KW - Split-Phase Inverter
UR - https://www.scopus.com/pages/publications/85173850527
U2 - 10.1109/EMCSIPI50001.2023.10241575
DO - 10.1109/EMCSIPI50001.2023.10241575
M3 - Conference contribution
AN - SCOPUS:85173850527
T3 - 2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023
SP - 522
EP - 528
BT - 2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023
Y2 - 29 July 2023 through 4 August 2023
ER -