About 14 results
https://drivepatents.com/patents/997653 · 3 Oct 2012
A dc energy store (2) that includes auxiliary systems (68) can be operated in one or more different modes, including a self-supporting mode, an island mode and a normal mode. In the self-supporting mode a first controller (24) uses a voltage demand signal ...
https://drivepatents.com/patents/998585 · 5 Sep 2012
A converter control arrangement (18) for regulating the output current of a dc source power converter (16) comprises a current regulator (20) for regulating the output current based on a comparison of an output current value (I out ) of the dc source power...
https://drivepatents.com/patents/999530 · 8 Aug 2012
A converter control arrangement (18, 48) for regulating the output voltage of a dc source power converter (16) comprises a dynamic droop control device (26) including first and second droop controllers (30, 32) in which the droop rate of the second droop c...
https://drivepatents.com/patents/1000191 · 18 Jul 2012
A static energy supply unit (2) has an energy store (4) connected to an ac supply network (SN) by a power converter (8). A unit controller (20) for the static energy supply unit (2) includes an amplitude controller (26), a phase controller (30) and a frequ...
https://drivepatents.com/patents/1002494 · 9 May 2012
The present invention relates to a method of operating a dual fed system where power is supplied to a electrical load (T1) from first and second ac busbars (2a, 2b) at a ratio that achieves a desired level of exhaust emissions such as nitrogen oxides (NO x...
https://drivepatents.com/patents/1002779 · 2 May 2012
The ship (10) has a longitudinal propulsion chain (14) comprising longitudinal propellers (34) e.g. port or starboard propellers, to move the ship along a longitudinal direction (X). Electric motors (36) e.g. synchronous or asynchronous motors, drive the p...
https://drivepatents.com/patents/1005330 · 8 Feb 2012
A system (10) for generating electrical power is described. The system (10) comprises a turbine (11) that is mechanically connected to a generator (12), wherein the generator (12) is electrically connected via a first converter (13) to a load (15). The fir...
https://drivepatents.com/patents/1007105 · 14 Dec 2011
A dc energy store system includes an ac power supply (14), an AC/DC power converter (10), a DC/DC power converter (4) and a dc energy store (2). DC terminals of the AC/DC power converter (10) are connected to the DC/DC power converter (4) by a first dc lin...
https://drivepatents.com/patents/1007069 · 14 Dec 2011
In a marine power distribution and propulsion system with a medium voltage distribution busbar (MVAC1) and a low voltage distribution busbar (LVAC1) then a rectifier (SC) is controlled, optionally to provide active filtering and static compensation benefit...
https://drivepatents.com/patents/1008683 · 12 Oct 2011
A power transmission system may include a plurality of renewable-energy devices (4a, 4b, 4c) such as wind turbines or subsea turbines. The devices are connected together in parallel to a subsea cable (10) that carries an ac transmission voltage. Each devic...