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Solar photovoltaic power generation maximum power point tracing control system and method

A maximum power point, solar photovoltaic technology, applied in photovoltaic power generation, control/regulation systems, regulating electrical variables, etc., can solve the problem of the steady-state performance and dynamic performance contradiction of fixed-step algorithm, achieve short tracking time, reduce system shock effect

Inactive Publication Date: 2017-09-15
刘博文
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of conflicting steady-state performance and dynamic performance of the fixed-step algorithm in the prior art, and to provide a solar photovoltaic power generation maximum power point tracking control system and method

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Embodiment Construction

[0018] The present invention provides a solar photovoltaic power generation maximum power point tracking control system and method. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] Such as figure 1 As shown, a solar photovoltaic power generation maximum power point tracking control system includes a PV array, a voltage conversion unit, a voltage sensor, a current sensor, an MPPT control module, a PWM converter, a grid-connected inverter and an AC grid, and the voltage conversion The unit includes capacitor C1, inductor L1, switch tube Q1, diode D1, and capacitor C2; both ends of capacitor C1 are connected to the positive and negative pole...

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Abstract

The invention relates to the technical field of solar cell maximum power point tracing control in a photovoltaic system, in particular to a solar photovoltaic power generation maximum power point tracing control system and method. The solar photovoltaic power generation maximum power point tracing control system comprises a PV array, a voltage conversion unit, a voltage sensor, a current sensor, an MPPT control module, a PWM converter, a grid-connected inverter and an alternating-current power grid. The invention further provides a solar photovoltaic power generation maximum power point tracing control method, the problem that the steady-state performance and the dynamic performance of a fixed step length algorithm are mutually contradictory is solved, system shock is reduced, and the tracing time is short.

Description

technical field [0001] The invention relates to the technical field of maximum power point tracking control of solar cells in a photovoltaic system, in particular to a system and method for maximum power point tracking control of solar photovoltaic power generation. Background technique [0002] The problem of energy supply and demand is becoming more and more serious. In order to improve the global environment, people pay more and more attention to the development and utilization of new energy, especially the utilization of renewable energy. Solar energy is a new type of green energy, and photovoltaic power generation is one of the main forms of utilizing solar energy. The output characteristics of photovoltaic cells have strong nonlinear characteristics. Its output power is not only related to the internal characteristics of photovoltaic cells, but also affected by external environmental conditions (light, temperature). The maximum power point tracking technology (Maximum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 刘博文罗洪珍
Owner 刘博文
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