2014 Fiscal Year Final Research Report
Single- or double-switch voltage equalizers with multiple low ripple-current outputs for partially-shaded photovoltaic modules
| Project/Area Number |
25820118
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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 |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Ibaraki University (2014)
Japan Aerospace Exploration Agency (2013) |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 太陽電池 / 部分影 / 昇降圧コンバータ / 共振形倍電圧整流回路 / 統合型コンバータ |
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| Outline of Final Research Achievements |
Voltage equalizers for partial-shading compensation that can be composed of a few switches were developed for series-connected photovoltaic modules. Detailed operation analyses and experimental verifications were performed for two major topologies: multi-stacked buck-boost converters-based and resonant voltage multiplier-based voltage equalizers. The detailed operation analyses and experimental results revealed that both equalizers can effectively preclude negative impacts of partial shading and the efficacy of the developed voltage equalizers was demonstrated. Furthermore, the resonant voltage multiplier-based equalizer can be integrated with an ordinary PWM converter by sharing switches and a magnetic component, deriving a novel integrated converter. The integrated converter not only further reduces the circuit element count but also realizes the system-level simplification by integrating a PWM converter and voltage equalizer into a single unit.
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| Free Research Field |
パワーエレクトロニクス
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