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Mechanical-electronic hybrid double-power-supply automatic change-over switch

A technology of automatic transfer switch and dual power supply conversion, which is applied in the direction of emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problems of incompatibility, etc., and achieve the effects of fast conversion speed, stable operation and strong short-circuit capability

Inactive Publication Date: 2012-12-26
任佶 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mechanical and electronic hybrid dual-power automatic transfer switch to solve the technical problems of the traditional dual-power automatic transfer switch in terms of cost, short-circuit resistance performance and power conversion speed.

Method used

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  • Mechanical-electronic hybrid double-power-supply automatic change-over switch
  • Mechanical-electronic hybrid double-power-supply automatic change-over switch

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Experimental program
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Embodiment Construction

[0012] The mechanical-electronic hybrid dual-power automatic transfer switch of the present invention includes a traditional mechanical dual-power transfer switch composed of two AC contactors of the same specification and a mechanical interlock mechanism, and 2 to 12 bidirectional thyristors (the number depends on Based on the number of electrodes and current level) and its protection and drive unit composed of electronic dual power switch. Under the coordination of the MCU logic unit, the AC contactor and the thyristor operate in sequence according to the design sequence to complete reliable high-speed conversion. The MCU logic unit also includes a power supply part, a voltage frequency sampling part, an electrical interlock part, an alarm and a display part. During stable operation, the operating current of the load is provided through one of the AC contactors, and this AC contactor bears the overcurrent and short circuit conditions. During the conversion period, the MCU l...

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Abstract

The invention discloses a mechanical-electronic hybrid double-power-supply automatic change-over switch, which comprises a conventional mechanical double-power-supply change-over switch consisting of two alternating-current contactors of the same specification and a mechanical interlocking mechanism, and an electronic double-power-supply change-over switch consisting of 2-12 bidirectional thyristors and a protecting and driving unit thereof, wherein control signals for controlling the alternating-current contactors of the mechanical double-power-supply change-over switch and the bidirectional thyristors to act in sequence are transmitted by using an MCU (Microprogrammed Control Unit) logic unit; and the MCU logic unit comprises a power supply part, a voltage frequency sampling part, an electric interlocking part and an alarming and displaying part. Due to the adoption of the mechanical-electronic hybrid double-power-supply automatic change-over switch, the technical problem of incompatibility on the aspects of manufacturing cost, short-circuit current resistance, power supply conversion speed and the like existing in the conventional double-power-supply automatic change-over switch is solved.

Description

technical field [0001] The invention relates to a mechanical / electronic hybrid switch. Background technique [0002] Known dual power supply automatic transfer switch has pure mechanical type and pure electronic type at present. The mechanical automatic transfer switch has the advantages of low cost, high resistance to short-circuit current, and no need for special cooling measures; its disadvantage is that the switching speed is slow, and the fastest power-off time is greater than 50 milliseconds when the power is automatically switched, and the return is automatically switched. The fastest power-off time of 25 milliseconds. The pure electronic automatic transfer switch has the advantages of no contact and no arc, especially the advantage of fast switching speed, and its power-off time can be less than 5 milliseconds; its disadvantages are high cost and low short-circuit current resistance. Contents of the invention [0003] The purpose of the present invention is to pr...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 任佶
Owner 任佶