Inductor topologies with substantial common-mode and differential-mode inductance

a topology and differential mode technology, applied in the direction of inductance, continuous variable inductance/transformer, core/yokes, etc., can solve the problem that the single traditional inductor is not effective in simultaneously filtering both cm and dm noise, and achieve the effect of reducing the size, weight, and complexity of the electromagnetic interference filtering circui
US20080074227A1Inactive Publication Date: 2008-03-27FORD GLOBAL TECH LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
FORD GLOBAL TECH LLC
Publication Date
2008-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

An inductor (160) includes a core (162) that has a window (164). The core (162) includes a first core member (168) and a second core member (170). A first winding (176) is coupled to the first core member (168) and a second winding (178) is coupled to the second core member (170). A cross-member (172, 174) is coupled at least partially across the window (178) and is conductively enabling flux flow between the first core member (168) and the second core member (170). An electronic circuit (100) includes an input terminal (118), an inductor (102), and an output terminal (E′, F′). The inductor (102) is coupled to the input terminal and has only a single inductive core (162). The inductor (102) is coupled to filter both common-mode noise and differential-mode noise. The load terminal is coupled to and receives filtered common-mode and differential-mode current from the inductor (102).
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Description

TECHNICAL FIELD

[0001] The present invention relates to vehicle and non-vehicle electronic and electrical systems and components. More particularly, the present invention is related to inductor topologies for common-mode and differential-mode filtering circuits and the like.BACKGROUND OF THE INVENTION

[0002] A variety of power converters are used throughout industry. Power converters are often utilized in electronic circuits for direct current (DC) or alternate current (AC) conversion to supply power to electric motors. Such conversion is performed on hybrid electric vehicles, fan drives, washing machines, refrigerators, and other various machines and equipment to improve efficiency and performance, as well as to minimize noise.

[0003] Certain electronic circuits exhibit high switching speeds. At high switching speed, the electronic circuits generate common-mode (CM) and differential-mode (DM) electromagnetic interference (EMI) noises. Thus, CM and DM filters are incorporated to remove su...

Claims

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