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Validated Testing of Grid-Connected PV Inverters for LV Grids by Means of Controller-Hardware-in-the-Loop (CHIL) Setup
G. Lauss, Z. Miletic, C. Messner, F. Leimgruber, C. Seitl
Grid-Connected PV Inverter, Real-Time Simulation, Inverter Control, Hardware in the Loop, Inverter Safety Testing
Photovoltaic Modules and BoS Components
Subtopic: Inverters and Balance of System Components
Event: 36th European Photovoltaic Solar Energy Conference and Exhibition
Session: 4AV.2.36
1212 - 1216
ISBN: 3-936338-60-4
Paper DOI: 10.4229/EUPVSEC20192019-4AV.2.36
0,00 EUR
Document(s): paper


This work is discussing different electric setups for testing active components connected to the lowvoltage grid. Active components such as grid-connected PV inverters can be tested by means of hardware-only test setups implemented in physical hardware implementation in the laboratory. Alternatively, components such as these can also be described as real-time capable models which may run on a real-time computing machine. With this concept, also the peripheral hardware of the PV inverter can be emulated. Only the control board is existing as a hardware component which is subsequently connected to the real-time simulator via I/O ports carrying input and output signals. With the help of this controller hardware-in-the-loop simulation methodology, the testing of the inverter device is facilitated and results are compared to the hardware-only test setup for the purpose of validation. This work includes the explanation of the different test setups and explains different use cases in which CHIL setups and hardware only setups may be used for the purpose of validated investigations.