Inverter High-capacity Filter Capacitors Developed

Converter has been widely used in the industrial control field. The film capacitors'characteristics are High voltage, low inductance and long life. So the organic film capacitors used in the converter for DC filtering, it can improve the reliability of the machine.The article Designed and manufactured a metalized polypropylene film capacitor for Converter DC filter. mainly work under the processes:1,The capacitor design:The capacitor use Treofan PHD polypropylene film for dielectric. it can work in a high frequency, high voltage and high temperature conditions ;the big capacitor divided into 15 small capacitors, and every small capacitor with 10μF capacity. With it, the voltage capability of capacitor was improved; The large area leaf metal connect the small capacitors, it improved current carry ability and reduce inductors of the capacitor; Enclosure and electric pole of the capacitor was manufactured by shooting technique, it easy for machining with high strength and precision positioning for capacitor.2,The production process design : Capacitor production processes contain 15 production processes and 6 quality inspection process. in the process of winding, the constant tension technology was used, it can improve the voltage ability levels of the capacitor; in the spay metal process, the arc and acetylene spay metal equipment was used ,it good for metal face connection; in the welding process, the spot welding technology was used , the heat of the welding equipment was accuracy controlled. The welding quality was ensured in a good condition; in addition the high frequency test andAC energy technology could improve the quality of the capacitor too. Experiment and test data show that the capacitor has high reliability, compared with the similarity produce of foreign companys, every performance approach the latter's. By the use of the consumer, the capacitor fully fit for converter filtering.