Photovoltaic-storage DC-DC Coupled System and its Detection Method

CN115133872BActive Publication Date: 2025-10-31HUAWEI DIGITAL POWER TECH CO LTD
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Patent Information

Application Number
CN202110334028.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-29
Publication Date
2025-10-31
Estimated Expiration
2041-03-29

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Abstract

This application provides a photovoltaic-storage DC-DC coupling system, which includes m photovoltaic cell arrays, energy storage battery arrays, m switches, a control unit, m unidirectional DC / DC units, and one bidirectional DC / DC unit. The m switches, m photovoltaic cell arrays, and m unidirectional DC / DC units are each paired one-to-one. The control unit controls the on / off state of each of the m switches and controls the square wave duty cycle of the drive signal for the bidirectional DC / DC unit. The bidirectional DC / DC unit also outputs energy received from the energy storage battery arrays to the switches, and the on switches output energy received from the bidirectional DC / DC unit to the corresponding photovoltaic cell arrays. The technical solution of this application can reduce circuit costs, minimize losses, and reduce the impact on the power grid.
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