About 41 results
https://drivepatents.com/patents/999353 · 15 Aug 2012
An auxiliary power source for bi-directional power supply is disclosed by the present invention, which includes a bi-directionally isolated converter (21), a first non-isolated converter (22), a second non-isolated converter (23), a first merging circuit s...
https://drivepatents.com/patents/999618 · 8 Aug 2012
A DC power supply feeding system 1 according to one embodiment, includes a DC voltage power supply 2 that outputs a specified voltage by using a commercial AC power supply, a varying voltage power supply 3,4 that generates power by using natural energy and...
https://drivepatents.com/patents/999743 · 1 Aug 2012
A power flow regulator includes a plurality of bi-directional DC-DC converters, each of said converters comprising a first input, a second input, a first output and a second output; and a capacitor electrically connected between the first and second inputs...
https://drivepatents.com/patents/1000407 · 18 Jul 2012
A current sharing method and device for a DC power supply are provided, and the method includes: taking a latest detected bus current as a reference current to perform current sharing control on a local host current; calculating and timing sending time of ...
https://drivepatents.com/patents/1005371 · 8 Feb 2012
An apparatus includes a DC-link (26), a voltage converter (14), a bus voltage controller (36), and a supervisory controller (12). The voltage converter (14) is configured to convert a first DC voltage into a second DC voltage based on a command signal and ...
https://drivepatents.com/patents/1008908 · 5 Oct 2011
The arrangement has two coils arranged in a positive branch and a negative branch of a boost converter. An anode of the positive branch connects the coils with a half bridge circuit of power transistors and diodes, and a cathode of the negative branch conn...
https://drivepatents.com/patents/1011213 · 6 Jul 2011
A power collection and transmission system can be used with a plurality of energy devices such as off-shore wind turbines (2), for example. The energy devices are grouped into two or more clusters. The system includes a dc collection network (N1, N2...N14)...
https://drivepatents.com/patents/1011382 · 29 Jun 2011
The method involves selecting a basic parameter for transition from a stationary state of a direct current transmission network into another stationary state of the direct current transmission network. Trajectories determining transient characteristics dur...
https://drivepatents.com/patents/1015090 · 9 Mar 2011
The device has an energy unit (10) formed as a fuel cell stack, and another energy unit (12) coupled to an energy control element e.g. direct current-direct current (DC/DC) converter (14) and diode. The control element realizes voltage adjustment for achie...
https://drivepatents.com/patents/1071785 · 14 Dec 2005
In master-slave current-tracking load-share systems using switching power supplies, a method and apparatus for preventing current recirculation at light-load and no-load operational conditions. The slave power supply is run in a discontinuous mode when loa...