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Reversible group BOOST converters

EFFICIENT-BOOST

Using experience accumulated over more than 100 years working in the field of traction power substations, Sécheron has designed BOOST technology which offers a unique solution for fully reversible traction power substations.

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Reversible group BOOST converters – BOOST
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Environnement produit

The BOOST uses an IGBT inverter (INV-I), which is connected to the secondaries of a traction transformer. When energy flows from the DC network during train deceleration, the INV-I recovers it as usual.

During train acceleration, the INV-I injects reactive power into the transformer secondaries, thereby boosting the AC and DC voltage at the rectifier output.

This innovative operating principle offers the following advantages:

  • Utilising a robust diode rectifier
  • Having complete control over the traction power substations by including an energy recovery system
  • Repurposing existing inverter modules designed for energy recovery
  • Improved characteristics compared to a thyristor rectifier:
    – Enhanced power factor
    – Decreased harmonics
    – Reduced transformer power
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