Conference proceedings article
Design and Potential of EMI CM Chokes with Integrated DM Inductance
Publication Details
Authors: | Ali, M.; Bushra, R.; Friebe, J.; Mertens, A. |
Editor: | European Centre for Creative Economy |
Publisher: | Institute of Electrical and Electronics Engineers Inc |
Place: | United States |
Publication year: | 2022 |
Pages range : | 1-10 |
Book title: | 24th European Conference on Power Electronics and Applications EPE 2022 ECCE Europe |
ISBN: | 978-1-6654-8700-9 |
Abstract
A common-mode (CM) choke is one of the major filtering components used in electromagnetic interference (EMI) filters that impede the flow of common-mode current in the system. Besides a common-mode choke also offers a finite differential-mode (DM) inductance in the form of leakage inductance. In general the leakage inductance is small which necessitates extra DM inductors and leads to a large filter size. In this paper a single-phase CM choke is designed with an integrated DM inductance for use in EMI filters based on a flux bypass inside the toroidal core. The DM inductance of these chokes can be altered by redesigning the windings while the CM inductance remains identical to a conventional CM choke. The design and effectiveness of them are further supported by theoretical simulated and measurement results and core saturation analysis. Finally an extension to three-phase CM chokes with integrated three-phase DM inductance is discussed.
A common-mode (CM) choke is one of the major filtering components used in electromagnetic interference (EMI) filters that impede the flow of common-mode current in the system. Besides a common-mode choke also offers a finite differential-mode (DM) inductance in the form of leakage inductance. In general the leakage inductance is small which necessitates extra DM inductors and leads to a large filter size. In this paper a single-phase CM choke is designed with an integrated DM inductance for use in EMI filters based on a flux bypass inside the toroidal core. The DM inductance of these chokes can be altered by redesigning the windings while the CM inductance remains identical to a conventional CM choke. The design and effectiveness of them are further supported by theoretical simulated and measurement results and core saturation analysis. Finally an extension to three-phase CM chokes with integrated three-phase DM inductance is discussed.
Keywords
3-D Electromagnetic Modeling Choke DM Inductance Electromagnetic Interference (EMI) Filters Filter Optimization Mutual Couplings
