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  • 1
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    Modelling, analyses and design of switching converters (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A state-space averaging method for modelling switching dc-to-dc converters for both continuous and discontinuous conduction mode is developed. In each case the starting point is the unified state-space representation, and the end result is a complete linear circuit model, for each conduction mode, which correctly represents all essential features, namely, the input, output, and transfer properties (static dc as well as dynamic ac small-signal). While the method is generally applicable to any switching converter, it is extensively illustrated for the three common power stages (buck, boost, and buck-boost). The results for these converters are then easily tabulated owing to the fixed equivalent circuit topology of their canonical circuit model. The insights that emerge from the general state-space modelling approach lead to the design of new converter topologies through the study of generic properties of the cascade connection of basic buck and boost converters.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-CR-135174 , TRW-A72042-RHBE , TRW-D04803-CFCM
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    A general unified approach to modelling switching-converter power stages (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A method for modeling switching-converter power stages is developed, whose starting point is the unified state-space representation of the switched networks and whose end result is either a complete state-space description or its equivalent small-signal low-frequency linear circuit model. A new canonical circuit model is proposed, whose fixed topology contains all the essential input-output and control properties of any dc-to-dc switching converter, regardless of its detailed configuration, and by which different converters can be characterized in the form of a table conveniently stored in a computer data bank to provide a useful tool for computer aided design and optimization. The new canonical circuit model predicts that, in general, switching action introduces both zeros and poles into the duty ratio to output transfer function in addition to those from the effective filter network.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Power Electronics Specialists Conference; Jun 08, 1976 - Jun 10, 1976; Cleveland, OH
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A new optimum topology switching dc-to-dc converter (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A novel switching dc-to-dc converter is presented, which has the same general conversion property (increase or decrease of the input dc voltage) as does the conventional buck-boost converter, and which offers through its new optimum topology higher efficiency, lower output voltage ripple, reduced EMI, smaller size and weight, and excellent dynamic response. One of its most significant advantages is that both input and output current are not pulsating but are continuous (essentially dc with small superimposed switching current ripple), thus resulting in a close approximation to the ideal physically nonrealizable dc-to-dc transformer. The converter retains the simplest possible structure with the minimum number of components which, when interconnected in its optimum topology, yield the maximum performance.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Power Electronics Specialists Conference; Jun 14, 1977 - Jun 16, 1977; Palo Alto, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    A general unified approach to modelling switching dc-to-dc converters in discontinuous conduction mode (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A method for modelling switching converters in the discontinuous conduction mode is developed, whose starting point is the unified state-space representation, and whose end result is a complete linear circuit model which correctly represents all essential features, namely, the input, output, and transfer properties (static dc as well as dynamic ac small signal). While the method is generally applicable to any switching converter operating in the discontinuous conduction mode, it is extensively illustrated for the three common power stages (buck, boost, and buck-boost). The results for these converters are then easily tabulated owing to the fixed equivalent circuit topology of their canonical circuit model.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Power Electronics Specialists Conference; Jun 14, 1977 - Jun 16, 1977; Palo Alto, CA
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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