| Author: | Veerachary, Mummadi |
| Advisor: | Advisor |
| Date: | 2004
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| Publisher: | |
| Citation: | Aerospace
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| Series/Report no.: |
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| Item Type: | Article
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| Keywords: | signal flow graph; dc-dc converters; 2-cell cascade boost; steady-state models; TUTSIM simulator |
| Abstract: | Signal flow graph (SFG) nonlinear modeling approach is well known for modeling dc-dc converters. However, all possible SFGs of a given dc-dc converter system will not yield the generalized graph. A systematic procedure and guidelines for developing unified flow graph models of the dc-dc boost converters, from which complete behavior can be determined is presented. Usefulness of the proposed method is demonstrated through examples. As an illustration a 2-cell cascade boost and interleaved boost converter systems are taken as examples. Derivation of large, small-signal and steady-state models from generalized flow graph is also demonstrated. Large-signal model is developed and programmed in TUTSIM simulator. Large-signal, responses against supply and load disturbances are obtained. Experimental observations are provided to validate the proposed algorithm. |
