MPPT photovoltaic inverter control system and control method thereof

A frequency converter control, photovoltaic technology, applied in photovoltaic power generation, photovoltaic modules, control using feedback, etc., can solve the problems of long time, poor tracking accuracy of maximum power, large actual deviation, etc.

Active Publication Date: 2014-04-30
SHENZHEN ENCOM ELECTRIC TECH
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Problems solved by technology

[0003] In the existing technology, the combination of photovoltaic energy utilization and inverter products is often rough, which fails to fully improve the efficiency of the whole system, and the utilization rate of solar panels is not high, and some directly use the constant voltage method to track system settings The voltage value of the maximum output power of the solar panel, this method is limited by the actual environment, as the light intensity and the temperature of the panel change, the voltage value of the maximum output power will

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  • MPPT photovoltaic inverter control system and control method thereof
  • MPPT photovoltaic inverter control system and control method thereof

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Embodiment Construction

[0020] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0021] The invention discloses an MPPT photovoltaic inverter control system, which combines figure 1 and figure 2 As shown, it includes:

[0022] A power inverter unit 2, which is connected to the solar battery panel 1, is used to invert the direct current output by the solar battery panel 1 into alternating current and then output it.

[0023] A switching power supply 11 is connected to the solar panel 1 for powering the control system.

[0024] A main processing unit 3, which is connected to the power inverter unit 2, is used for processing data and issuing control commands with the MPPT algorithm.

[0025] A real-time clock chip unit 4, which is connected to the main processing unit 3, is used to send time data to the main processing unit 3 and execute control instructions of the main processing unit 3 to adjust or calibrate the time.

[00...

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Abstract

The invention discloses an MPPT photovoltaic inverter control system. A power inverter unit is connected to a solar cell panel, a main processing unit is connected to the power inverter unit, and the main processing unit is used for processing data through an MPPT algorithm and giving out a control instruction. A real-time clock chip unit and a signal real-time detection unit are connected to the main processing unit. An X-axis motor driving unit is connected between the main processing unit and an X-axis motor and is used for executing the control instruction of the main processing unit to drive the X-axis motor to rotate. A Y-axis motor driving unit is connected between the main processing unit and a Y-axis motor and is used for executing the control instruction of the main processing unit to drive the Y-axis motor to rotate. Tracking to the maximum power to photovoltaic solar energy of the control system achieves the purposes of real time, comprehensiveness, quickness and stability, so that the real-time application efficiency of the solar cell panel is improved, and the advantages such as high efficiency and energy saving are achieved.

Description

technical field [0001] The present invention relates to a photovoltaic inverter, in particular to a maximum power point tracking (Maximum Power Point Tracking, MPPT) photovoltaic inverter control system and control method. Background technique [0002] With the increasingly tense energy situation, solar energy, as a clean and renewable energy source, has attracted more and more attention. Therefore, more and more photovoltaic products are designed and produced, and the main technical bottleneck of photovoltaic products lies in how to improve solar photovoltaic power generation. If the efficiency problem is not solved, the application cost of the product will become a key factor limiting its wide application. As an energy-saving motor speed control device, the frequency converter has significant technical advantages in the application of three-phase asynchronous motor as a load in the way of combining it with photovoltaic energy. [0003] In the existing technology, the comb...

Claims

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Application Information

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IPC IPC(8): H02S40/32G05D3/12
CPCY02E10/50
Inventor 李旭
Owner SHENZHEN ENCOM ELECTRIC TECH
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