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Photovoltaic power optimizer and control method and device thereof and photovoltaic power generation system

A power optimizer and power optimization technology, applied in photovoltaic power generation, output power conversion devices, circuit devices, etc., can solve problems such as power waste, and achieve the effect of avoiding power waste

Active Publication Date: 2018-01-09
HUAWEI DIGITAL POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a photovoltaic power optimizer and its control method, device, and photovoltaic power generation system, which can solve the problem of power waste when the photovoltaic power optimizer fails in the related art, and the technical solution is as follows:

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  • Photovoltaic power optimizer and control method and device thereof and photovoltaic power generation system
  • Photovoltaic power optimizer and control method and device thereof and photovoltaic power generation system

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Embodiment Construction

[0044] figure 1 It is a structural schematic diagram of a photovoltaic power generation system provided by an embodiment of the present invention, refer to figure 1 , the photovoltaic power generation system may include a plurality of battery packs 00 connected in series, and each battery pack 00 may include a photovoltaic cell assembly 01 and a photovoltaic power optimizer 02 connected to the photovoltaic cell assembly 01 . The plurality of battery packs 00 connected in series are connected to the input end of the inverter 03, and the output end of the inverter 03 is connected to the power supply network. When the photovoltaic power optimizer connected to a photovoltaic cell module fails, the power generated by the photovoltaic cell module may not be output, resulting in power waste.

[0045] In the related art, staff members regularly check the working status of each component in the photovoltaic power generation system, and when a faulty photovoltaic power optimizer is det...

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Abstract

The invention provides a photovoltaic power optimizer and a control method and device thereof and a photovoltaic power generation system. The photovoltaic power optimizer comprises a power optimization module, a bypass module and a control module. The bypass module is connected with the input end of the power optimization module, the output end of the power optimization module and the control module. The control module is connected with the power optimization module. The control module is used for controlling the bypass module to be conducted when the fault of the power optimization module isdetected so that the power optimization module having the fault is enabled to be bypassed, and a photovoltaic cell component is enabled to be directly connected in series with other cell packs of thephotovoltaic power generation system and accessed to the inverter. Then the power generated by the photovoltaic cell component can be effectively outputted so that waste of power caused by the fault of the power optimization module can be avoided.

Description

technical field [0001] The present application relates to the field of photovoltaic power generation, in particular to a photovoltaic power optimizer and its control method, device, and photovoltaic power generation system. Background technique [0002] The photovoltaic power optimizer is a device used in the photovoltaic power generation system to optimize the output power of photovoltaic cell components to ensure the maximum output power of the photovoltaic power generation system. [0003] In the related art, a photovoltaic power generation system generally includes a plurality of battery groups connected in series, and each battery group includes a photovoltaic (Photovoltaic, PV) battery assembly and a photovoltaic power optimizer connected to the photovoltaic battery assembly. The multiple battery packs connected in series are connected to the input end of the inverter, and the output end of the inverter is connected to the power supply network. Wherein, each photovolt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J2300/24H02J3/381H02J3/0012H02M3/1582H02J2300/26Y02E10/56H02M1/325H02M3/158H02M1/32
Inventor 阳峰刘承勇姜乘风
Owner HUAWEI DIGITAL POWER TECH CO LTD
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