Power Capacitors

The DC link section of a power conversion circuit provides a DC voltage between the input and output sections of a converter. All types of power conversion require this DC link stage, which “links” the input to the output. The DC Link provides stored energy to the Converter/Inverter section and can also provide filtering of switching transients generated from the converter/inverter.

Power Electrolytic and Film Capacitors are used in this DC link section. Film capacitors have higher voltage ratings (>600VDC) and ripple current capabilities, but lower bulk capacitance. Electrolytic capacitors have more bulk capacitance, but lower voltage (<550VDC) and ripple current. Each type has benefits and drawbacks and the specific type used is usually determined by which characteristics are best for a particular design.

Richardson RFPD offers electrolytic and film capacitors from Cornell Dubilier, Kemet, Kendeil and United Chemi-Con as well as a variety of other capacitors including AC & DC oil-filled capacitors, harmonic filter capacitors, snubber capacitors and mica capacitors.

Featured Manufacturers  Power Capacitors

Related Content

October 11, 2022
This white paper details how aluminum electrolytic capacitors’ small size, light weight and attractive capacitance value range are ideal for use in motor controllers.

Energy & Power Design Support

Allow us an opportunity to assess your project and help bring your vision to market faster.

About our Team of Experts

Our team of global applications engineers are available to answer your questions to ensure your power conversion or energy storage system design meets your performance expectations. If you’re transitioning from silicon to gallium nitride (GaN) or silicon carbide (SiC), we’ll help identify the right switching device to achieve the power density and increased efficiency your application requires.