Single-phase uninterruptible power supply output voltage stabilization control method and system

A technology of power output and voltage stabilization control, which is applied in the direction of control/regulation system, transportation and packaging, emergency power supply arrangement, etc., and can solve problems such as failure to meet voltage regulation requirements and unable to ensure output voltage stability

Pending Publication Date: 2022-06-24
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Description
  • Claims
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Problems solved by technology

[0004] At present, most of the inverter regulator modules inside the uninterruptible power supply adopt switch control mode, which cannot ensure the stability of the output voltage.
Some key equipment loads are sensitive to grid voltage fluctuations, and usually need to limit the fluctuation range within ±3%. At this time, the open-loop control method cannot achieve high-precision voltage regulation requirements

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  • Single-phase uninterruptible power supply output voltage stabilization control method and system
  • Single-phase uninterruptible power supply output voltage stabilization control method and system
  • Single-phase uninterruptible power supply output voltage stabilization control method and system

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Embodiment Construction

[0050] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] The term "and / or" in this embodiment of the present application is only an association relationship to describe associated objects, indicating that there may be three kinds of relationships, for example, A and / or B, which may indicate that A exists alone, and A and B exist at the same time. , there are three cases of B alone....

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Abstract

The embodiment of the invention provides a single-phase uninterruptible power supply output voltage stabilization control method and system. An uninterruptible power supply circuit mainly comprises a controllable rectification module, a storage battery charging and discharging module and an inversion voltage stabilization module. A storage battery charging and discharging module needs to be switched between a charging mode and a discharging mode in time, uninterrupted power supply of a load is achieved, and high control requirements are provided for a charging and discharging control system in the uninterruptible power supply. And a voltage closed-loop method is adopted, and an optimal control pulse is solved according to a circuit mathematical equation of the inversion voltage stabilization module, so that the fluctuation range of the output voltage is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of uninterruptible power supply control, and in particular, to a method and system for controlling the output voltage regulation of a single-phase uninterruptible power supply. Background technique [0002] In order to improve the reliability of load power supply, some important loads are connected to the power grid through uninterruptible power supplies. On the one hand, it can prevent the power grid from losing effective power supply; on the other hand, the power supply quality of the load side can be further improved through the power conversion module related to the uninterruptible power supply. , to achieve stable voltage amplitude and reduce the impact of power grid fluctuations on load performance. The uninterruptible power supply mainly consists of three parts: controllable rectifier module, battery charge and discharge module, and inverter voltage regulator module. Among t...

Claims

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Application Information

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IPC IPC(8): H02J7/06H02J7/00H02J9/06H02M7/219H02M7/5387H02M3/158H02M1/088
CPCH02J7/06H02J7/0063H02J9/062H02J9/068H02M7/219H02M7/53871H02M3/158H02M1/088H02J2207/20
Inventor 邹剑桥黄敏
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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