A control method for a variable step size mppt control system for solar power generation
A technology of control system and control method, applied in control/regulation system, photovoltaic power generation, regulating electrical variables, etc., can solve problems such as the inability to balance the steady-state performance and dynamic performance of the fixed-step algorithm, and the slow convergence speed of the variable-step algorithm. , to achieve the effect of smooth and rapid tracking process, good stability and accuracy
Active Publication Date: 2019-12-20
美世乐(广东)新能源科技有限公司
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[0003] The purpose of the present invention is to solve the problem that the steady-state performance and dynamic performance of the fixed-step algorithm in the prior art cannot be balanced, and the convergence speed of the traditional variable-step algorithm is slow, and a new type of variable-step-size MPPT control for solar power generation is provided. system and method
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[0017] The present invention provides a variable step length MPPT control system and method for solar power generation. In order to make the objectives, technical solutions, and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0018] Such as figure 1 As shown, a variable-step MPPT control system for solar power generation includes a PV array, a voltage conversion unit, a voltage detection device, a current detection device, a DSP-based MPPT control module, a display module, a PWM control module and a load. The voltage The conversion unit includes a capacitor C1, an inductor L1, a switch tube Q1, a diode D1, and a capacitor C2; both ends of the capacitor C1 are connected to the positive and negative poles ...
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The invention relates to the technical field of solar battery maximum power point tracking control in a photovoltaic system, in particular to a variable-step-size MPPT control system and method for solar power generation. The control system comprises a PV array, a voltage conversion unit, a voltage detection device, a current detection device, an MPPT control module based on a DSP, a display module, a PWM control module and a load. The invention further provides a variable-step-size MPPT control method. The maximum power point can be tracked within a short period of time, the method has high stability and precision, and the tracking process is stable and rapid.
Description
Technical field [0001] The invention relates to the technical field of solar cell maximum power point tracking control in a photovoltaic system, and in particular to a variable step length MPPT control system and method for solar power generation. Background technique [0002] The problem of energy supply and demand is getting more and more serious. In order to improve the global environment, people are paying more and more attention to the development and utilization of new energy, especially the utilization of renewable energy. As a new type of green energy, solar energy can solve the energy crisis caused by the depletion of conventional energy sources and has attracted widespread attention at home and abroad. And photovoltaic power generation is currently one of the main forms of using solar energy. The maximum power point tracking technology can effectively improve the energy conversion efficiency of the photovoltaic system. The open-circuit voltage coefficient method and t...
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IPC IPC(8): G05F1/67H02S40/30
CPCG05F1/67H02S40/30Y02E10/56
Inventor 李勇臣吴长华
Owner 美世乐(广东)新能源科技有限公司