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Multi-phase converter

a multi-phase converter and converter technology, applied in the direction of electric variable regulation, process and machine control, instruments, etc., to achieve the effect of increasing the interconnection level of phases, simple manner, and increasing failure safety of multi-phase converters

Inactive Publication Date: 2015-01-15
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a solution for improving the efficiency of a multiphase converter by reducing power loss and interference. This is achieved by introducing a magnetic leakage flux in a targeted manner to slightly reduce the coupling of the phases. Additionally, the text mentions that the coupling means which have a lower inductance and are subjected to a greater load can be reduced in terms of losses, resulting in a lower development of heat. This solution is space-saving and does not require any additional installation space.

Problems solved by technology

This solution manages without any additional installation space and is therefore space-saving.

Method used

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Embodiment Construction

[0045]The invention is illustrated schematically in the drawings on the basis of embodiments and will be described in detail below with reference to the drawings.

[0046]The figures show the compact and flat design of the four-phase system of coupled inductances with adjustable leakage flux.

[0047]In this system, in each case two phases are coupled to one another per coupling element or core. In the four cores, each phase is therefore magnetically coupled to its predecessor and successor (in time). By virtue of the embodiment with in each case two turns per phase, the magnetic saturation of the core cross section is markedly reduced. This in turn results in markedly lower core losses and therefore in less complexity in terms of cooling.

[0048]Owing to the fact that no air gap is required in the useful flux path in coupled systems, high inductance values can also be realized with the two turns. Owing to the increased inductance, any core can be provided with an air gap as protection agai...

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Abstract

Disclosed is a multi-phase converter comprising a plurality of electric phases, each of which can be triggered by a switching means. At least one coupling means (100 to 106) is provided for coupling a phase to another phase, each phase having two windings.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a multiphase converter.[0002]A power converter, which can also be referred to as a DC-to-DC converter, is designed to convert a DC voltage at the input into a DC voltage with a different voltage level. Such a power converter can also be in the form of a multiphase converter with coupled inductances. Coupled multiphase converters comprise a plurality of phases, wherein each phase is routed through a conductor through which current flows, which conductors are coupled to one another by magnetic coupling means. Current ripple generated by each phase as a result of the magnetic coupling can, however, impair the operation of the multiphase converter, for which reason sections of the individual conductors need to be arranged in a suitable manner with respect to one another in order to avoid, for example, disadvantages associated with electromagnetic compatibility.[0003]Document WO 2012 / 028558 A1 describes a multiphase converter in w...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01F38/14H02M3/22H02M1/00
CPCH01F38/14H02M3/22H02M2001/0048G05F3/08H01F3/14H01F2038/026H02M3/1584H02M3/1586Y02B70/10H01F27/38H01F30/12H01F30/14H02M1/0048
Inventor SCHINZEL, MIRKODRAESE, NILSSCHOETTLE, RICHARD
Owner ROBERT BOSCH GMBH