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Uninterruptible power supply with adjustable output voltage

A technology of output voltage and power supply, applied in the field of uninterruptible power supply, which can solve the problems of low modulation ratio of SPWM control and the quality degradation of inverter output power supply, and achieve the effect of ensuring the quality of output power supply and voltage stability

Pending Publication Date: 2022-03-11
上海优比施电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an uninterruptible power supply with adjustable output voltage. The uninterruptible power supply device can be adjusted by the output voltage level and frequency so that it can match the voltage standards of major countries in the world, and at the same time solve the problem of excessive modulation ratio during SPWM control. Low, the problem that the quality of the output power of the inverter is degraded

Method used

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  • Uninterruptible power supply with adjustable output voltage
  • Uninterruptible power supply with adjustable output voltage
  • Uninterruptible power supply with adjustable output voltage

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] The present invention provides such Figure 1-2 The uninterruptible power supply with adjustable output voltage includes the main power line, bypass power line and maintenance bypass power line, and the main power line, bypass power line and maintenance bypass power line are connected in parallel, A main switch is connected in series on the main power line, a bypass switch is connected in series on the bypass power line, a maintenance bypass switch is connected in series on the maintenance bypass power line, and one end of the main power line is connected to the power input terminal , the power input terminal is electrically connected with the external input power supply, the maintenance bypass power line is used when the UPS enters the by...

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Abstract

The invention discloses an uninterruptible power supply with adjustable output voltage, which comprises a main power line, a bypass power line and a maintenance bypass power line, the main power line, the bypass power line and the maintenance bypass power line are connected in parallel, the main power line is connected with a main switch in series, the bypass power line is connected with a bypass switch in series, and the maintenance bypass power line is connected with the bypass switch in series. A maintenance bypass switch is connected to the maintenance bypass power line in series, one end of the main path power line is connected with a power input end, the power input end is electrically connected with an external input power supply, and a rectifier, a direct current bus, an inverter, a filter and an isolation transformer are arranged on the main path power line. Aiming at the condition that standard voltages of equipment in different countries in an industrial place are different, the related uninterruptible power supply can carry out conversion of output voltage grades and output voltage frequencies of different national standards according to user requirements, and meanwhile, the modulation ratio of SPWM control is prevented from being reduced, and the quality of the output power supply is prevented from being reduced.

Description

technical field [0001] The invention relates to the field of uninterruptible power supplies, in particular to an uninterruptible power supply with adjustable output voltage. Background technique [0002] In industrial production, it is necessary to equip important equipment with uninterruptible power supply devices in order to ensure that power failures do not cause harm or cause major economic losses. [0003] With the development of economic globalization, the import and export of industrial equipment from different countries is increasing day by day. Industrial equipment from different countries is often used, and the voltage standards of each country are different. At present, there are generally two types of indoor voltage (single-phase) used in countries around the world, namely AC 100V-130V and AC 220-240V. 100V and 110-130V are classified as low voltage, such as the voltage on board in the United States, Japan, etc., and the emphasis is on safety; 220-240V is calle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/34
CPCH02J9/062H02J7/34
Inventor 杨荐
Owner 上海优比施电子科技有限公司
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