光伏储能系统及其适用的控制方法
By introducing parallel bypass switches and DC/DC converters into the photovoltaic energy storage system, combined with intelligent control of the controller, the high cost and high loss problems of the photovoltaic energy storage system are solved, and lower cost and higher efficiency of power transmission are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DELTA ELECTRONICS INC(CN)
- Filing Date
- 2021-03-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing photovoltaic energy storage systems suffer from high production costs and significant power loss, especially when the energy storage system is coupled with the photovoltaic power generation system, where the power needs to pass through multiple circuit stages, resulting in low efficiency.
A bypass switch and a DC/DC converter are connected in parallel in a DC/DC conversion device. The controller controls the conduction of the bypass switch and the operation of the DC/DC converter in different working modes, avoiding the need for electrical energy to pass through multiple circuit links. In particular, when the output voltage of the photovoltaic array is lower than the preset threshold value, the energy storage voltage is directly transmitted to the inverter through the bypass switch.
It reduces the production cost and power loss of photovoltaic energy storage systems, improves system efficiency, and optimizes the operating point of the photovoltaic array through maximum power point tracking control, thereby enhancing the overall performance of the system.
Smart Images
Figure CN115085245B_ABST