Also Available Domains Solar Power Generation|DC - DC Converters
The main objective of the proposed method is to improve the robustness and applicability of the system by using MPPT control strategy.
In this project, however the absence of optimal string maximum power point (MPP) tracking (MPPT) operation under power mismatch is a big issue in common centralized control. Further, the cost and time delay are unacceptable resulting from the distance among PV strings in the large-scale PV station and the cascaded DC-DC converter needs to adopt the distributed control method without real-time communication. To this end, by introducing other necessary constraints including voltage constraints, power constraints and gain constraints on the basis of the distributed MPPT control strategy, a distributed multimode control scheme is proposed in this paper. Each SM can be switched flexibly between multiple operation modes to maximize the extracted solar energy.
Index Terms—MVAC PV system; cascaded DC-DC converter; distributed control; multimode control.
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