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Secure your power supply with NO-BREAK KS®
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  • 2016.08.22 New CEO for EURO-DIESEL


    Breaking News: The Board of Directors of Euro-Diesel Holding SA today announces the appointment of Maarten Barmentlo as the new Chief Executive Officer (CEO) of the Euro-Diesel Group.
    Discover our Press release : link
  • 2016.08.03 E1 DYNAMICS PRESENTS DRUPS: A Technical Review

    Flyer E1

  • 2016.06.20 EURO-DIESEL in the News - Jobs Regions 17062016


    Bien que ne faisant pas directement partie de l’aéronautique à proprement parler, la société EURO-DIESEL entretient néanmoins des liens étroits avec le secteur. Le plus évident est probablement le rôle essentiel joué par son produit phare auprès d’un de ses clients les plus importants: les aéroports & tours de contrôle du trafic aérien. Le très haut degré de technicité de ce produit le rend également comparable aux technologies de l’aéronautique. Nous avons rencontré Philippe Gillain, administrateur délégué d’EURO-DIESEL, qui nous explique les spécificités de cette entreprise liégeoise, et les profils qui contribuent à sa réussite.


  • 2016.05.19 Data Center Wold 2016 - Prize Draw Winner

    EURO-DIESEL (UK) Ltd exhibited at Data Centre World 2016 at the London Excel on the 12-13 April. A major event in the Data Centre calendar - this year’s show was bigger and better than ever with over 250 exhibiting companies. With strong footfall to the EURO-DIESEL stand, the team were kept busy meeting new and existing contacts from across the industry.    

  • 2016.03.14 Journey to Singapore


    The first of eight 2500 kVA NO-BREAK KS®7e units’ arrived to its final destination in Singapore.   


    NO-BREAK KS7 Singapore NO-BREAK KS7 Singapore NO-BREAK KS7 Singapore


  • 2016.03.10 Middle East Electricity exhibition 2016


    In early March, our Middle Eastern team participated in the Middle East Electricity exhibition which was held in Dubai.  It was a great opportunity to present the many projects we have carried out in the region covering datacentres, airports and municipality applications and to share the impressive references EURO-DIESEL has received for these projects. [+]

How it works : System description

System Description

The NO-BREAK KS® is such a simple concept that one might think of it as a conventional generator-set. It is made up of a Diesel Engine separated/coupled to a Stato-Alternator, via an Electromagnetic Clutch. The Stato-Alternator is the combination of the Kinetic Energy Accumulator and a Synchronous Machine.


The NO-BREAK KS® also includes a control panel and a choke/power panel.


NO-BREAK KS® Diesel Rotary UPS


Description of the Stato- Alternator

The heart of the NO-BREAK KS® is the kinetic energy accumulator; a clever but simple system to store and retrieve kinetic energy.

The kinetic energy accumulator consists of two rotating parts:

1- The inner rotor, which is the main drive shaft, rotates at 1800 rpm (60 Hz) normally powered by the utility spinning the synchronous machine.The inner rotor contains two sets of windings; a three-phase AC winding and a DC winding.  These windings control the energy storage and retrieval of the system.

2- The outer rotor, or drum  spins at a relative 3000 rpm. (See diagram below).  The speed of this drum is controlled by the AC and DC Windings of the inner rotor.

How does it work? - Energy storage 

In conditioning mode, the drive shaft is spinning at 1800rpm, and the AC winding is powered to generate a rotating magnetic field which turns the drum to the maximum speed of 3000 rpm.

The differential speed of the outer drum compared to the inner drive shaft is only 1200 rpm.  This results in a less stressful operating environment for the bearing and results in very long life of the product before major service intervals -10 years.

The  outer drum stores the kinetic energy needed to bridge the time required by the deisel engine to start and connect to the drive shaft.

The kinetic energy accumulator's drum is what makes the system a UPS.  The drums are capable of providing up to 2400kW UPS in a single NO-BREAK KS® module.

How does it work? -Energy retrieval 

When a utility outage occures at the input of the system, the DC winding of the inner rotor is energized and the outer drum is electrically coupled to the inner rotor by an induced field.  The kinetic energy of the drum then "drives" the inner rotor via this induced field.  This energy transfer is regulated by accurately controlling the current injected into the DC winding ALWAYS maintaining the output frequency to 60Hz.

The diesel engine is started and coupled to the inner rotor drive shaft of the system via the electormagnetic clutch.The load is then slowly tranferred to the diesel engine.

The entire energy storage and retrieval system is totally brushless excitation.  Helping to provide a system with very minimal maintenance needs.

Cross-section of the Stato-Alternator

Kinetic Energy Accumulator

To know how the NO-BREAK KS® operates, click here.