EP0498553A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adaptive control method for power converters
Assignee: Lambda Electronics Inc
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Filing: 1992-01-27
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Granted: —
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Expires: 2012-01-27
Abstract
Abstract Adaptive control of converters is provided to achieve, in one case, a constant current characteristic by controlling input power as a function of the ratio of output voltage to output current. In another class of circuits, input current to the converter is controlled under an adaptive control arrangement in response to output voltage/output current ratios which may also be modified by input current or input voltage. The adaptive control may be augmented with low frequency negative feedback control loops.
Inventors
- 👤 Isaac Cohen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:54
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; G; G05; G05F; G05F1/00; G05F1/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A method of regulating the output of a power converter comprising the steps of: (1) monitoring the output voltage and current parameters; (2) deriving a control function F by generating a control signal as a function of factors including a ratio involving said output current and output voltage; (3) controlling the input current as a function of a constant K and said control function F.
Claim 2
Dependent Claim
18 words
The method according to Claim 1, wherein an input parameter is also used in deriving said control function.
Claim 3
Dependent Claim
21 words
The method according to claim 1 or 2 in which said factors include the ratio of output current to output voltage.
Claim 4
Dependent Claim
21 words
The method according to claim 1 or 2 in which said factors include the ratio of output voltage to output current.
Claim 5
Dependent Claim
29 words
The method according to claim 1 or 2 including the step of compensating for non-ideal circuit conditions with the aid of a control loop having a long time constant.
Claim 6
Dependent Claim
19 words
The method according to claim 2 in which said input parameter is the input voltage or the input current.
Claim 7
Dependent Claim
68 words
A power converter employing adaptive control, said power converter comprising: (1) an input circuit including means for sensing input current; (2) an output load supplying circuit including means for sensing output current; (3) an adaptive control circuit including means for controlling said input current, said adaptive control circuit being configured to be responsive to said output current; wherein said converter is provided with a substantially constant output characteristic.
Claim 8
Dependent Claim
39 words
A system according to claim 7 including a low frequency negative feedback control loop responsive to said output voltage and a reference voltage and coupled to said control circuit for compensating for drift, power loss and other non-ideal conditions.
Claim 9
Independent Claim
62 words
A method of regulating the output of a power converter comprising the steps of: (1) monitoring the output current parameter; (2) deriving a control function F by generating a control signal as a function of factors including the output current; (3) controlling the product of input current and input voltage as a function of a constant K and said control function F.
Claim 10
Dependent Claim
27 words
The method according to claim 9 including the step of compensating for non-ideal circuit conditions with the aid of a control loop having a long time constant.
Claim 11
Dependent Claim
69 words
A power converter employing adaptive control, said power converter comprising: (1) an input power supplying circuit including means for sensing input power; (2) an output load supplying circuit including means for sensing output current; (3) an adaptive control circuit including means for controlling said input power, said adaptive control circuit being configured to be responsive to said output current; wherein said converter is provided with substantially constant output characteristic.
Claim 12
Independent Claim
54 words
A method of regulating the output of a power converter comprising the steps of: (1) monitoring the output current; (2) deriving a control function F by generating a control signal as a function of said output current; (3) controlling the input current as a function of a constant K and said control function F.
References Cited (Backward Citations)
No citation records indexed.
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