A connection structure of copper bar of wind power inverter contactor

Abstract

The invention relates to a contactor copper bar connecting structure for a wind power generation frequency converter. The contactor copper bar connecting structure comprises the contactor and a vertical plate, wherein the contactor is fixedly mounted on the vertical plate; horizontally-arranged three phases of input terminals are arranged on one side of the contactor while horizontally-arranged three phases of output terminals are arranged on the other side of the contactor; the contactor copper bar connecting structure is characterized in that the three phases of output terminals are jointly mounted on a vertical insulating frame board; and the insulating frame board is fixedly connected with the three phases of output terminals through bolts. The contactor copper bar connecting structure is scientific and reasonable in design; the reasonable and reliable connection between the three phases of output terminals of the contactor and the flexible copper bars can be realized; the spacing of the three phases of output terminals can be kept; and a high safety property is achieved.

Description

technical field [0001] The invention relates to a copper bar connection structure, in particular to a copper bar connection structure of a wind power frequency converter contactor. Background technique [0002] The frequency converter is an essential and important component in the wind turbine. The frequency converter excites the rotor of the doubly-fed asynchronous wind power generator, so that the amplitude, frequency and phase of the output voltage of the stator side of the doubly-fed generator are the same as those of the grid, and independent decoupling control of active power and reactive power can be performed as required . The inverter controls the doubly-fed asynchronous wind generator to achieve soft grid connection, reducing the adverse impact of the grid connection impact current on the motor and the grid. [0003] The existing inverter is composed of main circuit system, power distribution system and control system. Including stator grid-connected switch, rec...

AI Technical Summary

Problems solved by technology

The above-mentioned flexible copper bar connection is prone to shape changes due to space constraints and its own flexibility during installation operations

When connecting to the transmission terminal of the contactor, the contact between the three phases of the output terminal may be caused by the position change of the flexible copper bars, which may cause damage to the contactor and cause danger.

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