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Spec Sheet Description
On-Grid / Off-Grid Photovoltaic-Wind Power Plant Trainer
Model PVWG-E/EV
Model PVWG/EV (computerized version)
This system enables experimental investigation on the conversion of solar energy into electricity exploiting the photovoltaic effect and of wind energy into electricity by means of a wind power generator. The equipment is manufactured using real components available on the market.
Description:
System configuration:
- Stand-alone (isolated from the grid) or
- Grid-connected
The system consists of:
- A) Silicon cell photovoltaic panel
A.1) Solar radiation sensor (PVWG/EV)
A.2) PV panel temperature sensor (PVWG/EV)
B) Horizontal axis wind power generator
B.1) Wind speed sensor (PVWG/EV)
C) Table top control panel for OFF-GRID operation including:
C.1) Charge regulator
C.2) DC electric load (lamp)
C.3) Electric instrumentation for detecting the energy flows in the circuit branches
C.4) PC data acquisition system (PVWG/EV)
D) Buffer battery
E) Table top control panel for ON-GRID operation including:
E.1) Grid-Tie Inverter
E.2) AC electric load
E.3) Electric instrumentation for detecting the energy flows in the circuit branches
E.4) PC data acquisition system (PVWG/EV)
Off-Grid Operation:
- In case there is no sunshine or wind blowing, all the energy consumed by the user (load) is taken from the battery
- In case there is sunshine and/or wind blowing but no load is connected, all the energy produced by the system charges the battery
- In case there are both sunshine and/or wind blowing and load, the energy produced by the system partially charges the battery and partially powers the load
- When the consumption is higher than the power available from the sun and the wind, the power surplus is given by the battery
On-Grid Operation:
- In case the user consumption is lower than the available energy from sun and/or wind, the excess power is fed to the grid
- On the contrary, when consumption is higher than the available energy, the additionally required energy is supplied by the grid
Training Program:
- Components of a combined no-grid / off-grid wind and solar system for electricity production
- Effect of solar radiation on the panel output voltage
- Effects of shading on a real solar installation
- Photovoltaic panel energy conversion efficiency
- Effect of the wind speed on the generator output voltage
- Wind generator energy conversion efficiency
- Battery charging system management
- Interconnection of solar/wind power energy to the public grid
- Operation and efficiency of a DC/AC inverter
- Connection to portable rheostat
- Connection to wind power generator indoor operation device
PC Data Acquisition
- All instruments and sensors, as described above, are connected in Modbus network. This network is connected to a PC
- A specific software (developed with LabView) is supplied to monitor the system parameters
- Displayed parameters:
- All DC / AC parameters
- Solar radiation incident on the photovoltaic panel
- Photovoltaic panel temperature
- Wind speed
- The software enables to:
- Calculate energy conversion efficiency
- Visualize the energy flows to and from the photovoltaic generator, wind turbine, buffer battery or grid and load