Photovoltaic array simulator teaching experimental device
A photovoltaic array and experimental device technology, applied in teaching models, instruments, educational appliances, etc., can solve the problems of high price, poor safety, high output voltage, and improve personal safety and equipment safety, safe and reliable operation cost , the effect of good dynamic characteristics
Pending Publication Date: 2019-06-28
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology
At present, the structure of photovoltaic array simulator is complex, expensive, and the output voltage is relatively high, and the safety is poor. It cannot meet the economical and safety requirements of colleges and universities for experimental teaching and experimental research, and cannot be widely promoted in actual teaching experiments and research and development.
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[0010] The present invention will be further described below in conjunction with accompanying drawing and example. like figure 1 Shown: photovoltaic array simulator teaching experiment device, including high-frequency inverter power tube 1, high-frequency transformer 2, non-phase-controlled rectifier bridge 3, LC filter 4, output voltage and current detection device 6, input voltage detection device 5, PWM drive circuit 8 and central control unit MCU7, wherein the high-frequency inverter power tube 1 is composed of two MOS power tubes with the same performance, and is the control object of the MCU central controller 7; the positive pole of the DC power supply 48VDC passes through the input voltage sensor 11 Connect the high-frequency inverter power tube 1, high-frequency transformer 2, non-phase-controlled rectifier bridge 3 and the input terminal of the LC filter 4 in sequence, and the output terminal of the LC filter 4 is used as the analog output of the photovoltaic array, ...
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The invention relates to a photovoltaic array simulator teaching experimental device. The output end of an LC filter is used as analog output of a photovoltaic array, and the output end of the LC filter is connected to the input end of a voltage and current detecting device through an output current sensor; the output end of the output voltage and current detecting device is connected to one ADC conversion interface of an MCU central controller; an input voltage sensor is connected to another ADC conversion interface of the MCU central controller through the output end of an input voltage detecting device. The photovoltaic array simulator teaching experimental device can simulate the power generating performance of the photovoltaic array under different operating conditions, and provides aplatform and a basis for teaching experimental research on optimal control of a photovoltaic power generating system and tracking and reliability analysis of MPPT. The photovoltaic array simulator teaching experimental device is low in operating cost, safe and reliable, not only has relatively high static accuracy, but also has good dynamic characteristics, control parameters thereof can be automatically adapted to change in the external environment, and the personal safety and the equipment safety during an experiment are also greatly improved.
Description
technical field [0001] The invention relates to photoelectric teaching experiment equipment, in particular to a photovoltaic array simulator teaching experiment device. Background technique [0002] The inverter is the core device of the photovoltaic power generation system, and the photovoltaic array as the input stage of the inverter is a component that converts light energy into DC power. Due to the strong nonlinearity of the current and voltage output by the photovoltaic array, the smart inverter must have a complex power maximum point tracking algorithm (MPPT) for different light intensities and environmental conditions. At present, the structure of photovoltaic array simulator is complex, expensive, and the output voltage is relatively high, and the safety is poor. It cannot meet the economical and safety requirements of colleges and universities for experimental teaching and experimental research, and cannot be widely promoted in actual teaching experiments and resear...
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IPC IPC(8): G09B23/18
Inventor程若发江晓舟
OwnerNANCHANG HANGKONG UNIVERSITY