Capacitor bank for a subsea power cell, subsea power cell and variable frequency drive having a subsea power cell
AssigneeSiemens Aktiengesellschaft
InventorsOve Boe, Ivar Haakon Lysfjord, Stian Skorstad Moen, Geirfinn Sirnes, Gunnar Snilsberg
Life of this patent
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Abstract
A capacitor bank includes a plurality of capacitors; a plurality of resistors, each of the capacitors being in series with at least one of the resistors; and a plurality of diodes, each of the diodes being in parallel with one of the resistors. A subsea power cell for converting an electrical three phase input into an electrical one phase output, includes the capacitor bank; a diode rectifier connected to the three phase input; and a plurality of Insulated Gate Bipolar Transistors connected to the electrical one phase output.
Claims13
A capacitor bank of a subsea electrical component, comprising:
- a plurality of energy storage capacitors;
- a plurality of resistors, each of the plurality of energy storage capacitors being in series with at least one of plurality of the resistors;
- and
- a plurality of diodes, each of the plurality of diodes being in parallel with one of the plurality of resistors for by-passing the respective resistors during discharge of the plurality of respective energy storage capacitors, wherein each of the plurality of resistors is in series with a respective one of said plurality of energy storage capacitors, each pair of one of the plurality of resistors and one of the plurality of energy storage capacitors being respectively connected in parallel with the other pairs of one other of the plurality of resistors and one other of the plurality of energy storage capacitors.
A subsea power cell for converting an electrical three phase input into an electrical one phase output, comprising:
- a casing;
- a diode rectifier connected to the electrical three phase input;
- a plurality of Insulated Gate Bipolar Transistors connected to the electrical one phase output, the diode rectifier and the plurality of Insulated Gate Bipolar Transistors being mounted on a same side of the casing in thermal contact with a heat sink of the subsea power cell;
- and
- a capacitor bank comprising:
- a plurality of energy storage capacitors,
- a plurality of resistors, each of the plurality of energy storage capacitors being in series with at least one of the plurality of resistors,
- a plurality of diodes, each of the plurality of diodes being in parallel with a respective one of the plurality of resistors for by-passing respective the resistors during discharge of the plurality of respective energy storage capacitors, wherein each of the plurality of resistors is in series with one of said plurality of energy storage capacitors, each pair of one of the plurality of resistors and one of the plurality of energy storage capacitors being respectively connected in parallel with the other pairs of one other of the plurality of resistors and one other of the plurality of energy storage capacitors.
Dependencies are inferred from the claim text.