Drone Electroluminescene (EL) Testing

Electroluminescence (EL) imaging is a photovoltaic (PV) module characterization technique, which provides high accuracy in detecting defects and faults, such as cracks, broken cells interconnections, shunts, among many others; furthermore, the EL technique is used extensively due to a high level of detail and direct relationship to injected carrier density

Embodiments

During measurement After measurement
FOCUS FREEZE
POINT MAP
FIND SWITCH
ALIGN
SCAN
Embodiments

Drone Inspection Capabilities On PV

Visual Photo

drone1

To detect front surface defect such as glass breakage, encapsulate polymer yellowing, frame losing, soiling, etc.

Thermography

drone2

To detect hotspots caused by external factors (shading, soiling) and a few of internal factors (bypass diode failure, suspected cell defect).

Electroluminescene (EL)

drone3

To detect hotspots caused by external factors (shading, soiling) and a few of internal factors (bypass diode failure, suspected cell defect).

Sequence Of Drone EL Lifecycle

Step

01

Design

Drone LiDAR is used to generate point cloud 3D model of the site as an input for solar potential analysis and accurate PV system design.

Lifecycle1

Step

02

Build

Monitoring actual site work progress and verify with the original design based on exceptional high-resolution drone visual 2D orthomosaic map.

Lifecycle2

Step

03

Commisioning

Monitoring actual site work progress and verify with the original design based on exceptional high-resolution drone visual 2D orthomosaic map.

Lifecycle3

Step

04

Operate

Drone thermography as a qualitative tool for detection of hotspot of PV modules to guide ground team for maintenance, i.e. cleaning pane.

Lifecycle4