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Circuit arrangement and output voltage measurement with a transformer with center tap

A technology of circuit layout and center tap, applied in the direction of transformer/inductor coil/winding/connection, irreversible AC power input conversion to DC power output, AC/DC potential difference measurement device, etc., can solve the failure of converter 1 , destroying diodes, loose connecting wires 5, etc.

Active Publication Date: 2022-03-01
FRONIUS INTERNATIONAL GMBH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, it can happen that the connecting line 5 becomes loose over time, or that the connection of the connecting line 5 to the circuit carrier 3 or to the positive output line 2 is completely forgotten during assembly.
Both situations usually result in failure of the regulated converter 1 which requires an output voltage U A measured value of
In particular in the absence of connecting lines 5 overvoltages can occur on the diodes D1 , D2 which can also destroy these diodes

Method used

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  • Circuit arrangement and output voltage measurement with a transformer with center tap
  • Circuit arrangement and output voltage measurement with a transformer with center tap
  • Circuit arrangement and output voltage measurement with a transformer with center tap

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Embodiment Construction

[0023] Figure 4 A circuit arrangement 8 with a transformer T with a secondary-side center tap is shown. There are at least three connections on the secondary side of the transformer T with center taps. One connection for the intermediate point M and two connections at the ends of the secondary-side winding, these two connections being referred to as external connections A1 , A2 .

[0024] However, it is generally pointed out that a transformer with a center tap is also understood in the sense of the invention to mean the use of two or more transformer windings with a common core, wherein the secondary windings and the primary windings are respectively connected in series (e.g. exist Figure 5 shown in ). This also includes separate transformers with parallel-connected primary windings and series-connected secondary windings. The electrical connection between two series-connected secondary windings then corresponds to the intermediate point M, to which the first output line...

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Abstract

In order to enable voltage measurement of the output voltage on the secondary side in a simple and reliable manner in a circuit arrangement (8) with a transformer with a center tap, it is provided that on the secondary side of the transformer (T) At least two series connected resistors (R3, R4) are connected between the two external connection terminals (A1, A2) so as to form a measuring point (P) between said two resistors (R3, R4) and set There is a voltage measuring unit (V) which measures the voltage between the measuring point (P) and the second output pole (13) and the output voltage (U A ) Corresponding voltage (U P ).

Description

technical field [0001] The invention relates to a circuit arrangement with at least one transformer with a center tap, wherein the middle point of the secondary side of the transformer is connected to a first output pole via a first output line, and the secondary side of the transformer The two external connections are connected via an electrical switching element in each case and are connected to the second output pole by means of a second output line, and the circuit arrangement has a measuring circuit arrangement present between the first and the second output pole. A voltage measuring device for an output voltage of , wherein at least two resistors connected in series are connected between the two external connections on the secondary side of the transformer so as to form a measuring point between the two resistors. Background technique [0002] In converters such as DC converters, switched converters, resonant switched converters, etc., transformers with a center tap on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335H02M7/155
CPCG05F1/565H02M3/338H02M7/219G01R17/20H05K1/02H02M3/335H02M7/155H02M7/1555B23K9/1043B23K9/32G01R15/005G01R19/0084H01F27/29H02M7/06H05K1/181H05K2201/10166H05K2201/10174
Inventor C·马格尔F·P·穆西尔R·埃伯尔F·施泰因莫雷尔
Owner FRONIUS INTERNATIONAL GMBH
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