DYYG-8C Photovoltaic Power Generation Experimental Device
Release time：2024-07-04 13:00viewed：times
The tr*ning device adopts the series PWM charging control method, which reduces the voltage loss of the charging circuit by half compared with the original diode charging method, and the charging efficiency is 3-6% higher than that of non-PWM; the over-discharge recovery boost charging, normal direct charging, and floating charge automatic control methods are beneficial to improve the battery life. Multiple protection functions, including battery reverse connection, battery over- and under-voltage protection, solar cell module short-circuit protection, output over-current protection function with automatic recovery, and output short-circuit protection function.
I. M*n technical indicators and specifications:
1. Solar cell
◆ Peak power: 30W
◆ Maximum power voltage: 17.5V
◆ Maximum power current: 1.95A
◆ Open circuit voltage: 22V
◆ Short circuit current: 2.2A
◆ Installation size: 622*550*18mm
2. Solar controller
◆ Use single-chip microcomputer and special software to realize intelligent control and automatically identify 24V system.
◆ Adopting series PWM charging control mode, the voltage loss of the charging circuit is reduced by half compared with the original diode charging mode, and the charging efficiency is 3-6% higher than that of non-PWM; the boost charging of over-discharge recovery, normal direct charging, and floating charging automatic control mode are beneficial to improve the battery life.
◆ Multiple protection functions, including battery reverse connection, battery over- and under-voltage protection, solar cell module short-circuit protection, output over-current protection function with automatic recovery, and output short-circuit protection function.
◆ It has a variety of working modes, such as light control, light control + delay, general control and other modes.
◆ Floating charge temperature compensation function.
◆ Using digital LED display and settings, one-button operation can complete all settings, which is convenient and intuitive.
3. Battery (colloid or silicon energy)
◆ Low self-discharge rate
◆ Long service life
◆ Strong deep discharge capability
◆ High charging efficiency and wide operating temperature range
4. Off-grid inverter
◆ Pure sine wave output (distortion rate <4%)
◆ Input and output are completely isolated
◆ Capable of quickly starting capacitor and inductive loads
in parallel ◆ Three-color indicator light displays input voltage, output voltage, load level and fault conditions
◆ Load control fan cooling
◆ Overvoltage/undervoltage/short circuit/overload/overtemperature protection
5. Load
◆ DC loads include: LED lights, fans, etc.;
◆ AC loads include: energy-saving lamps and AC motors , etc.
6. Grid-connected inverter
The grid-connected inverter has a DC-DC and DC-AC two-stage energy conversion structure. The DC-DC conversion link adjusts the working point of the photovolt*c array to track the maximum power point; the DC-AC inverter link m*nly makes the output current in phase with the grid voltage and obt*ns a unity power factor at the same time.
7. Monitoring instrument
After completing the data reading of the experiment, the voltage and current of the solar cell group can be monitored; the voltage and current output by the grid-connected inverter; the voltage and current output by the off-grid inverter.
8. Virtual simulation software for electrical installation of buildings and intelligent buildings Based on the design of unity3d, users can choose different sizes of interactive interfaces according to the computer configuration, and can choose six levels of image quality. The model in the software can be rotated 360°, enlarged, reduced, and translated. There are assistant prompts during the use of the software, as follows: A. Wet alarm system 1. System overview: Overview of wet alarm system 2. Equipment recognition: It has the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 6 multiple-choice questions, with prompts for correct and wrong choices), schematics (you can enter the device from the schematics). Equipment includes: sprinkler, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pressure gauge, high-level water tank, Weiya control cabinet, pressure regulating tank, flow switch, terminal water test device, dr*nage facilities, water pump connector, hydraulic alarm, delay, wet alarm, butterfly valve, check valve, fire pump, safety pressure regulating valve, fire water pool. 3. Principle display: Display the working principle of the wet alarm system, 3D animation demonstration, 3D model is semi-transparent, and the internal water flow can be seen. Equipped with exercise module (4 built-in multiple-choice questions, both correct and wrong choices are prompted) 4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score are displayed after submission B. Gas fire extinguishing system 1. System overview: Overview of gas fire extinguishing system 2. Equipment cognition: It is equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (8 built-in multiple-choice questions, both correct and wrong choices are prompted), and schematic diagram (you can enter the equipment from the schematic diagram). Equipment includes: nozzle, HFC-227 storage bottle, bottle head valve, HFC-227 one-way valve, high-pressure hose, gas one-way valve, safety valve, weighing alarm, electromagnetic starter, selector valve, smoke alarm, fire alarm controller. 3. Principle demonstration: Demonstrate the working principle of the gas fire extinguishing system, 3D animation demonstration, 3D model is semi-transparent, and the internal gas can be seen. Equipped with practice module (built-in 3 multiple-choice questions, with prompts for correct and wrong choices)
4. Design and layout: There are 6 multiple-choice questions, each with a score. The correct answer and score will be displayed after submission.
C. Escape drill: Teaching is carried out in the form of fun games. Escape from the burning room within a limited time. Wrong choices will directly enter the score interface.
3. Experimental projects:
Experiment 1: Solar photovolt*c panel energy conversion experiment
Experiment 2: Environmental impact on photovolt*c conversion experiment
Experiment 3: Solar cell photovolt*c system direct load characteristics experiment
Experiment 4: Solar controller working principle experiment
Experiment 5: Reverse connection protection experiment
Experiment 6: Solar controller overcharge protection experiment for batteries
Experiment 7: Solar controller over-discharge protection experiment for batteries
Experiment 8: Nighttime anti-reverse charging experiment
Experiment 9: Off-grid inverter working principle experiment Experiment
10: Independent photovolt*c power generation experiment
Experiment 11: Grid-connected inverter working principle experiment
Experiment 12: Photovolt*c grid-connected experiment
Wechat scan code follow us
