A maximum power point tracking control method for medium voltage photovoltaic power generation system

A photovoltaic power generation system and maximum power point technology, applied in the field of power system, can solve the problem of difficult to achieve optimal control of the maximum power point, and achieve the effects of increasing the power generation, flexibility and capacity of the system

Active Publication Date: 2022-03-25
SHANDONG UNIV
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Problems solved by technology

[0006] An embodiment of the present invention provides a maximum power point tracking control method for a medium-voltage photovoltaic power generation system to solve the problem that it is difficult to achieve optimal control of the maximum power point in the prior art

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  • A maximum power point tracking control method for medium voltage photovoltaic power generation system
  • A maximum power point tracking control method for medium voltage photovoltaic power generation system
  • A maximum power point tracking control method for medium voltage photovoltaic power generation system

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Embodiment Construction

[0041] The following description and the accompanying drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another element without requiring or implying any actual relationship or order between these elements. In fact the first element can also be called the second element and vice versa. Furthermore, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a structure, means or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed elements, or also elements inherent in th...

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Abstract

The invention belongs to the field of power systems, and discloses a maximum power point tracking control method for a medium-voltage photovoltaic power generation system. The medium-voltage photovoltaic power generation system includes a photovoltaic array, a voltage regulating device, and a grid-connected interface circuit. The number of grid-connected interface circuits is two. The photovoltaic array is connected to the voltage regulating device, and the voltage regulating device is connected to the end of the first medium-voltage feeder through the first grid-connected interface circuit, and connected to the end of the second medium-voltage feeder through the second grid-connected interface circuit; the first grid-connected interface circuit controls the output to the second The active power of the first medium-voltage feeder, and the second grid-connected interface circuit control the DC bus voltage of each photovoltaic grid-connected module to be the rated voltage. The method of the present invention can realize the flexible distribution of the output power in the two feeders according to the voltage control at the end of the two feeders on the basis of the maximum capture of solar energy by the system, and can effectively Compensate the unbalanced three-phase current of the second grid-connected interface circuit.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a maximum power point tracking control method for a medium-voltage photovoltaic power generation system. Background technique [0002] Energy is the basis for sustainable economic and social development, and an indispensable power guarantee for human production and life. As issues such as energy security, ecological environment, and climate change become increasingly prominent, accelerating the development of new energy has become a common consensus and concerted action by the international community to promote energy transformation and development and respond to global climate change. As an important part of new energy, photovoltaic power generation is gradually developing from large-scale centralized grid-connected to distributed grid-connected. [0003] A large number of distributed power sources connected to the distribution network can bring a series of benefits such ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67H02M7/5387H02M3/00H02M5/458H02M1/088
CPCG05F1/67H02M7/5387H02M3/00H02M5/458H02M1/088Y02E10/56
Inventor 张承慧李立伟段彬商云龙
Owner SHANDONG UNIV
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