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Photovoltaic array control device and control method

A photovoltaic array and control device technology, applied in the direction of using feedback control, etc., can solve the problems of heavy weight and consumption of photovoltaic arrays

Inactive Publication Date: 2014-12-03
SHENZHEN KUNTENG SOFTWARE TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has great disadvantages: due to the continuous real-time tracking of the sun position, a certain amount of power will be consumed when rotating the solar photovoltaic panel. Since the current photovoltaic array includes a large number of photovoltaic cells, the weight of the photovoltaic array is often heavy, which often leads to On the contrary, the power consumption is greater than the energy added after tracking the sun position in real time

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  • Photovoltaic array control device and control method

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0017] see figure 1 , is a block diagram of the photovoltaic array control device 100 of the present invention. The photovoltaic array control device 100 is used for controlling the rotation of a photovoltaic array 200 including a plurality of photovoltaic panels 201 .

[0018] The photovoltaic array control device 100 includes a detection unit 10 , a rotation unit 20 , a tracking control unit 30 , a storage unit 40 and a processing unit 50 .

[0019] The detection unit 10 is used for real-time detection of solar environment parameters. Specifically, the detection unit 10 includes a solar orientation sensor, an inclination sensor, a light sensor, etc., and the collected solar environmental parameters include solar orientation data, photovoltaic array 200 inclination and wind speed etc.

[0020] The storage unit 40 stores system parameter configuratio...

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Abstract

A photovoltaic array control method comprises the following steps: obtaining sunlight environment parameters detected in real time and obtaining system parameter configuration and local history weather records in a storage unit; calculating newly-added solar energy output power according to the sun azimuth data in the sunlight environment parameters, dip angle of a photovoltaic array and average daily radiation quantity in the local history weather records, and calculating power needed to be consumed by the rotating the photovoltaic array according to the weight of the photovoltaic array in the system parameter configuration and wind speed of the sunlight environment parameters; comparing whether the newly-added solar energy output power is larger than the power needed to be consumed by the rotating the photovoltaic array; and if so, triggering a tracking control unit to control a rotation unit to rotate so as to drive the photovoltaic array to rotate and to enable photovoltaic cell panels of the photovoltaic array to keep perpendicular to the sunlight. The invention further provides a photovoltaic array control device. The photovoltaic array control device and method can guarantee the output power of the photovoltaic array to be larger than the consumed power.

Description

technical field [0001] The invention relates to a control device, in particular to a control device and a control method of a photovoltaic array. Background technique [0002] At present, photovoltaic cells for converting solar energy into electrical energy have been widely used in residential areas and the like. Usually, the current generated by one photovoltaic cell is not enough for general residential use, so several photovoltaic cells are connected together to form an array photovoltaic array. For a high-efficiency solar photovoltaic array power generation system, a day-tracking control device is essential. The low-cost sun tracking control device that can accurately track the sun position has always been one of the research hotspots. The current sun tracking control device is divided into single-axis tracking device and dual-axis tracking device according to the different sun tracking methods used. . Single-axis tracking devices are generally divided into horizontal...

Claims

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Application Information

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IPC IPC(8): G05D3/12
Inventor 尤小红
Owner SHENZHEN KUNTENG SOFTWARE TECH