A high-efficiency solar photovoltaic power generation control system and method based on synchronous boost
A solar photovoltaic and power generation control technology, applied in photovoltaic power generation, single-network parallel feed arrangement, etc., can solve the problems of low energy efficiency of solar photovoltaic panels and low service life of solar photovoltaic panels, and achieve the expansion of output voltage range and overall High conversion efficiency and stable DC voltage
Active Publication Date: 2018-08-14
上海飞优彻能源科技有限公司
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[0007] my country's solar photovoltaic power generation is mainly based on large-scale photovoltaic power plants. The cost of centralized inverters is low and has great advantages. However, photovoltaic power plants in my country generally have the problem of low energy efficiency of solar photovoltaic panels. low lifespan problem
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[0070] The high-efficiency solar photovoltaic power generation control system and method based on synchronous boost according to the present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.
[0071] figure 1 The structure of the high-efficiency solar photovoltaic power generation control system based on synchronous boost described in the present invention is illustrated in an implementation manner. Such as figure 1 As shown, in this embodiment, k groups of solar photovoltaic panels PV 11 -PV kn , each group of solar photovoltaic panels includes n solar photovoltaic panels connected in series, which convert solar energy into electrical energy and transmit it to the grid through the synchronous boost-based high-efficiency solar photovoltaic power generation control system 1 of this embodiment; The high-efficiency solar photovoltaic power generation control system 1 based on synchronous boost of the...
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The invention discloses a synchronous-boost-based high-efficiency solar photovoltaic generating control system. The system comprises an inversion unit, k synchronous boost unit voltage conversion unit, a detection device, and a control unit. The control unit uses all detection devices to measure an alternating-current voltage us and an alternating-current current is. An output voltage UPVj is obtained. Calculation is carried out to obtain a PWM signal of the inversion unit and the inversion unit is controlled, so that a reactive power outputted by the control system and a direct-current voltage of the inversion unit level off. Calculation is carried out to obtain PWM signals of the k synchronous boost unit voltage conversion circuits and the k synchronous boost unit voltage conversion circuits are controlled synchronously, thereby realizing independent MPPT control of each of k groups of solar photovoltaic cell panels. And a problem of oscillation caused by non-coordinated control of parallel boosts can be solved and the input voltage range is widened. Correspondingly, the invention also discloses a synchronous-boost-based high-efficiency solar photovoltaic generating control method.
Description
technical field [0001] The invention relates to a photovoltaic power generation control system and method, in particular to a high-efficiency solar photovoltaic power generation control system and method. Background technique [0002] Energy is an important material basis for the survival and development of human beings, and it is also an important factor affecting national security. Traditional petrochemical energy belongs to non-renewable energy and is facing the danger of depletion. At the same time, the burning of fossil fuels has caused severe pollution to the atmosphere. [0003] In order to solve the major problem of energy supply, countries all over the world have accelerated the development of new energy sources. As a clean energy source, solar energy has the following characteristics: first, it is inexhaustible; second, it is easy to obtain and ubiquitous; third, it is clean and pollution-free. [0004] The development and utilization of solar energy is an effect...
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IPC IPC(8): H02J3/38
CPCY02E10/56
Inventor 刁慕檩
Owner 上海飞优彻能源科技有限公司