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Bypass contactor control panel of power unit

A technology of bypass contactors and power units, applied in the field of high-voltage inverters, can solve problems such as cumbersome troubleshooting of fault points

Active Publication Date: 2015-12-02
INVT POWER ELECTRONICS SUZHOU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a bypass contactor control board of a power unit to solve the cumbersome problem of troubleshooting the fault point of the bypass control circuit in the prior art

Method used

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  • Bypass contactor control panel of power unit
  • Bypass contactor control panel of power unit
  • Bypass contactor control panel of power unit

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] The invention provides a bypass contactor control board of a power unit to solve the problem of cumbersome troubleshooting of fault points of a bypass control circuit in the prior art.

[0049] Specifically, such as figure 1As shown, the bypass contactor control board of the power unit is applied to a high-voltage frequency converter, and is connected between the control system of the power unit and N bypass contactors; the bypass contactor control boar...

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Abstract

The invention provides a bypass contactor control panel of a power unit. By virtue of compilation of a compilation unit, a corresponding relay control unit controls a relay connected to a fault power unit bypass contactor, so that a bypass contactor of a power unit having a fault executes a bypass; a signal sending and feedback unit is used for feeding back a sending situation of a bypass control signal, a contactor actuation feedback unit is used for feeding back an actuation situation of the bypass contactor, if the bypass is in failure, corresponding fault points can be rapidly and effectively checked, and the problem that the fault point troubleshooting of the bypass control circuit in the prior art is complicated can be solved.

Description

technical field [0001] The invention relates to the technical field of high-voltage frequency converters, in particular to a bypass contactor control board of a power unit. Background technique [0002] At present, in the application of high-voltage frequency converters, in order to improve the operation reliability of the whole system and not shut down when a single power unit fails, the power unit bypass technology is generally used. [0003] The power unit bypass technology is specifically: when a certain power unit fails, the control system judges that the state signal of the power unit is a fault signal, and then the control system outputs the bypass control signal of the power unit, and through the bypass control The circuit controls the bypass contactor of the power unit to perform bypass, so that the high-voltage frequency converter continues to run. [0004] However, in the solution of the prior art, the control system sends the bypass control signal, but the bypas...

Claims

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Application Information

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IPC IPC(8): H02M1/32
Inventor 田其金唐益宏张振华张广志
Owner INVT POWER ELECTRONICS SUZHOU CO LTD
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