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Uninterruptible power supplying method and uninterruptible power supply

A technology of power supply and discharge circuit, applied in the field of power supply, can solve the problems of energy consumption and the efficiency of the whole machine cannot be effectively improved, and achieve the effect of reducing work loss and improving work efficiency

Active Publication Date: 2013-10-02
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In ECO mode, although the main part of the UPS is on standby, it still consumes a certain amount of energy, which also prevents the overall efficiency of the UPS from being effectively improved in ECO mode.

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  • Uninterruptible power supplying method and uninterruptible power supply
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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] UPS can provide power to loads in online mode and ECO mode according to the quality of mains power. For example, the online mode is used when the mains power quality is not good, and the ECO mode is used when the mains power quality is good. ECO mode is also called energy-saving operation mode, bypass mode or power-saving mode. The UPS can supply power to the load with two paths: the online main circuit (also known as the double conversion circ...

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Abstract

The invention provides an uninterruptible power supplying method and an uninterruptible power supply. The method comprises the steps as follows: switching the uninterruptible power supply from a main loop working mode to a bypass working mode so as to enable commercial power to be supplied to a load through a bypass; determining the working mode of the uninterruptible power supply; adjusting the working frequency of at least one switch tube in the main loop of the uninterruptible power supply from a first frequency to a second frequency, wherein the second frequency is smaller than the first frequency so as to lower power loss of the uninterruptible power supply under the bypass working mode. According to the embodiment of the invention, when the uninterruptible power supply is switched to the bypass for running, the working frequency of the switch tube of the main loop of the uninterruptible power supply is lowered. Therefore, the work loss of the uninterruptible power supply can be lowered, and the work efficiency of the uninterruptible power supply can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an uninterruptible power supply method and an uninterruptible power supply. Background technique [0002] Uninterrupted Power Supply (UPS) not only satisfies the function of providing uninterrupted power supply to users, but also purifies the power supply and provides high power quality. UPS generally adopts the double-conversion working mode. When it is working, it needs to consume electric energy. The greater the output power, the more electric energy it consumes. In order to save energy, when the quality of the power grid is relatively good, the concept of economical operation (ECO) mode (ECO-mode) is proposed, that is, the power grid directly passes through the UPS bypass line (also called static bypass) to the user. The load provides mains power, and the main parts of the UPS are in standby (standby) state, its output power is zero, and the power consumption is relat...

Claims

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Application Information

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IPC IPC(8): H02J9/06
CPCH02J7/34H02J9/005H02J9/062Y02B70/10Y04S20/20Y02B70/30H02M1/0054H02M1/007H02M5/4585
Inventor 程洋刘培国蔡米塔
Owner HUAWEI DIGITAL POWER TECH CO LTD
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