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Power supply unit for providing switchable power output

A technology of power supply output and power supply unit, which is applied in the direction of electrical components, protection against overcurrent, and measurement of electricity, which can solve the problems of controller board supply damage, voltage damage, etc., and achieve the effect of saving current measurement

Active Publication Date: 2018-01-12
PHOENIX CONTACT GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Furthermore, in the case of weak grid components, the voltage can be significantly disrupted in the event of a short circuit
This may have the effect, for example, that the controller's board supply (used to identify short circuits and / or control switches) is also broken, thus making the controller unable to respond in the event of a short circuit

Method used

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  • Power supply unit for providing switchable power output
  • Power supply unit for providing switchable power output
  • Power supply unit for providing switchable power output

Examples

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Embodiment Construction

[0026] Hereinafter, the present invention is explained in further detail with reference to the flowchart drawings. It should be noted that the embodiments describe different aspects, each of which can be used alone or in combination. That is, any aspect can be used with different embodiments of the invention as long as it is not explicitly depicted as merely an alternative.

[0027] Furthermore, for the sake of brevity, reference will generally be made hereinafter to only one entity. However, the present invention may also have a plurality of related entities as long as it is not explicitly stated. Accordingly, use of the words "a", "an", "ofa", and "of an" should be understood to mean that in a single embodiment at least an entity.

[0028] Due to the large size of the flowchart showing different aspects of the embodiments, it has been broken up over multiple pages, where the interfaces between the pages are clearly identified by A, B, C, D, and E.

[0029] Where a single...

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PUM

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Abstract

The invention relates to a power supply unit for providing switchable power output, comprising at least one power input UIN and at least one voltage measuring device. The voltage measuring device monitors the voltage of the power input UIN. When the input voltage is reduced to an inclining threshold value Uthres lower than definition or exceeds the change rate threshold value, one or a plurality of power output will be cut off, and the input voltage (UIN, t1) will be measured at a first time point t1, and the input voltage (UIN, t2) will be measured again at a second time point t2 after the first preset time (td1). If the input voltage at the second time point is larger than that at the first time point, it is assumed that at least one power output has short circuit.

Description

technical field [0001] The invention relates to a power supply unit for providing at least one switchable power supply output. Background technique [0002] A variety of power supply units are known in the prior art, and one difficulty that arises in this environment is how to distinguish real short circuits from virtual short circuits. Virtual shorts occur due to capacitive loads, which behave like short circuits, especially when switched on. That is, only when the capacitive load is properly charged can a significant amount of current flow. [0003] Therefore, repeated attempts have been made in the past to identify these virtual shorts. [0004] An electronic protective device is known, for example, from DE 10 2012 103 551 A1, which switches off a switch controlled by a controller as a function of an (output-side) overload current and switches it back in as a function of a voltage change at the output. A device similar to this electronic protective device is known from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08G01R31/02
CPCH02H1/043H02H3/243H02H3/247G01R31/52H02H1/0007H02H3/06H02H3/0935H02H11/008
Inventor 亚历山大·弗曼科格哈德·沃尔克
Owner PHOENIX CONTACT GMBH & CO KG