High-power three-level explosion-proof frequency converter
An explosion-proof frequency converter, three-level technology, applied in the direction of converting AC power input to DC power output, output power conversion device, electrical components, etc., can solve problems such as unfavorable production, unsuitable, bulky, etc., and achieve simplified disassembly Installing steps, reducing the effect of impact
Active Publication Date: 2012-12-19
CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO
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Problems solved by technology
[0002] Frequency converters bring low loss and high performance to power transmission applications, but due to the characteristics of high gas and high humidity underground in coal mines, frequency converters are usually unable to be used underground
In recent years, mine explosion-proof inverters suitable for underground high-gas environments have been continuously developed at home and abroad. However, due to the small underground space and poor conditions, low-power inverters can be well used in harsh conditions due to their simple structure and small size. Underground environment; while high-power inverters are complex in structure, bulky and heavy, and the most easily damaged power unit is usually installed in the innermost part, resulting in a lot of time wasted in disassembly and maintenance, which is also extremely unfavorable to normal production. Suitable for working underground
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[0011] The present invention will be further described below in conjunction with accompanying drawing.
[0012] Such as figure 1 , figure 2 and image 3 As shown, the present invention includes three identical unit assemblies 10, load guide rails 20 and rear cover 30, each unit assembly 10 includes a power unit 1, a bus bar 2, a main capacitor 3, a compensation capacitor 6 and a radiator 4, and the power unit 1 Distributed at equal intervals on the substrate 5 of the radiator 4, and fixedly connected to the substrate 5 of the radiator 4, the bus bar 2 includes an AC side and a DC side, the AC side is connected to the power unit 1, and the DC side is fixed to the main capacitor 3 by bolts On the connecting post of the busbar 2, the AC side and the DC side of the busbar 2 are connected by bolts with copper plates, the compensation capacitor 6 is connected with the power unit 1, and installed on the AC side of the busbar, each unit assembly 10 is bolted through the respective ...
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The invention discloses a high-power three-level explosion-proof frequency converter and belongs to the field of explosion-proof frequency converters. The high-power three-level explosion-proof frequency converter comprises three identical unit components, a bearing guide rail and a rear cover. Each unit component comprises power units, buses, a main capacitor, a compensation capacitor and a heat radiator, the power units are distributed on a substrate of the heat radiator at equal intervals and fixedly connected with the same, each bus comprises an alternating-current side and a direct-current side, the alternating-current sides are connected with the power units, the direct-current sides are fixed on a binding post of the main capacitor via bolts, the alternating-current sides and the direct-current sides of the buses are connected by copper plates via bolts, the compensation capacitor is connected with the power units and mounted on the alternating-current sides of the buses, and the unit components are connected through the copper plates on the direct-current sides of the buses. The high-power three-level explosion-proof frequency converter has the advantages that only corresponding units are required to be replaced in case of faults or damages, and affection on normal production from equipment maintenance can be reduced to the greatest extent.
Description
technical field [0001] The invention relates to a high-power three-level explosion-proof frequency converter, which belongs to the field of explosion-proof frequency converters. Background technique [0002] Frequency converters bring the characteristics of low loss and high performance to power transmission applications, but due to the characteristics of high gas and high humidity underground in coal mines, frequency converters usually cannot be used underground. In recent years, mine explosion-proof inverters suitable for underground high-gas environments have been continuously developed at home and abroad. However, due to the small underground space and poor conditions, low-power inverters can be well used in harsh conditions due to their simple structure and small size. Underground environment; while high-power inverters are complex in structure, bulky and heavy, and the most easily damaged power unit is usually installed in the innermost part, resulting in a lot of time...
Claims
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IPC IPC(8): H02M7/00
Inventor 谭国俊杨亮陈家兴
Owner CHAJNA MAJNING DRAJVS EHND AUTOMEHJSHN KO