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Static switch device for realizing uninterrupted power supply system switching control

A static switch and power system technology, applied in circuit devices, emergency power arrangements, electrical components, etc., can solve the problems of large discreteness of relay on and off time, arcing, and complex control circuits, etc., to achieve slow start And power supply undervoltage protection, improve the effect of reliability

Inactive Publication Date: 2007-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the control circuit of this method is complicated, and the discreteness of the turn-on and turn-off time of the relay is very large, and when the output load of the uninterruptible power supply system is heavy, there is an arcing phenomenon between the switching contacts of the relay, which is easy to make the inverter power supply and the mains The power supply forms a circulating current and burns out the uninterruptible power supply system

Method used

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  • Static switch device for realizing uninterrupted power supply system switching control
  • Static switch device for realizing uninterrupted power supply system switching control
  • Static switch device for realizing uninterrupted power supply system switching control

Examples

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0041] As shown in Figure 3: select the conduction circuit for the static switch, and the strobe signal is sent to the interlock control circuit through the isolation of the photocoupler D1 and D2. The VT6-b signal in Figure 3 (capacitor C4 is charged instantaneously when D2 is turned on and VT6-b is at a high level instantaneously) is the instantaneous clear signal of the D6-8 pin of the interlock circuit when the battery is started, and is sent to the bypass voltage detection The control circuit ensures that the static switch has the correct output in battery mode. Through the control of the strobe signals F1 and F2 by the microprocessor, the static switch control signals of P1 and P2 in four different states are sent to the interlock control circuit.

[0042]As shown in Figure 4: it is a static switch interlock control circuit. The core circ...

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Abstract

This invention is relative to a static switch device implementing the switching control in uninterruptible power system. Adopting two way silicon controlled as static switch overcomes the circulation caused by instant power break and arc as the relay switching, implements 0 ns outage duration as switching. Adopting bypass static switch and inversion switch interlocking circuit insures that there is no circulation between the bypass city power source and inverter feed. The sampling bypass silicon controlled outputs voltage and takes part the control for interlocking to implement 0 current and voltage switching as city power switching to inverter power. The silicon controlled can make self-implementation for soft start while the uninterruptible power system powers on and APS (double backup) supplies power. After implementation of soft start the silicon controlled just makes relevant output according to control signal from the static switch. When some unexpected reasons cause the power source of the silicon controlled to be under-voltage, the silicon controlled can automatically make turn off protection for output to promote the reliability of static switch system.

Description

technical field [0001] The invention relates to a static switch device for realizing switching control of an uninterruptible power supply system, which belongs to the switching between bypass mains and inverter alternating current of an AC uninterruptible power supply and its control technology, and specifically relates to a static switching device for uninterruptible power supply systems. The intermittent power supply system is a static switching device for switching from AC bypass power supply to inverter power supply and from inverter power supply to AC bypass power supply. Background technique [0002] Driven by the objective demand of the rapid development of computer network and telecommunication network, today's uninterruptible power supply system has developed into an intelligent uninterruptible power supply system based on the introduction of a large number of microprocessor monitoring technologies. [0003] When the user presses the switch on the panel of the unint...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/04H02J9/06
Inventor 黎学伟
Owner ZTE CORP
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