Solar energy sensing solutions
Measurement from PV strings and converter boards to leakage protection and central-inverter DC-link supervision.
Explore the application architecture, understand the critical measurement points and connect each function to the appropriate ADISENS sensor family.
From distributed PV generation to controlled grid injection
A photovoltaic plant combines many distributed DC sources with one or more power-conversion stages. String and combiner-box measurement provides visibility close to the PV field; DC/DC or MPPT stages regulate energy extraction; the central or string inverter converts DC energy to grid-compatible AC.
Because the architecture spans low-to-medium current PCB points, leakage-current protection and a high-energy DC-link, no single sensor family fits every measurement point. Selection must follow the electrical function and installation location.
Why measurement matters
- Energy yield: accurate feedback supports MPPT and converter optimisation.
- Protection: leakage and differential-current sensing helps detect abnormal conditions.
- DC-link regulation: isolated voltage feedback supports stable inverter operation.
- Diagnostics: distributed measurements improve system visibility and service analysis.
Measurement points from strings to grid
The sensor family changes with the measurement function: string current, board-level converter current, leakage-current protection or DC-link voltage.
String, converter-board, protection and inverter measurement points
PV strings / combiner
Measure string or aggregated DC current close to the PV source with compact isolated sensing.
DC/DC & MPPT
Board-level current feedback supports converter regulation where PCB space and integration density matter.
Protection
Leakage or differential-current monitoring supports transformerless and protection-oriented architectures.
Main inverter / DC-link
DC-link voltage feedback supports inverter regulation, protection and system diagnostics.
Solar measurement-point mapping
KHTB / KHTC
Compact isolated current sensing close to PV strings, combiner boxes and inverter input stages.
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EM / EMT / EMK
Board-level current measurement for compact DC/DC, MPPT and inverter-control electronics.
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MCT-C
Leakage and differential-current measurement for protection-oriented solar architectures.
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COSY-C
Main DC-link voltage feedback for converter regulation, protection and diagnostics.
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