Patent EP0035326A2 successfully refreshed from Google Patents.
US5764501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact and efficient power transfer system and method
Assignee: NEWVAR LLC
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Filing: 1995-06-06
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Granted: 1998-06-09
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Expires: 2015-06-06
Abstract
Abstract An electrical power transfer apparatus for connecting to a multiphase power line carrying a AC signal having a period of T AC , the apparatus including: a capacitive storage circuit; a plurality of charge transfer circuits connected to the capacitive storage circuit and each of which is connected to a different phase of the multiphase power line, wherein during operation the charge transfer circuits resonantly transfer power to and from the multiphase power line and capacitive storage circuit, wherein the resonant transfers to and from the capacitive charge storage circuit occur with a resonant frequency at least as great as 1/T AC ; and a control circuit coupled to the plurality of charge transfer circuits and which during operation causes the plurality of charge transfer circuits to transfer power between different phases of the multiphase power line via the capacitive storage circuit.
Inventors
- 👤 Rudolf Limpaecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:40
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0814; H03K17/08144; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/06; H02M3/07; H02J; H02J3/00; H02J3/18; H02J3/1821; H02J3/1835; H02J3/1864; H02M3/10; H02M3/125; H02M3/135; H02M3/137; H02M3/142; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/257; H02M5/2573; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1552; H02M7/42; H02M7/44; H02M7/48; H02M7/4826; H02M7/483; Y; Y02; Y02B; Y02B70/00; Y02B70/10; Y02E; Y02E40/00; Y02E40/10; Y02E40/30
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
139 words
An electrical power transfer apparatus for connecting to a power line carrying an AC signal having a period of T AC , said apparatus comprising: a capacitive storage circuit; a charge transfer circuit connected to the capacitive storage circuit which during operation resonantly transfers power from the power line to the capacitive storage during a power extraction phase of operation and resonantly transfers power from the capacitive storage circuit to the power line during a power injection phase of operation, wherein the resonant transfers of power to and from the capacitive charge storage circuit occur with a resonant frequency at least as great as 1/T AC ; and a control circuit coupled to the power transfer circuit and which during operation causes the power transfer circuit to perform a sequence of power extraction and power injection phases of operation.
Claim 2
Dependent Claim
139 words
An electrical power transfer apparatus for connecting to a power line carrying an AC signal having a period of T AC , said apparatus comprising: a capacitive storage circuit; a charge transfer circuit connected to the capacitive storage circuit which during operation resonantly transfers power from the power line to the capacitive storage during a power extraction phase of operation and resonantly transfers power from the capacitive storage circuit to the power line during a power injection phase of operation, wherein the resonant transfers of power to and from the capacitive charge storage circuit occur with a resonant frequency at least as great as 1/T AC ; and a control circuit coupled to the power transfer circuit and which during operation causes the power transfer circuit to perform a sequence of power extraction and power injection phases of operation.
Claim 3
Dependent Claim
33 words
The electrical power transfer apparatus of claim 1 wherein the power transfer circuit comprises a charge extraction circuit and a charge injection circuit, both of which are connected to the capacitive storage circuit.
Claim 4
Dependent Claim
37 words
The electrical power transfer apparatus of claim 2 wherein the charge injection circuit comprises a unidirectional switch and an inductor and wherein during operation the control circuit operates the unidirectional switch to perform the power injection phase.
Claim 5
Dependent Claim
37 words
The electrical power transfer apparatus of claim 2 wherein the charge extraction circuit comprises a unidirectional switch and an inductor and wherein during operation the control circuit operates the unidirectional switch to perform the power extraction phase.
Claim 6
Dependent Claim
144 words
An electrical power transfer apparatus for connecting to a multiphase power line carrying a AC signal having a period of T AC , said apparatus comprising: a capacitive storage circuit; a plurality of charge transfer circuits connected to the capacitive storage circuit and each of which is connected to a different phase of the multiphase power line, wherein during operation said plurality of charge transfer circuits resonantly transfer power to and from the multiphase power line and capacitive storage circuit, wherein the resonant transfers to and from the capacitive charge storage circuit occur with a resonant frequency at least as great as 1/T AC ; and a control circuit coupled to the plurality of charge transfer circuits and which during operation causes the plurality of charge transfer circuits to transfer power between different phases of the multiphase power line via the capacitive storage circuit.
Claim 7
Dependent Claim
144 words
An electrical power transfer apparatus for connecting to a multiphase power line carrying a AC signal having a period of T AC , said apparatus comprising: a capacitive storage circuit; a plurality of charge transfer circuits connected to the capacitive storage circuit and each of which is connected to a different phase of the multiphase power line, wherein during operation said plurality of charge transfer circuits resonantly transfer power to and from the multiphase power line and capacitive storage circuit, wherein the resonant transfers to and from the capacitive charge storage circuit occur with a resonant frequency at least as great as 1/T AC ; and a control circuit coupled to the plurality of charge transfer circuits and which during operation causes the plurality of charge transfer circuits to transfer power between different phases of the multiphase power line via the capacitive storage circuit.
