Electrolysis circuit and system startup mode
OwnerSven Schumann, Nemanja Calicinventors
Life of this patent
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Abstract
An electrolysis electrical circuit 14 operatively connected to an AC power source 16 and an electrolysis system 10 is provided, the circuit 14 having: an IGBT rectifier 20 configured to convert the AC power source 16 current to DC and to accommodate fast switching; a DC bus capacitor 30 configured to control the voltage of the downstream DC bus and to power the electrolysis system 10; and a polarization rectifier 40 configured to pre-charge the DC bus capacitor 30 prior to startup of the electrolysis system 10, whereby an inrush current from the AC power source 16 to the DC bus capacitor 30 is reduced.
Claims18
An electrolysis electrical circuit 14 operatively connected to an electrolysis system 10, comprising:
- an IGBT rectifier 20 arranged downstream of an AC power source 16, the IGBT rectifier 20 configured to convert the AC power source 16 current to DC;
- a DC bus capacitor 30 arranged downstream of the IGBT rectifier 20, the DC bus capacitor 30 configured to control the voltage of the downstream DC bus and to enable powering of the electrolysis system 10;
- and
- a polarization rectifier 40 arranged downstream of the DC bus capacitor 30 and in parallel to the IGBT rectifier 20, the polarization rectifier 40 configured to pre-charge the DC bus capacitor 30 prior to startup of the electrolysis system 10,
- whereby an inrush current from the AC power source 16 to the DC bus capacitor 30 is reduced.
An electrolysis system 10 startup mode, comprising:
- pre-charging a DC bus capacitor 30 prior to startup of the electrolysis system 10 via a polarization rectifier 40 arranged downstream of the DC bus capacitor 30;
- receiving AC power from an AC power source 16 in order to startup the electrolysis system 10;
- reducing a startup inrush current from the AC power source 16 to the DC bus capacitor 30 by pre-charging the DC bus capacitor 30;
- converting the AC power to DC power via an IGBT rectifier 20 arranged downstream of the AC power source 16 and configured to accommodate fast switching;
- and
- enabling powering of the electrolysis system 10 via the DC bus capacitor 30.
Dependencies are inferred from the claim text.