Coordinated control method and device for photovoltaic optimizer and photovoltaic inverter
A photovoltaic inverter and coordinated control technology, which is applied in the monitoring of photovoltaic systems, photovoltaic modules, circuit devices, etc., can solve the problems of low overall conversion efficiency of photovoltaic grid-connected systems.
Active Publication Date: 2019-08-13
SUNGROW POWER SUPPLY CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the overall conversion efficiency of the photovoltaic grid-connected system is also relatively low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0042]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0043] The embodiment of the invention discloses a coordinated control method between a photovoltaic optimizer and a photovoltaic inverter, which is applied to figure 1 The photovoltaic grid-connected system shown is intended to improve the overall conversion efficiency of the photovoltaic grid-connected system. Specifically, see figure 2 , the coordinated control method includes:
[0044] Step S01: Determine the operating parameters of the photovoltaic grid...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
This application discloses a coordinated control method and device for a photovoltaic optimizer and a photovoltaic inverter, which is applied to a photovoltaic grid-connected system, and the photovoltaic grid-connected system includes N pieces of photovoltaic modules, N photovoltaic optimizers and 1 photovoltaic inverter Inverters, N≥1, wherein: each of the photovoltaic modules is independently connected to the input side of one photovoltaic optimizer, and the output side of the N photovoltaic optimizers is connected to the DC side of the photovoltaic inverter . The coordinated control method includes: determining the operating parameters of the photovoltaic grid-connected system, the size of which can reflect the overall conversion efficiency of the photovoltaic grid-connected system; judging whether the operating parameters are lower than a preset value; if so , adjusting the DC side voltage of the photovoltaic inverter until the operating parameter is not lower than the preset value. The application improves the overall conversion efficiency of the photovoltaic grid-connected system.
Description
technical field [0001] The invention relates to the technical field of photovoltaic power generation, and more specifically, to a coordinated control method and device for a photovoltaic optimizer and a photovoltaic inverter. Background technique [0002] figure 1 A photovoltaic grid-connected system is shown, including N (N≥1) photovoltaic modules 100, N photovoltaic optimizers 200 (photovoltaic optimizers 200, which can be a step-down topology or a bidirectional DC-DC conversion topology structure) and a photovoltaic inverter 300, wherein: each photovoltaic module 100 is independently connected to the input side of a photovoltaic optimizer 200, and the output side of each photovoltaic optimizer 200 is connected to the DC of the same photovoltaic inverter 300 side( figure 1 Only take N pieces of photovoltaic modules 100 to form a series of photovoltaic strings as an example). Each photovoltaic optimizer 200 is used to perform MPPT (Maximum Power Point Tracking, maximum p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/383H02J3/385H02J3/46H02S50/10H02J3/12H02J2300/26H02J2300/24H02J3/381Y02E10/56H02J3/38
Inventor 徐君庄加才顾亦磊
Owner SUNGROW POWER SUPPLY CO LTD