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US 6,617,941 B2Granted
Method for designing a filter system
AssigneeVacuumschmelze GmbH & Co. KG
InventorDirk Heumann
Life of this patent
Estimating the term…
Abstract
A filter system includes at least two longitudinal branches with longitudinal inductors and at least one filter section (B) and an adjacent filter section (A). The filter section (B) is provided with at least one transverse branch that is interposed between the longitudinal branches, the adjacent filter section (A) adjoining the transverse branch. The number of inductors of a filter section that arc wound around different magnet cores can be reduced by equivalence transformation.
Claims25
A method for designing a filter system with
- at least two longitudinal branches having longitudinal inductors,
- at least one filter section, which has at least one transverse branch interposed between the longitudinal branches, and
- at least one adjacent filter section, which adjoins the transverse branch,
- wherein the configuration of the inductors is determined by means of transformation by the following process steps:
- first, the filter section has at least one free longitudinal inductor of the first longitudinal branch, a free longitudinal inductor of the second longitudinal branch coupled therewith and the transverse branch, which consists of a capacitor that is interposed between two transverse inductors coupled with each other, and first the adjacent filter section has at least one free longitudinal inductor of the first longitudinal branch and a free longitudinal inductor of the second longitudinal branch coupled therewith,
- subsequently, in each longitudinal branch between the transverse branch and the adjacent filter section a preliminary longitudinal inductor and a compensating inductor compensating the same and connected in series therewith are inserted, wherein the preliminary longitudinal inductors are coupled with each other and the compensation inductors are coupled with each other,
- subsequently, the compensation inductors are integrated into the free longitudinal inductors of the adjacent filter step,
- subsequently, the preliminary longitudinal inductors, the free longitudinal inductors of the filter section and the transverse inductors are replaced by four end inductors that are coupled with each other such that an equivalent circuit diagram of the four end inductors corresponds with the circuit diagram of the preliminary longitudinal inductors, the free longitudinal inductors of the filter section and the transverse inductors.
5 more elements
A method for designing a filter system with at least two longitudinal branches having longitudinal inductors,
- at least one filter section, which has at least one transverse branch interposed between the longitudinal branches, and
- at least one adjacent filter section, which adjoins the transverse branch,
- wherein the configuration of the inductors is determined by means of transformation by the following process steps:
- first, the filter section has a longitudinal inductor of the first longitudinal branch, a longitudinal inductor of the second longitudinal branch coupled therewith and the transverse branch, and the adjacent filter section first has at least one longitudinal inductor of the first longitudinal branch and a longitudinal inductor of the second longitudinal branch coupled therewith,
- subsequently, the longitudinal inductors of the filter section are replaced, respectively, by a first longitudinal inductor, which forms at least a portion of the free longitudinal inductor, and a second longitudinal inductor connected in series therewith, to which a resistor R is connected in parallel, wherein corresponding longitudinal inductors that belong to the same filter section are coupled with each other, and
- subsequently, a preliminary longitudinal inductor and a compensation inductor are inserted.
3 more elements
A method for designing a filter system with at least two longitudinal branches having longitudinal inductors,
- at least one filter section, which has at least one transverse branch interposed between the longitudinal branches, and
- at least one adjacent filter section, which adjoins the transverse branch,
- wherein the configuration of the inductors is determined by means of transformation by the following process steps:
- first, the filter section has a longitudinal inductor of the first longitudinal branch, a longitudinal inductor of the second longitudinal branch coupled therewith and the transverse branch, and the adjacent filter section first has at least one longitudinal inductor of the first longitudinal branch and a longitudinal inductor of the second longitudinal branch coupled therewith,
- subsequently, the longitudinal inductors of the filter section and the adjacent filter section are replaced, respectively, by a first longitudinal inductor and a second longitudinal inductor connected in series therewith, to which a resistor is connected in parallel, wherein corresponding longitudinal inductors that belong to the same filter section are coupled with each other,
- subsequently, the first longitudinal inductors and the second longitudinal inductors of the same filter section per longitudinal branch are replaced by a new first longitudinal inductor and a new second longitudinal inductor such that the new second longitudinal inductor is connected in series with the resistor, said series connection is connected in parallel to the new first longitudinal inductor, in the same filter section the new first longitudinal inductors of the first longitudinal branch and the second longitudinal branch are coupled with each other and the new second longitudinal inductors of the first longitudinal branch and the second longitudinal branch are coupled with each other,
- subsequently, in each longitudinal branch of the filter section a preliminary longitudinal inductor and a compensation inductor compensating the same and forming at least a portion of the free longitudinal inductor, are inserted between the parallel connection of the new first longitudinal inductor to the series connection and the adjacent filter section, and
- subsequently, the preliminary longitudinal inductors, the new first longitudinal inductors, which form an additional circuit diagram, are replaced by four longitudinal end inductors that are coupled with each other, such that an equivalent circuit diagram of the four longitudinal end inductors corresponds with the additional circuit diagram.
5 more elements
Dependencies are inferred from the claim text.