Graduated dry type inversion capacitor

Abstract

The invention relates to a capacitor, in particular to a graduated dry type capacitor, and specifically to a dry type inversion capacitor which is used for converting direct currents into alternating currents. According to the technical scheme, the graduated dry type inversion capacitor comprises a capacitor shell, a first leading-out connector and a second leading-out connector, the first leading-out connector and the second leading-out connector are located at the top end of the capacitor shell, a core is encapsulated in the capacitor shell and comprises core films with sheet resistance values distributed in a graduated mode, a first metal-sprayed layer and a second metal-sprayed layer, the first metal-sprayed layer and the second metal-sprayed layer are located on the core films, the first leading-out connector is electrically connected with the first metal-sprayed layer, and the second leading-out connector is electrically connected with the second metal-sprayed layer. The graduated dry type inversion capacitor is compact in structure, high in high voltage resistance, high temperature resistance and shock resistance, low in cost, convenient to manufacture, and safer and more reliable in use.

Description

technical field [0001] The invention relates to a capacitor, in particular to a gradient dry capacitor, in particular to a dry inverter capacitor for converting direct current into alternating current. Background technique [0002] For the safe use of some high-precision instruments and equipment, such as solar inverter equipment, capacitors used in wind power generation equipment require inverter capacitors. Existing capacitors have various structures. For example, the document with the publication number CN102637524A discloses a power capacitor, which includes a capacitor case and a terminal fixed on the capacitor case. The terminal includes a ceramic insulator and is fixed on the lower part of the ceramic insulator. The metal connector on the outer wall, the outer wall of the lower part of the ceramic insulator is provided with an annular positioning boss; the capacitor housing is provided with a mounting seat, and the metal connector is fixed on the metal connector by we...

AI Technical Summary

Problems solved by technology

The film used in the above capacitor is an ordinary film. Under the condition of withstand voltage, the heat dissipation is large, the capacity is easy to drop, the impact resistance is small, and the film is damaged; the welding is complicated, and the metal connector on the ceramic insulator needs to be welded to the mounting base. On; many parts are used, the cost is high, the production is complicated, the efficiency is low, and the reliability is low

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