Intelligent photovoltaic power adjustor and adjusting method

Abstract

The invention provides an intelligent photovoltaic power adjustor and an adjusting method. The intelligent photovoltaic power adjustor comprises a power module, a sampling module, a control module, a driving module, a communication module, a power module and the like; the input end of the power module is connected with the output end of a photovoltaic module; the sampling module is provided with a sampling circuit, and the output end of the sampling circuit is connected with the control module; the control module is provided with an MCU (Micro Control Unit) control circuit; the power module is provided with a switching tube, and the driving module is connected with the switching tube of the power module; and the communication module realizes bidirectional feedback of the control module and a background monitoring system. By adopting the intelligent photovoltaic power adjustor and the adjusting method, the maximum power of each module can be tracked, so that the power loss can be reduced; the power adjustor can substitute a junction box, and can also be connected to the rear end of a junction box; double bypass protection is realized, the hot spot effect is avoided through a bypass diode, and the normal operation of a whole set and even a power station is prevented from being influenced by the fault or invalidation of a single module through a bypass switch to reduce power generation loss.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation, and in particular relates to an intelligent photovoltaic power regulator and a regulating method thereof. Background technique [0002] In the traditional power station scheme, the photovoltaic modules pass through the confluence, the inverter, and finally connected to the box-type transformer for boosting, and the electric energy is sent to the booster station and merged into the grid. The MPPT function is integrated in the inverter, and the number of MPPT circuits in the inverter is small. , easily affected by various complex conditions on site, resulting in loss of power generation, for example, due to components mismatch, dust, shadow occlusion, component temperature rise or damage (hot spot effect), the actual power generation of the photovoltaic system is higher than the theoretical value 10%-25% lower, where the hot spot effect will even seriously affect the per...

AI Technical Summary

Problems solved by technology

[0002] In the traditional power station solution, the photovoltaic modules pass through the confluence, the inverter, and finally connected to the box-type transformer for boosting, and the electric energy is sent to the booster station and merged into the grid. The MPPT function is integrated in the inverter, and the number of MPPT circuits in the inverter is small. , easily affected by various complex conditions on site, resulting in loss of power generation, for example, due to mismatch of components, dust, shadow occlusion, temperature rise or damage of components (hot spot effect), etc., the actual power generation of the photovoltaic system is higher than the theoretical value 10%-25% lower, where the hot spot effect can even seriously affect the performance of components and their life

[0003] In addition, during the installation or trial operation of the power station, reverse connection components or power optimizers will cause damage and greatly reduce their service life. Without a communication module, when a component or power optimizer fails, it is necessary to troubleshoot each component or each power optimizer. The operation and maintenance workload is huge, and the operation of the entire string or even the entire power station needs to be stopped, greatly increased cost

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