Solar technology

AC chokes, DC chokes, LCL chokes and filters for solar inverters are a rapidly growing market for Kohsel.

Kohsel designs and manufactures AC chokes, DC chokes, LCL chokes and filters with low eddy current and hysteresis losses.

Our lighter and compact designs don’t just save space, but can also help secure a reliable operation in extreme weather conditions, including underwater and high-temperature environments.

Today, more than 100,000 high-power solar inverters around the world are equipped with Kohsel chokes and filters. We benefit from expertise gained through the many development projects that we have participated in to find the optimum solution in terms of efficiency, cost, compact design and maximum output.


There are several reasons to use solar technology:

  • Produces clean energy
  • Reduces CO2 emissions
  • Reduces use of fossil fuels (coal, oil, natural gas)

LCL filter

The switching action of the solar converter generates total harmonic distortion (THDi) in power output. The LCL filter is used to reduce the harmonic distortion.

Common mode chokes

On the common mode choke both line and neutral windings are wound on the same core. Common mode chokes suppress high frequency noise (common mode noise).

RFI chokes

RFI filters suppress the radio frequency interference in the Solar Converter.

Every day, we strive to unleash the full potential in inductive design. Through our proven process, dedicated engineering and close collaboration, we detect untapped savings and optimisation potential throughout your entire value chain.