Description
Solar energy industry, as a new green energy industry, has shown its momentum of rapid development. In some areas, solar power generation has been able to compete with conventional energy generation. The traditional solar power generation technology is mainly for the solar panel to be fixed at a fixed angle on the ground, so that the conversion efficiency of solar panels is greatly reduced. We according to the solar trajectory control system, using PLC optical sensors and DC motor system to achieve the tracking of solar panels. The solar panel is always connected with the incident light of the sun at an angle of 90 degrees, so as to maximize the efficiency of the solar panel. In order to enable students to fully learn new technologies and understand the current cutting-edge development of new energy technology. Combined with the current solar energy development and the future development direction, our company has developed a new type of solar power generation equipment: Solar photovoltaic power generation training system
System composition
The Solar photovoltaic power generation training system is mainly divided into two parts: the control unit and the solar trajectory simulation unit.
The control unit comprises a PLC control system, the optical sensor tracking system, solar power system, data monitoring system and load system; solar trajectory simulation unit comprises a DC motor motion system, the solar power generation system.
Ø Control unit
1.PLC control system: mainly use SIEMENS SMART200 series controller, combined with the optical sensor, according to the law of the sun rises from the west, through the PLC sun tracking control two DC motor to achieve solar panels. And through logical control to achieve the normal operation of the whole device.
2.Optical sensor tracking system: the use of high-precision optical sensors. The accuracy is 0.1 degrees and the PE filter material is adopted.
3.DC motor control system using two DC motors to realize two axis synchronous operation through the SIEMENS SMART200 series PLC, to achieve the purpose of tracking solar panels
4.Solar power generation control system, including a photo-voltaic controller, a solar inverter, four batteries. The photo-voltaic controller mainly charges the battery energy from the solar panel conversion. The battery stores electrical energy, and then converts the direct current into 220V/50HZ alternating current through a DC inverter to supply power to the load.
The photovoltaic controller uses a photovoltaic controller with LCD. The controller has overcharge protection and over discharge protection, which can effectively guarantee the service life of the battery.
The battery is made of maintenance free lead acid battery 38AH X 4
5.Data monitoring system; uses high-precision digital display meter to monitor the voltage and current data of solar power generation and voltage and current data used for load.
6.Load system: AC load of this equipment is 220V, incandescent lamp and resistor. DC load is DC motor and small fan etc.
Ø Solar trajectory simulation unit
1.DC motor movement system: two DC motors are selected to adjust the elevation and azimuth angle of the solar panel synchronously. The connection between the DC motor and the turbine mechanism is realized by the chain wheel mechanism, and the 1:80 turbine reduction mechanism can effectively improve the control accuracy.
2.Solar power generation system: mainly for four 25W solar panels, can be connected in series and parallel to change the charging voltage, the solar energy conversion into electricity, and then through the solar controller to charge the battery.
3.The solar trajectory simulation system adopts the aluminum alloy frame structure and installs three.
