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Adapter device for multiple inverters and three-phase power grid

A technology for three-phase power grids and inverters, which is applied in the direction of preventing wrong connection devices, coupling devices, circuits, etc., can solve problems such as troublesome inverters, complicated installation, and error-prone, and achieve simple structure, improved work efficiency, The effect of easy installation

Inactive Publication Date: 2012-12-19
SAMIL POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve this goal, it is usually judged by the installer, but when there are many inverters, the installation is more complicated, the efficiency is very low, and it is easy to make mistakes; another way is to make three kinds of inverter output terminals, corresponding to For L1L2, L2L3, and L1L3 of the power grid, since the output terminals and inverters are fixedly connected, from the perspective of production consistency, it is more troublesome to produce three kinds of inverters

Method used

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  • Adapter device for multiple inverters and three-phase power grid

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0016] As shown in the figure, a device for connecting multiple inverters to a three-phase power grid includes a five-core cable 3 connected to the three-phase five-wire grid, a five-core socket 1 drawn from the five-core cable, and a grid-connected inverter 4 The four-core plug 2 drawn out, the five-core socket 1 is circular, and the five cores are P11, P12, P13, P1N, PE, wherein the distances from P11, P12, P13 to the center of the circle are equal, and P11, P12, P13 to The angle between the straight lines connecting the center of the circle is 120°, P1N is at the center of the circle, and PE is composed of three circular arcs with the center of the circle as the dot. The four-core plug 2 is circular, and the four cores are P21, P22, P2N, PE, wherein the distances from P21, P22 to the center of the circle are equal in length, and the angle between the str...

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Abstract

The invention discloses an adapter device for multiple inverters and a three-phase power grid. The adapter device comprises five-core cables, five-core sockets and four-core plugs. The five-core cables are connected to three phases and five wires of the power grid, each five-core socket is led out of the corresponding five-core cable, and each four-core plug is led out of the corresponding grid-connected inverter. The adapter device is simple in structure and convenient to install, and has the advantage of fool-proof property, and work efficiency can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of inverters, in particular to a matching device for multiple inverters and a three-phase power grid. Background technique [0002] The inverter connected to the grid is generally a single-phase inverter. When the grid-connected inverter is connected to the three-phase grid, the output lines of the inverter are P21, P22, P2N, and PE, where P21 and P22 are related to the phase voltage of P2N. Both are 120V, and the power grid is a three-phase five-wire system (L1, L2, L3, N, PE). The phase wires of the inverter are connected to the two phases of the power grid, and the neutral wire is connected to the neutral wire of the power grid. In order to balance the three-phase power when multiple inverters are connected to the grid for power generation, the same number of inverters must be connected between the live wires L1L2, L2L3, and L1L3 on the grid. In order to achieve this goal, it is usually judged by the ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R31/02H01R13/02H01R13/64
Inventor 柳林徐应群李义
Owner SAMIL POWER
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