TY - GEN
T1 - Near-Field Coupling Mitigation of the Noise from High Voltage DC-Link Decoupling Capacitors in Voltage Source Converters
AU - Wu, Yuxuan
AU - Choksi, Kushan
AU - Defaz, Samuel
AU - Luo, Fang
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - With the adoption of wide-bandgap (WBG) devices, high-voltage DC-link decoupling capacitors in high-density bidirectional converters (HDBCs) are increasingly prone to generating near-field (NF) coupling noise, which can affect surrounding circuits. This NF coupling can negatively impact the stable operation of voltage source converters, leading to issues such as mistriggering of switching devices and electromagnetic interference (EMI) in low-voltage systems. This paper investigates strategies to mitigate NF coupling noise from high-voltage DC-link decoupling capacitors (DCAPs) through a comprehensive workflow combining finite element analysis (FEA) and circuit simulation tools. The study provides design guidelines for optimizing DCAP placement to minimize NF radiation while achieving effective EMI suppression. This research aims to bridge the gap between the application of DCAPs for EMI differential mode (DM) noise control and NF coupling management in highly integrated power converter designs.
AB - With the adoption of wide-bandgap (WBG) devices, high-voltage DC-link decoupling capacitors in high-density bidirectional converters (HDBCs) are increasingly prone to generating near-field (NF) coupling noise, which can affect surrounding circuits. This NF coupling can negatively impact the stable operation of voltage source converters, leading to issues such as mistriggering of switching devices and electromagnetic interference (EMI) in low-voltage systems. This paper investigates strategies to mitigate NF coupling noise from high-voltage DC-link decoupling capacitors (DCAPs) through a comprehensive workflow combining finite element analysis (FEA) and circuit simulation tools. The study provides design guidelines for optimizing DCAP placement to minimize NF radiation while achieving effective EMI suppression. This research aims to bridge the gap between the application of DCAPs for EMI differential mode (DM) noise control and NF coupling management in highly integrated power converter designs.
KW - DC-link design
KW - Decoupling capacitor
KW - Electromagnetic interference
KW - Gate drives
KW - Near-field
UR - https://www.scopus.com/pages/publications/105004810330
U2 - 10.1109/APEC48143.2025.10977297
DO - 10.1109/APEC48143.2025.10977297
M3 - Conference contribution
AN - SCOPUS:105004810330
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2582
EP - 2588
BT - APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025
Y2 - 16 March 2025 through 20 March 2025
ER -