Detachable structure of bus electrolytic capacitor of photovoltaic inverter

A photovoltaic inverter, electrolytic capacitor technology, applied in photovoltaic power generation, irreversible DC power input conversion into AC power output and other directions, can solve the problem of the life bottleneck of bus electrolytic capacitors, avoid repeated installation and debugging, reduce maintenance costs , The effect of improving the life of the whole machine

CN102176642AInactive Publication Date: 2011-09-07WUXI VICTORY POWER NEW ENERGY TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2011-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a detachable structure of a bus electrolytic capacitor of a photovoltaic inverter. The detachable structure comprises an electrolytic capacitor module. The electrolytic capacitor module consists of an electrolytic capacitor and an electrolytic capacitor module printing circuit board (PCB); the electrolytic capacitor is arranged on one surface of the electrolytic capacitor module PCB; a positive terminal and a negative terminal of the electrolytic capacitor are inserted into circular holes corresponding to the electrolytic capacitor PCB and are welded and fixed; the other surface of the electrolytic capacitor PCB is connected with a circuit of a BUS capacitor set through copper foils; and the electrolytic capacitor module PCB is connected with a main power board through a supporting connecting terminal. The detachable structure can prevent the whole machine from being repeatedly installed and debugged, and can greatly reduce the maintaining cost. Moreover, the service life of the product can be prolonged by changing the electrolytic capacitor module, so the competitiveness of the product is improved.
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Description

technical field

[0001] The invention relates to a detachable structure of an electrolytic capacitor of a bus bar of a photovoltaic inverter, which belongs to the technical field of photovoltaic inverters. Background technique

[0002] At present, in the field of photovoltaic inverters, electrolytic capacitors are a key component, which has its own defects of short service life. At present, in the field of photovoltaic inverters, there are basically two processing methods, such as figure 1 As shown: One is to use film capacitor 2 instead of electrolytic capacitor 1. Although it can prolong the service life to a certain extent, as a bus capacitor, because of the small value of a single film capacitor, the number of film capacitors used is much larger than that of electrolytic capacitors. Due to the problem of a substantial increase in product costs, and the number of its use is much larger than that of electrolytic capacitors, it indirectly increases the size of the whole mach...

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Embodiment Construction

[0011] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0012] like image 3 Shown: includes electrolytic capacitor 1, electrolytic capacitor module PCB board 3, electrolytic capacitor module 4, support connection terminal 5, main power board 6, etc.

[0013] The present invention changes the traditional processing method of using film capacitors instead of electrolytic capacitors and complete machine replacement, and separates the bus electrolytic capacitors from the main power board to form an electrolytic capacitor module. The electrolytic capacitor module 4 is composed of electrolytic capacitor 1, electrolytic capacitor module Composed of PCB board 3, the electrolytic capacitor module PCB board 3 is placed on one side of the electrolytic capacitor 1, the electrolytic capacitor 1 itself has a positive terminal and a negative terminal, and the positive terminal and the negative terminal of the electrolyti...