Common Mode Filter Device

A common-mode filter and source filter technology, applied in output power conversion devices, inductors, broadband transformers, etc., can solve the problems of increasing installation costs and reducing power conversion efficiency of transformers, and achieve the effect of reducing costs.
CN103477544BActive Publication Date: 2017-09-12KERRYJ INVESTMENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KERRYJ INVESTMENT
Publication Date
2017-09-12

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Abstract

A common mode filter arrangement for regulating aspects of power conversion by a power converter from an external source, such as a solar panel, to another external circuit, wherein the common mode filter arrangement substantially attenuates The switching frequency of the power converter plus the common-mode voltage at harmonics, and wherein the common-mode filter arrangement has a series connection with the power converter to support the common-mode voltage difference between the power converter ports and divide the common-mode current common-mode filter controlled at acceptable levels. The power converter may be single-phase, but is preferably multi-phase.
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Description

technical field

[0001] The present invention relates to an arrangement for power converter and inverter systems using an active common mode filter. In particular, but not limited thereto, the present invention relates to a common mode filter arrangement for regulating aspects of power conversion from an external source, such as a solar panel, to a utility grid. Background technique

[0002] Power converters are used to transfer power between circuits. Each circuit is connected to a different power port of the power converter. Each power port has at least two power conductors. Power port voltages are characterized by differential mode (DM) voltages and common mode (CM) voltages. DM voltage is the potential difference between a pair of electrical conductors. The CM voltage is the average potential difference between all power conductors and a reference potential such as ground (earth). Similarly, the power port current is characterized by DM current and CM current. DM cu...

Claims

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