Overview

What is a DryDCap?

For consistent reliability, high capacity, increased safety and a minimal environmental footprint, a modern voltage source converter topology equipped with DryDCap capacitors could be the answer you are looking for.

Traditional capacitors use oil and are susceptible to leaks. DryDCap capacitor is a non-oil, soft cell DC capacitor for modern convertor topologies, where operators are looking for a voltage source converter solution with high capacity and reliability, while maintaining minimal environmental footprint.

DryDCap capacitor is constructed of small modules, each equipped with self-healing metallized film boosting the product’s reliability. This film enables the capacitor to progressively reduce its capacity and reduces the risk for short-circuiting and complete power outage in case of a failure.

Thanks to a segmented design, DryDCap capacitors provide an added level of safety to end-of-life behavior and make them especially suitable for a wide range of applications such as HVDC and SVC converters, and motor drives where high reliability is needed.

Applications

Since DryDCap contains no oil, it is a safer alternative totraditional capacitors for converters used in hazardous environments such as on oil platforms. Its high energy density capability allows for compact designs that can provide the same capacity as larger oil-based capacitors, thus enabling space saving. The compact design allows it to be installed on the same support as the IGBT valves, thus reducing inductance and consequential stress on the IGBTs, resulting in more reliable converter operation. HVDC, FACTS and motor drives all benefit from this high capacity, dry solution.

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