The invention relates to a combined AC-DC to DC converter. The converter provides the option of coupling to an AC supply source with at least one phase and the further option of coupling to at least one DC supply source. The converter obtains supply from at least one supply source at a time; and th
The invention relates to a combined AC-DC to DC converter. The converter provides the option of coupling to an AC supply source with at least one phase and the further option of coupling to at least one DC supply source. The converter obtains supply from at least one supply source at a time; and the converter contains controllable contact means that are, upon switching between supply sources, capable of connecting and disconnecting the individual supply sources to/from the converter; whereby a pulse signal is generated. The converter contains at least one coil that is in connection with at least one DC output. The proposed converter distinguishes itself over the prior art in that switching between supply sources is accomplished by means of the contact means over a period of time, where the pulse signal is divided into periods; and wherein the periods alternatingly originate from at least one first supply source and at least one second supply source; and wherein the current pulses from the first supply source is regulated in dependence on the current pulses from the second supply source; and wherein the converter contains means for voltage regulating at least one DC output. Hereby a flexible converter is obtained that can obtain supply from an AC supply source and one or more DC supply sources; and wherein switching between a first supply source and a second supply source can be accomplished without supply failures; and wherein, in overload situations, it is possible to draw on two or more supply sources.
대표청구항▼
The invention claimed is: 1. A converter for providing at least one DC output from at least one AC supply with at least one phase and at least one DC supply, the at least one AC supply supplying an AC signal comprising positive and negative half-periods, the converter comprises at least one coil th
The invention claimed is: 1. A converter for providing at least one DC output from at least one AC supply with at least one phase and at least one DC supply, the at least one AC supply supplying an AC signal comprising positive and negative half-periods, the converter comprises at least one coil that is in connection with the at least one DC output, the converter contains controllable contact means for connecting and disconnecting the at least one AC supply and the at least one DC supply to/from said converter wherein connecting and disconnecting of the AC and DC supplies to/from said converter is based on phase information of the AC signal, whereby the AC signal fed to the coil is divided into periods, wherein the periods of the AC signal alternatingly originate from either positive or negative half-periods of the AC signal and current pulses from the at least one DC supply; and wherein the current pulses from the at least one DC supply are regulated in dependence of the AC signal; and wherein the converter contains means for voltage regulating the at least one DC output. 2. A converter according to claim 1, wherein the at least one AC supply source is a single-phase AC source. 3. A converter according to claim 1, wherein the at least one AC supply source is a poly-phase AC source. 4. A converter according to claim 1, wherein--on the basis of a signal from a current detector that measures the current through a first coil of the at least one coil, a control circuit has means for selectively connecting a second terminal of the first coil to a first DC supply of the at least one DC supply, and to a common point of reference; and that the current through the first coil flows to a first DC output of the at least one DC output of the converter during periods of time, where the second terminal of the first coil is not connected to the common point of reference; and that the converter has means for connecting and disconnecting, respectively, a first AC supply of the at least one AC supply source to/from the second terminal of the first coil. 5. A converter according to claim 1, wherein at least one converter is used to form a positive DC output relative to a common point of reference; and at least one converter is used to form a negative DC output relative to a common point of reference. 6. A converter according to claim 5, wherein the at least one AC supply source is shared by the at least one converters that is/are used to form the positive DC output voltage and the at least one converters that is/are used to form the negative DC output voltage, respectively, relative to a common point of reference. 7. A converter according to claim 4, wherein the means for selectively connecting includes a controllable switch; and that the controllable switch can be regulated to be connected for at least a part of every other half-period. 8. A converter according to claim 4, wherein the means for selectively connecting includes a controllable switch; and that the controllable switch can be regulated to be connected for at least a part of every other half-period; and that the controllable switch is typically connected in burst series. 9. A converter according to claim 4, wherein the means for selectively connecting includes semiconductors used as controllable switches comprising at least one of a field power transistor, bipolar transistor, Insulated Gate Bipolar Transistor (IGBT), Gate Turn-Off Tyristor (GTO) and Injection Enhanced Gate Transistor (IEGT). 10. A converter according to claim 1, wherein, in an overload situation, the current from the at least one AC supply source is limited to a constant maximum value, in that supplemental energy is supplied by the at least one DC supply source.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (5)
Dien Ghing-Hsin,TWX, Dual/multiple voltage level input switching power supply.
Moriguchi Haruo,JPX ; Arai Toru,JPX ; Fujiyoshi Toshikazu,JPX ; Ono Masayuki,JPX ; Hamada Satoshi,JPX ; Ishii Hideo,JPX, Inverter and DC power supply apparatus with inverter used therein.
Hjort, Thomas Enne; Pedersen, Michael; Mathiesen, Henrik; Nielsen, Henning Roar; Olsen, Richard Dyrmose, Method and apparatus for providing uninterruptible power.
Hjort, Thomas Enné; Pedersen, Michael; Mathiesen, Henrik; Nielsen, Henning Roar; Olsen, Richard Dyrmose, Method and apparatus for providing uninterruptible power.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.