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Intelligent digital dual-power switching system

A dual power switching, intelligent technology, applied in emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problems of inability to perform frequency offset and harmonic content, inconvenient remote monitoring and operation, and unreliable power supply units. , to facilitate remote monitoring and operation, improve the level of intelligence, and achieve the effect of rapid detection

Inactive Publication Date: 2015-10-14
CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the power supply unit is unreliable, frequency offset and harmonic content cannot be detected, and it is not convenient to realize remote monitoring and operation, the present invention proposes an intelligent digital dual power supply switching system

Method used

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Embodiment 1

[0036] The control power supply unit of the present invention is composed of a double-input and single-output flyback switching power supply, that is, the normal and standby two-way AC power supply respectively constitute an independent flyback switching power supply, and the parallel output of the two-way power supply supplies power for the control unit. The two flyback switching power supplies have the same structure, including: input protection circuit, input rectification circuit, input filter circuit, flyback switching power supply topology circuit, and output rectification circuit. The AC input power supply is connected to the input protection circuit, the other end of the input protection circuit is connected to the input rectification circuit, the other end of the input rectification circuit is connected to the input filter circuit, and the other end of the input filter circuit connected to the flyback dual-input single-output flyback switching power supply topology cir...

Embodiment 2

[0039] figure 1 A system structure diagram in this embodiment is shown. In a preferred embodiment of the present invention, the system includes: a power supply module, a sampling unit, a control unit, and a host computer. The control unit is respectively connected with the double-input single-output flyback switching power supply, the sampling unit, and the host computer.

[0040] figure 2 and image 3 shows the structure diagram of the control power supply in this embodiment. The control power supply unit of the system is composed of double-input and single-output flyback switching power supply, that is, the normal and standby two-way AC power supply constitutes an independent flyback switching power supply, and the parallel output of the two power supplies supplies power to the control unit. The structure of the two switching power supplies is the same, including: the common A phase and the standby A_ phase respectively constitute two independent flyback switching power ...

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Abstract

The present invention provides an intelligent digital dual-power switching system which comprises a control power supply unit, a sampling unit, a control unit, and a host machine. The control power supply unit of the system is formed by a two-in-and-one-out flyback switching power supply, the structures of two paths of switching power supply topologies are the same, and two paths of power supplies are parallelly outputted to supply power to the control unit. Four voltage transformers are employed by the sampling unit, and a collection voltage signal is connected to the control unit. The control unit comprises a microcontroller module, a motor control module, an Ethernet communication module, and an indicating module. The host machine is provided with power quality analysis software and transmits an analysis result to the microcontroller module through the Ethernet communication module, and the operation of a motor is controlled through the microcontroller module. According to the intelligent digital dual-power switching system, the power grid drop can be rapidly and accurately detected, the reliability of the power supply switching is improved, and the safe and stable operation of a power distribution network is ensured.

Description

technical field [0001] The invention relates to the technical field of electric power equipment, in particular to a dual power supply switching device and a control method thereof, which are mainly used in firefighting, hospitals, airports and other places. Background technique [0002] In order to ensure the uninterrupted power supply of the load, the power supply of the load is usually divided into a normal power supply and a backup power supply, and at the same time, it is necessary to ensure that the conversion time between the normal power supply and the backup power supply is short. The intelligent dual power conversion device must be able to accurately and quickly detect power failure and send out a conversion control signal, and intelligently switch between the normal and backup power sources through the AC asynchronous motor to avoid load power supply due to misjudgment or long detection time. interruption situation. [0003] The existing digital dual power supply...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 应展烽杨忠浩马啸赵骞周俊巍
Owner CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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