1、 Application scope of system training:
The "Solar Photovoltaic Grid connected Power Generation Teaching Experiment Platform" mainly provides research and training on solar power generation as the main topic for vocational schools, universities, graduate students, and enterprise technicians.
2、 Teaching and Research Training Projects:
2. 1. Photovoltaic energy conversion experiment
Experiment 1: Composition principle of photovoltaic array units.
Experiment 2: Principle of energy conversion combination of solar photovoltaic cells.
Experiment 3: Principle of Array Electronic Maximum Power Tracker.
Experiment 4: Array convergence and lightning protection grounding principle.
Experiment 5: Array structural components and anti-corrosion installation principles.
Experiment 6: Maximum power tracker and photovoltaic conversion efficiency improvement experiment.
Experiment 7: Experiment on the Effect of Light Waves on Photovoltaic Conversion Efficiency under Different Weather and Sunshine Intensity.
Experiment 8: Experimental study on the impact of solar orbit changes on photovoltaic energy conversion in different seasons.
Experiment 9: Experimental study on the effect of temperature changes in different seasons on photovoltaic energy conversion.
Experiment 10: Energy Conversion Experiment of Array Low, Medium, and High through Switch Combination.
Experiment 11: Experimental study on the effectiveness of the light sensor and wind speed sensor.
2. 2. Synchronous inverter power supply experiment
Experiment 1: Composition principle of inverter power supply unit.
Experiment 2: Experiment on Maximum Power Tracking Control Method for MPPT Inverter Power Supply.
Experiment 3: Experiment on the Conversion of Inverter Power Output and Photovoltaic Energy.
Experiment 4: Comparative experiment on the effective combination and separation control of MPPT and electronic tracker.
Experiment 5: Comparative experiment on waveform, harmonic content, and power factor of AC power output from inverter power supply under sunny, cloudy, and rainy days.
Experiment 6: When the power supply to the grid is interrupted when the inverter is connected, the inverter should stop supplying power to the grid within 2 seconds and issue a warning signal for anti islanding effect protection testing.
Experiment 7: Control experiment of DC input undervoltage of inverter power supply.
Experiment 8: Noise testing experiment at a distance of 1m from the horizontal position of the equipment when the input voltage is at the rated value and the load is fully loaded.
3、 Operating technical conditions: (single-phase output)
◆ Photovoltaic array output voltage 22VDC
◆ Grid connected output voltage 180-260VAC
The frequency range for grid connection is 47.8-51 2Hz
Efficiency 94.5%
Power factor>0 ninety-nine
◆ Maximum power tracking 10.8-28VDC
Working environment: Temperature -20 ℃ -50 ℃
Relative humidity<90% RH
◆ Protection functions: lightning protection, polarity reversal, short circuit, leakage, overheating, islanding effect, overload protection, power grid undervoltage Power grid over/under frequency protection, grounding fault protection, etc.
3. System unit composition
3.1 Photovoltaic Array Unit: Construct a platform or balcony of approximately 3 square meters outdoors, install brackets, and lay a photovoltaic array with a total peak power of 300W. If conditions permit, three different types of solar cells (monocrystalline silicon, polycrystalline silicon, amorphous silicon) can be used for experiments on photovoltaic arrays.
3.2 Inverter Control Unit: The system can achieve up to 3 different models and origins of grid connected inverters to operate simultaneously through the on and off of the switch unit according to the needs of the experiment. Equipped with a simultaneous grid connection channel, it can meet the needs of comparative experiments and various data collection.
3.3. Switch control unit: All leads of internal and external units of the system are connected to their respective jumper terminals through isolation switches. During the experiment, in the event of leakage, short circuit, overcurrent, or overheating, the switch will automatically disconnect the power supply to protect the safety of instruments and personnel.
3.4 Matrix Connection Unit: On the schematic wiring panel, the leads of the smallest unit are connected to their respective jumper terminals through isolation switches. According to the needs of the experiment, jumper wires can be freely combined to form different open circuit voltages 5-60VDC， A system with a peak power of 50-300W.
3.5. Display Unit: Square Array Voltage and Current. Reverse communication of voltage, current, frequency, power, and reactive power. Positive AC voltage, current, frequency. Equipment operating temperature, battery array temperature, laboratory temperature and humidity, experimental clock, reverse power metering, forward power metering.

4、 Equipment configuration list: