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dc/dc converter

A converter and inverse conversion technology, applied to instruments, conversion equipment without intermediate conversion to AC, DC power input conversion to DC power output, etc., can solve problems such as impossibility, and achieve the effect of a simple adjustment method

Active Publication Date: 2018-06-15
FRONIUS INTERNATIONAL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the case of high input voltages (≥ 1000V) this is problematic, since for example in the case of electrolytic capacitors the dielectric strength is limited by the process to 500V
Therefore, such a DC / DC converter cannot be implemented at all with electrolyte capacitors for high input voltages.

Method used

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Examples

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Embodiment Construction

[0023] figure 1 The inventive DC / DC converter 1 is shown without galvanic separation for converting a first DC voltage U at the input of the DC / DC converter 1 IN Converted to the second DC voltage U on the output of the DC / DC converter 1 OUT , the second direct current is present on the electrical load B. In operation, the electrical load B draws (ziehen) the output current I OUT (for example to charge a battery), the output current causes an input current I in the DC / DC converter 1 IN , the input current I IN It is taken, for example, from a DC intermediate circuit not shown. Filter coils L can also be provided in a known manner in the input branch and / or in the output branch IN , L OUT , in order to reduce current fluctuations. The DC / DC converter 1 of the invention is bidirectional, making it possible to also reverse the input and output and thus the direction of the current or power flow P, as figure 1 shown. In the case of a reversed power flow direction, for e...

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Abstract

In order to have high dynamic characteristics and to provide for a high voltage ratio, a capacitor series circuit (2) consisting of at least three capacitors (C1, C2, C3) is provided in the DC / DC converter (1), wherein the capacitor The first capacitor (C1) and the middle third capacitor (C3) of the series circuit (2) are part of the first inverse converter (7), and the second capacitor (C2) of the capacitor series circuit (2) and the middle The third capacitor (C3) is part of the second inverse converter (8) and a first DC voltage (UIN) is present across the capacitor series circuit (2) and a second DC voltage (UOUT) is present across the first and second on the common third capacitor (C3) of the inverse converters (7, 8).

Description

technical field [0001] The invention relates to a DC / DC converter for converting a first direct voltage into a second direct voltage and a method for regulating such a DC / DC converter, wherein in the DC / DC converter A capacitor series circuit consisting of at least three capacitors is provided, wherein the first capacitor and the middle third capacitor of the capacitor series circuit are part of the first inverting converter, and the second capacitor and the middle third capacitor of the capacitor series circuit are The third capacitor in the middle is part of the second inverse converter. Background technique [0002] In many fields of application it is necessary to convert high DC voltages, for example 330 V to 1000 V, into significantly lower DC voltages, for example 40 V to 60 V, ie voltages which are reduced by a factor in the range of 10. In the case of bidirectional direct voltage converters (DC / DC converters), the reverse is correspondingly true. This occurs, for e...

Claims

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Application Information

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IPC IPC(8): H02M3/06H02M3/10H02M1/00
CPCG05F1/46H02M3/07H02M3/06H02M3/10H02M1/0058H02M3/158H02M3/1582H02M3/1586Y02B70/10
Inventor A·施马尔瑙尔T·克罗斯旺-里德勒
Owner FRONIUS INTERNATIONAL GMBH
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