Photovoltaics - Solar Line
Photovoltaics - Solar Line
Content
- Technological fundamentals of solar cells
- Correctly installing photovoltaic modules
- Investigation and simulation of systems
- Solar cooling
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Besides photovoltaics equipment, our Solar Line also includes a product programme for » solar thermal energy. |
Technological fundamentals of solar cells
ET 252 Solar cell measurements
The ET 252 trainer enables the fundamental relationships of photovoltaics in carefully thought out experiments.
- adjustable lighting unit
- 4 monocrystalline silicon solar cells: selectable types of connection via patch panel
- regulated Peltier cooling element for temperature control of the solar cells
- recording of current-voltage characteristics
Patch panel
- front and back contacts routed out for each solar cell
- integration of bypass diodes
Peltier cooling element
- precise temperature control with selectable set temperature
- heating up to max. 60°C
GUNT software
- data acquisition, display of operating status and tutorial feature
- manual or automated measurement of current-voltage curves
Correctly installing photovoltaic modules
ET 250 Photovoltaic modules measurements
With the ET 250 trainer, all key aspects in the operation of photovoltaic modules can be practically demonstrated.
- two modules, connected either in series or in parallel
- tilt angle of the modules individually adjustable
- measuring unit for displaying relevant measured values
» About the product
For laboratory experiments under uniform light conditions, we recommend our » artificial light source HL 313.01.
ET 250.01 Photovoltaic in grid-connected operation
ET 250.01 as an extension module for ET 250 contains practical components from the field of photovoltaics, which are needed to use the solar electricity when connected to a public grid.
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photovoltaic modules from ET 250 |
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circuit breaker and overvoltage protection |
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line-commutated inverter with maximum power point tracking |
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modern bidirectional electricity meter |
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electricity meter own consumption |
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halogen lamp with dimmer for experiments under varying electrical load |
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grid feed |
ET 250.02 Stand-alone operation of photovoltaic modules
ET 250.02 as an extension module allows to teach key aspects of solar electricity use in stand-alone systems.
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photovoltaic modules from ET 250 |
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circuit breaker and overvoltage protection |
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charge controller with maximum power point tracking |
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lead-acid gel accumulator, maintenance-free |
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simple inverter |
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electricity meter own consumption |
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halogen lamp with dimmer for experiments under varying electrical load |
Investigation and simulation of systems
Connected components of a modern solar electricity system with ET 255
To enable advanced experiments with current components from photovoltaic practice, GUNT offers a system consisting of coordinated experimental components.
- supply- and demand-controlled consumption with changing grid availability
- optimised self-consumption through storage utilisation with energy management system
- operation with real photovoltaic modules ET 255.02 or a photovoltaic simulator ET 255.01
- integration of two controllable electrical consumers ET 255.03
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ET 255.01 Photovoltaic simulator |
The ET 255.01 device is used to simulate the current and voltage characteristics of photovoltaic module
- programmable DC power supply unit with remote control
- time-controlled specification of generation profiles
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ET 255.02 Photovoltaic modules |
ET 255.02 is intended as a solar electricity source and contains four photovoltaic modules.
- mobile pivoting frame, adjustable angle of inclination
- measurement of illuminance and module temperature
ET 255 Operating options for modular solar electricity systems
The ET 255 trainer contains networked components of a solar electricity system such as an MPP charge controller, an accumulator, a grid inverter and a bidirectional electricity meter as well as an energy management system (EMS).
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circuit breaker and overvoltage protection |
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charge controller with module for power optimisation (MPP tracker) |
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LiFePO accumulator with battery management system |
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grid inverter for grid feed-in and stand-alone operation |
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bidirectional electricity meter with communication interface |
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grid connection |
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ET 255.03 Consumers in solar electricity systems |
ET 255.03 contains two controllable electrical consumers.
- two wire-wound tubular fixed resistors with different power consumption
- energy management systems for optimising self-consumption
- prioritisation of electrical consumers
- time-controlled specification of consumption profiles
Control and operation
- central communication and control unit (CCU)
- GUNT software used as HMI
- visualisation of measured values and storage
- specification of generation and consumption profiles with simulator ET 255.01 and consumers ET 255.03
- network capability: observe, acquire, analyse experiments at any number of workstations with GUNT software via the customer‘s own LAN/WLAN network
- alternatively, integrated touch screen for operation and display of measured values
Solar cooling
ET 256 Cooling with solar electricity
The ET 256 experimental unit contains a refrigeration chamber that is cooled by a typical compression refrigeration circuit. As a special feature, via a control unit, it is possible to supply the reciprocating compressor directly with electricity from the photovoltaic modules of ET 250 or ET 255.02. Alternatively, the unit can be supplied with power via the ET 256.01 Laboratory power supply unit.
- long cooling time due to cold accumulators and insulation
- control unit for temperature-controlled compressor operation
- network capable GUNT software for controlling and balancing energy flows
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