Claim 8
Dependent Claim
97 words
The electrical power transfer apparatus of claim 5 wherein said plurality of charge transfer circuits comprises: a plurality of charging circuits each of which during operation couples a different phase of said multiphase AC power line to said capacitive storage circuit to transfer power from that phase to the capacitive storage circuit; and a plurality of injecting circuits each of which during operation couples said capacitive storage circuit to a different corresponding one of said phases of said multiphase power line to transfer power from said capacitive storage circuit into the phase to which it is coupled.
Claim 9
Dependent Claim
32 words
The electrical power transfer apparatus of claim 6 wherein each of said plurality of injecting circuits comprises a unidirectional switch and an inductor which is electrically coupled to the capacitive storage circuit.
Claim 10
Dependent Claim
37 words
The electrical power transfer apparatus of claim 7 wherein control circuit is connected to operate the unidirectional switches of the plurality of injecting circuits to resonantly transfer power from the capacitive storage circuit to the power line.
Claim 11
Dependent Claim
56 words
The electrical power transfer apparatus of claim 7 wherein each of said plurality of injecting circuits when coupled to said capacitive storage circuit forms a corresponding resonant circuit having a resonant frequency of 1/T i , where i is an index identifying the injecting circuit and wherein T i are all less than T AC .
Claim 12
Dependent Claim
32 words
The electrical power transfer apparatus of claim 6 wherein each of said plurality of charging circuits comprises a unidirectional switch and an inductor which is electrically coupled to the capacitive storage circuit.
Claim 13
Dependent Claim
37 words
The electrical power transfer apparatus of claim 10 wherein control circuit is connected to operate the unidirectional switches of the plurality of charging circuits to resonantly transfer power from the power line to the capacitive storage circuit.
Claim 14
Dependent Claim
32 words
The electrical power transfer apparatus of claim 11 wherein each of said plurality of injecting circuits comprises a unidirectional switch and an inductor which is electrically coupled to the capacitive storage circuit.
Claim 15
Dependent Claim
37 words
The electrical power transfer apparatus of claim 12 wherein control circuit is connected to operate the unidirectional switches of the plurality of injecting circuits to resonantly transfer power from the capacitive storage circuit to the power line.
Claim 16
Dependent Claim
60 words
The electrical power transfer apparatus of claim 12 wherein the control circuit during operation operates the unidirectional switches of said plurality of charging circuits and the unidirectional switches of said plurality of injecting circuits so as to transfer charge from one phase of the multiphase power line through said capacitive storage unit to another phase of said multiphase power line.
Claim 17
Dependent Claim
55 words
The electrical power transfer apparatus of claim 10 wherein each of said plurality charging circuits when coupled to said capacitive storage circuit forms a corresponding resonant circuit having a resonant frequency of 1/T i , where i is an index identifying the charging circuit and wherein T i are all less than T AC .
Claim 18
Independent Claim
94 words
A method for transferring power to and from a power line which carries AC power having a cycle with a period of T AC , said method comprising: resonantly extracting power from the power line into a capacitive storage circuit at a resonant frequency that is greater than 1/T AC ; resonantly injecting power from the capacitive storage circuit into the power line at a resonant frequency that is greater than 1/T AC ; and repeating the steps of resonantly extracting and injecting power from and to the power line multiple times per cycle.
Claim 19
Independent Claim
94 words
A method for transferring power to and from a power line which carries AC power having a cycle with a period of T AC , said method comprising: resonantly extracting power from the power line into a capacitive storage circuit at a resonant frequency that is greater than 1/T AC ; resonantly injecting power from the capacitive storage circuit into the power line at a resonant frequency that is greater than 1/T AC ; and repeating the steps of resonantly extracting and injecting power from and to the power line multiple times per cycle.
Claim 20
Dependent Claim
53 words
The method of claim 16 wherein the step of resonantly injecting power comprises electrically coupling an inductive circuit between the power line and the charge storage circuit, wherein said inductive circuit when electrically coupled with the capacitive storage circuit produces a circuit having a resonance frequency that is greater than 1/T AC .
Claim 21
Dependent Claim
53 words
The method of claim 16 wherein the step of resonantly extracting power comprises electrically coupling an inductive circuit between the power line and the charge storage circuit, wherein said inductive circuit when electrically coupled with the capacitive storage circuit produces a circuit having a resonance frequency that is greater than 1/T AC .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |