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Photovoltaics

Photovoltaics describes the direct conversion of light into electricity. Solar power contributes towards sparing the environment, reduces the effort required for the transport of electricity and ensures an independent and cost-effective energy supply.

Photovoltaics (basic knowledge)

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ET 250

Solar module measurements

Determining the characteristic parameters of a photovoltaic system

Learning objectives/experiments

physical behaviour of solar modules under a variety of effects
- illuminance
- temperature
- shading
familiarisation with key parameters
….

ET 252

Solar cell measurements

Investigation of the properties of solar cells; objective measurements by extensive temperature control of solar cells

Learning objectives/experiments

physical behaviour of solar cells under varying illuminance and temperature
recording of current-voltage curves
calculating current strength and achievable output based on the single diode model
how illuminance and temperature affect the curves
interconnecting solar cells in parallel and series connection
….

ET 250.02

Stand-alone operation of photovoltaic modules

Expansion module for ET 250 with components for independent use of electricity from solar modules

Learning objectives/experiments

familiarisation with practical components for stand-alone use of photovoltaic electricity
functioning of a DC switch-disconnector and over voltage protection
functioning of a charge regulator with integrated maximum power point tracking
influence of the workload on the efficiency of components
influence of fluctuations in solar energy and/or electricity usage on the overall system efficiency

ET 250.01

Photovoltaic in grid-connected operation

Expansion module for ET 250 with components for grid-connected usage of solar electricity

Learning objectives/experiments

familiarisation with components from grid-connected use of photovoltaic power
functioning of a DC switch-disconnector and over voltage protection
functioning of a grid-connected inverter with maximum power point tracking
dependence of the inverter efficiency on the workload
function of modern energy meters

ET 256

Cooling with solar electricity

Compression refrigeration system for operation with solar current from ET 250

Learning objectives/experiments

supply a compression refrigeration system with current from photovoltaic modules
components of a photovoltaic refrigerating plant
operation of the compressor with changing power available and cooling demand
charge and discharge cold accumulators
coefficient of performance of the refrigerating plant dependent on operating conditions
….

Photovoltaics

ET 250

Learning objectives/experiments

ET 252

Learning objectives/experiments

ET 250.02

Learning objectives/experiments

ET 250.01

Learning objectives/experiments

ET 256

Learning objectives/experiments

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