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Super-capacitor-based DC voltage sag suppression device and suppression method thereof

A super capacitor and voltage sag technology, applied in the field of power equipment, to achieve the effect of flexible charging mode, high reliability and stable voltage

Inactive Publication Date: 2011-09-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few domestic researches on the introduction and application of supercapacitors to suppress voltage sags in DC systems, especially the combination of bidirectional DC / DC conversion and supercapacitors to fully extract supercapacitor energy storage. Related products have not yet appeared

Method used

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  • Super-capacitor-based DC voltage sag suppression device and suppression method thereof
  • Super-capacitor-based DC voltage sag suppression device and suppression method thereof
  • Super-capacitor-based DC voltage sag suppression device and suppression method thereof

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Embodiment Construction

[0018] Such as figure 1 Shown is the main circuit schematic diagram of a DC voltage sag suppression device based on a supercapacitor, and the DC device voltage sag device based on a supercapacitor is composed of a supercapacitor array C S , Buck / Boost type bidirectional power conversion circuit and DC contactor KD are connected in series. in:

[0019] Super Capacitor Array C S Consists of 1-n single supercapacitors C S1 -C Sn Series and parallel configuration, super capacitor array C S It is an energy storage unit of a DC voltage sag suppression device based on a supercapacitor; the first resistor R 1 and the first capacitor C 1 connected in series to form the first IGBT device T 1 snubber circuit, and and the first diode D 1 together in parallel with the first IGBT device T 1 between the emitter and collector; the second resistor R 2 and a second capacitor C 2 connected in series to form the second IGBT device T 2 snubber circuit; and the second diode D 2 togethe...

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Abstract

The invention discloses a super-capacitor-based DC voltage sag suppression device and a super-capacitor-based DC voltage sag suppression method thereof, which belong to the technical field of power equipment. The device consists of a super capacitor array (CS), a Buck / Boost type bidirectional power conversion circuit and a contactor (KD). When a voltage sag suppressor is powered on and run, the super capacitor array (CS) is charged by the Buck / Boost type bidirectional power conversion circuit; and when a DC bus has voltage sag due to a failure of an AC system, the super capacitor array (CS) provides energy to realize boosting by the Buck-Boost type bidirectional power conversion circuit to support the voltage of the DC bus. The invention has the characteristics of simple structure, high reliability, low loss, long service life, no maintenance, no environmental pollutions and the like.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a supercapacitor-based DC mode voltage sag suppression device and a suppression method thereof. Background technique [0002] With the development of information technology, the requirements of modern society for the quality of power supply are increasing day by day, and high-quality power supply has become the basic condition for the smooth progress and stable development of production and life in modern society. In the typical power consumption systems of modern society, such as production lines based on microcomputer control, frequency conversion and speed regulation drives, and large-capacity communication equipment rooms, even a short power supply interruption or other power quality problems can cause incalculable economic losses. However, due to equipment factors, management factors and irresistible natural factors, other power quality problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
Inventor 韩民晓尹虎臣
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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