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AC-DC conversion device and uninterruptible power supply device

An AC-DC conversion and AC technology, which is applied in the output power conversion device, circuit device, and AC power input to DC power output, etc. It can solve the problem of poor parameter indicators and achieve the effect of improving the input characteristics.

Active Publication Date: 2016-08-10
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of taking power from the mains to charge the battery makes the UPS input parameter indicators, such as input current distortion degree (THDI), input power factor and other parameter indicators poor.

Method used

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  • AC-DC conversion device and uninterruptible power supply device
  • AC-DC conversion device and uninterruptible power supply device
  • AC-DC conversion device and uninterruptible power supply device

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Embodiment Construction

[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0059] figure 1 It is a schematic structural diagram of an AC / DC conversion device provided by an embodiment of the present invention. The AC / DC conversion device provided in this embodiment includes: a rectification circuit 11 , a PFC circuit 12 and a battery charging circuit 13 .

[0060] One end of the rectification circuit 11 is used to connect the alternating current, and the other end is connected to the PFC circuit 12 for rectifyin...

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Abstract

The invention provides an alternating current and direct current conversion device and an uninterruptible power supply device. The alternating current and direct current conversion device comprises a rectifying circuit, a PFC circuit and a battery charging circuit. One end of the rectifying circuit is used for being connected with alternating current, and the rectifying circuit is used for rectifying the alternating current. One end of the PFC circuit is connected with the other end of the rectifying circuit, the other end of the PFC circuit is connected with a bus capacitor, and the PFC circuit is used for conducting power factor correction on current rectified by the rectifying circuit. The battery charging circuit and the PFC circuit at least shares an inductor, and the battery charging circuit fetches electricity from the other end of the PFC circuit, stores energy for the inductor, and is used for utilizing the inductor which stores energy to charge a battery. Due to the fact that the battery charging circuit which at least shares the inductor with the PFC circuit fetches electricity from the other end of the PFC circuit, stores energy for the inductor, and is used for utilizing the inductor which stores energy to charge the battery, the goal of charging the battery through the UPS bus capacitor, and the input characteristic of the battery charging is improved.

Description

technical field [0001] The invention relates to power supply technology, in particular to an AC-DC conversion device and an uninterruptible power supply device. Background technique [0002] The online uninterruptible power supply (Uninterruptible Power System, UPS) circuit generally includes three parts: the AC-to-DC conversion circuit (AC / DC circuit), the DC-to-AC inverter circuit (DC / AC circuit) and the DC-to-DC circuit. circuit (DC / DC circuit). Wherein, the DC / DC circuit is connected with the battery for converting the voltage of the battery into a DC voltage required by the DC / AC circuit. [0003] UPS generally requires the output neutral line (N line) to pass through the input N line. Moreover, in order to reduce the cost and reduce the size, the DC / AC converter circuit of the high-frequency non-isolated on-line UPS mainly adopts the half-bridge inverter. Mainly, and the DC / AC circuit using a half-bridge inverter requires that the busbar of the UPS must be a double ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02H02J7/00H02M7/155
CPCY02P80/10
Inventor 刘培国程洋代书鹃
Owner HUAWEI DIGITAL POWER TECH CO LTD
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