Partnering opportunity

Device for automatic testing of power capacitors offered for licensing


Researchers from the Czech university have developed and successfully implemented a special device that allows to test power capacitors in the mode when the alternating current passes through them, usually with high frequency and units up to tens of amperes, while the needed electric power and demands for the testing equipment are minimized. The researchers are looking for manufacturing partners interested in a licensing agreement.

Partner sought

The university would like to cooperate with a partner from industry (e.g. manufacturers of power capacitors), who would like to manufacture the offered technology based on licence agreement.


A team of the Czech researchers have developed and successfully tested a new device, which principle is based on the invention that tested power capacitor is complemented with a low-loss inductor with loss factor comparable to the loss factor of the tested power capacitor (or lower) to form a parallel oscillating circuit. Nowadays, the capacitors are tested using Ohms method. The capacitor is feed with power signal source and the Voltage and current values are observed. The drawback of such tests is that all the current and voltage used for the test must be supplied with the signal source and the source is loaded with reactive power. The newly introduced equipment enables ultra-precise reactive-power compensation of the tested capacitor in the measuring circuit and matching of the measuring circuit to the driving generator by completing the tested capacitor with the inductor so that the resonant circuit is tuned to the measuring frequency. The inductor’s inductance is set in the way that at the testing frequency it has the same reactance as the tested power capacitor. The described solution ensures the needed precise compensation of the tested capacitor’s reactive power, which can be viewed as complementing the tested capacitor with the inductor in the way that creates an oscillating circuit tuned at the testing frequency, by automatic correction of the measuring frequency according to instantaneous value of the oscillating frequency of the measuring circuit. The frequency is controlled by a feedback loop with the voltage-controlled oscillator, integrator and phase detector. The researchers are looking for manufacturing partners (e.g. manufacturers of power capacitors) interested in a licensing agreement. The subject of the licensing will be know-how (power capacitor principle, detailed scheme of working etc.) as well as know-how for manufacturing of the power capacitor device.

Advantages and innovations

-Highly accurate compensation of the reactive power of the tested capacitor in the measuring circuit and matching the measuring circuit with the exciter generator - The newly developed and tested power capacitor reach the condition when the exciter generator supplies no reactive power and the delivered real power, covering losses in the measuring circuit elements - The device allows (for stabilization of the tested capacitor) load level during testing.

Development stage

Already on the market

Intellectual Property Rights (IPR)

Patent(s) applied for but not yet granted,Patents granted

Register your interest

How it works

  • Tell us about yourself
  • We’ll discuss with you
  • We put the right partners in touch

EEN help you find the right partner, rather than you going it alone.

Our role is to review and collate the most suitable submissions, and then send them to the client who posted the opportunity. We consult with you, and the client, to make the process professional and easy.

These are live opportunities. Your registration of interest on the site is just like a professional approach to a business at a networking event. To stand the best chance of success, make your submission really sing. Sell why the client who posted the opportunity should work with you. Excite them. Ask questions. Try and avoid copy and pasting words from elsewhere.

Once the client has chosen their partner, we'll introduce them over email and keep in touch with both parties to see how it's going. Sometimes things progress quickly. Sometimes because of changing priorities for either party, things progress slowly, but you never know - your next big business break could start right here.

?What value does EEN add?
This is your pitch: remember to include your unique selling points (USP) and why someone would want to do business with you
Tell us why you are a good fit for this opportunity, and why you think you're the right people for this partnership
If there's anything additional, or commercially sensitive you'd like to know about this opportunity, please let us know

When you entered your email address above, we emailed you a code to verify you're human and have access to that account.

?What's this?

What next?

To finish up, we just need some extra details about you and your company