2016 Fiscal Year Final Research Report
Relationship of Fast- and Slow-Scale Instabilities in Switching Power Converters
| Project/Area Number |
26730134
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Soft computing
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| Research Institution | Okayama University of Science (2015-2016)
Fukuoka University (2014) |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 電力変換回路 / 安定性解析 / 離散写像 / 分岐現象 |
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| Outline of Final Research Achievements |
Power converter circuits often have multiple inputs in the controller. The multiple inputs cause high- and low-frequency oscillations. In many cases, circuits with multiple inputs have a high dimensional topology which makes the detailed analysis difficult. This research analyzed a simple interrupted electric circuit in order to understand essential characteristics of the fast- and slow-scale dynamics. It was clarified that local bifurcation, which appears in fast-scale dynamics, does not significantly affect the global behavior of the system while instabilities in the slow-scale dynamics strongly affect the system behavior. As an example of the application, the circuit behavior in a DC/AC inverter was analyzed and the circuit parameter optimization was demonstrated.
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| Free Research Field |
ソフトコンピューティング
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