{Design , Analysis , and Implementation of Solar Power Optimizer for DC Distribution System}
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| Title | {Design , Analysis , and Implementation of Solar Power Optimizer for DC Distribution System} |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Chen S-mingOrion, Member S, Liang T-juuPeter, Hu K-ren |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 28 |
| Pagination | 1764–1772 |
| Keywords | High step-up voltage gain, maximum power point, solar power optimizer (SPO), tracking (MPPT) |
| Abstract | This paper proposes a high step-up solar power op- timizer (SPO) that efficiently harvests maximum energy from a photovoltaic (PV) panel then outputs energy to a dc-microgrid. Its structure integrates coupled inductor and switched capacitor technologies to realize high step-up voltage gain. The leakage in- ductance energy of the coupled inductor can be recycled to re- duce voltage stress and power losses. A low voltage rating and low-conduction resistance switch improves system efficiency by employing the incremental conductancemethod for themaximum power point tracking (MPPT) algorithm. Because of its high track- ing accuracy, the method is widely used in the energy harvesting of PV systems. laboratory prototypes of the proposed SPO that have an input voltage range of 20 to 40 V and a maximum PV output power of 400 V/300Ware applied. The highest PV power conver- sion efficiency is 96.7{%}. The maximum MPPT accuracy is 99.9{%}, and the full load average MPPT accuracy is 97.8{%}. |
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