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Journal ArticleDOI

Passive and Active Hybrid Integrated EMI Filters

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TLDR
In this paper, two planar integrated EMI filter structures that reduce the filter volume and that are based on standard printed circuit board (PCB) process technology are presented, which results in a volume reduction of 24% compared to the discrete solution.
Abstract
Two new planar integrated electromagnetic interference (EMI) filter structures that reduce the filter volume and that are based on standard printed circuit board (PCB) process technology are presented in this paper. First, a passive integrated EMI filter is presented, which results in a volume reduction of 24% compared to the discrete solution. However, this filter requires a planar ferrite core for the common-mode inductor. In order to eliminate the ferrite core and reduce the filter volume further (-40% versus discrete filter), a passive integrated structure is combined with an active EMI filtering circuit. The transfer function, the volume, and the losses of the discrete and the two integrated filters, which are designed for a 600 W power-factor-corrected converter, are compared.

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Citations
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Conducted EMI Mitigation Techniques for Switch-Mode Power Converters: A Survey

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A Novel ZVZCS Full-Bridge DC/DC Converter Used for Electric Vehicles

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A ZVS Interleaved Boost AC/DC Converter Used in Plug-in Electric Vehicles

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EMI Filter Design for a 1 MHz, 10 kW Three-Phase/Level PWM Rectifier

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A New Control Approach Based on the Differential Flatness Theory for an AC/DC Converter Used in Electric Vehicles

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References
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Journal ArticleDOI

Using transformer parasitics for resonant converters - a review of the calculation of the stray capacitance of transformers

TL;DR: A new simple procedure for modeling parasitic capacitances that is based on the known approaches is proposed and the resulting equations are verified by measurements on four different high voltage transformers.
Journal ArticleDOI

Differential Mode Input Filter Design for a Three-Phase Buck-Type PWM Rectifier Based on Modeling of the EMC Test Receiver

TL;DR: For a three-phase buck-type pulsewidth modulation rectifier input stage of a high-power telecommunications power supply module, a differential-mode (DM) electromagnetic compatibility (EMC) filter is designed for compliance to CISPR 22 Class B.
Journal ArticleDOI

Improving the Characteristics of integrated EMI filters by embedded conductive Layers

TL;DR: In this paper, a structural winding capacitance cancellation method for inductors is proposed, where a conductive ground layer is embedded in the planar inductor windings, and the structural capacitance between the inductor winding and this embedded layer is utilized to cancel the parasitic wound capacitance.
Journal ArticleDOI

Design method and material technologies for passives in printed circuit Board Embedded circuits

TL;DR: In this article, the authors present an analytic approach for the design of planar magnetic components, considering the magnetic flux distribution in the core and in the winding area, which allows a precise calculation of the inductivity as well as the losses in the device and their distribution.
Journal ArticleDOI

Viability of active EMI filters for utility applications

TL;DR: In this paper, the application of active circuitry to increase the performance per size and cost of utility-side EMI filters is considered and the major problems are power line frequency (60 Hz) rejection and the compensation of the feedback loop, which is influenced by the wide-ranging utility impedance.
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