High power power electronic capacitors

High power power electronic capacitors The core application of high-power power electronic capacitors is to provide DC link support for devices such as photovoltaic inverters, wind power converters, energy storage PCS, industrial frequency converters, and new energy vehicle electric drives, responsible for stabilizing the DC bus voltage, withstanding transient high-power shocks, and filtering out ripple currents. The most mainstream choice in this type of scenario is metalized polypropylene film capacitors, for direct reasons: they can self heal, have low losses, withstand high currents and surges, and have a lifespan of usually over 100000 hours. Typical application scenarios: New energy generation: DC Link capacitors are used in photovoltaic inverters and wind power converters to stabilize bus voltage, absorb instantaneous surge current, and reduce the failure rate from 5% to below 0.2%. Industrial drive: The DC link and filtering components of frequency converters and servo drives are responsible for reactive power compensation, harmonic filtering, and voltage stability. Electric vehicles require high voltage levels and reliability for the DC support capacitors of traction inverters and onboard chargers. Rail transit: DC Link key components for locomotive and subway traction converters. Transmission and distribution: filtering, static reactive power compensation, and series compensation devices for high-voltage direct current transmission.