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Power converter

A technology of power converters and voltage converters, which is applied in the electrical field and can solve problems affecting the power density of power supplies, large volume, and radiator occupation

Inactive Publication Date: 2017-02-15
ASTEC INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrolytic capacitors used as energy storage capacitors are usually large in size, and the corresponding radiators also occupy a large position, which becomes the main factor affecting the further improvement of the power density of the power supply

Method used

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0019] Those skilled in the art can understand that terms such as "first" and "second" in the present invention are only used to distinguish different units, modules or steps, etc., neither represent any specific technical meaning, nor represent the inevitable relationship between them. The logical order does not reflect the degree of importance of the different units, modules or steps defined by it.

[0020] It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Other terms used to describe the relationship between elements should be ...

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Abstract

The invention provides a power converter comprising a first input rectifier and a second input rectifier; a first voltage converter and a second voltage converter which are coupled in an interleaved manner between an input end and a DC output end of the power converter; a first energy storage element and a second energy storage element; an output control unit, coupled between an output end of the first voltage converter and an output end of the second voltage converter, and used for disconnecting the output end of the first voltage converter and the output end of the second voltage converter during an abnormality in the input voltage; and a bypass unit, coupled between the second energy storage element and an input end of the first voltage converter, and used for causing the energy stored in the second energy storage element to be transferred to the first energy storage element via the bypass unit during an abnormality in the input voltage.

Description

technical field [0001] The present invention relates to the field of electric technology, more specifically to a power converter, especially to a power converter with desired hold-up time and improved power density. Background technique [0002] At present, some electronic equipment such as computers have higher and higher requirements for the stability of power supply, because when the input voltage is abnormal (such as power failure), it is necessary to be able to output within a certain period of time after the input voltage is abnormal. The voltage is maintained within a certain range for a period of time known as the hold-up time, which is used to sequentially terminate the operation of the data processing device or switch to uninterruptible power supply (UPS) operation after a line failure. [0003] Now take the AC-DC power converter as an example for illustration. Generally, an AC-DC power converter includes: a full-wave rectifier, a voltage converter, and a DC-DC co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/04
Inventor 石磊
Owner ASTEC INT LTD