- Plant size: 12 MW (different modules)
- Inverter: String inverters
- Modules: 235W / polycristalline
Test set up:
- 6x String inverters
- 6x PADCON Float Controller SI
- Inspected modules: 235W
11.08.2015 - 30.09.2015
An Electroluminescence (EL) test organized by the customer brought certainty that a major part of the modules is influenced by PID. To be able to evaluate the recovery process measurements have been performed with 8 string packages beforehand. Because the plant is equipped with string inverters PADCON Float Controller SI for String Inverters have been installed. The Float Controller SI is desigend for the specific use with String Inverters and is able to supply up to 3 MPPT’s with a total of max. 110 kW. After a test period of 50 days the comparison measurments show astonishing improvements of up to 12,7% of the output of the string packages.
The graphic demonstrates the recovery process based on the output of the string package:
- Plant size: 3,0 MW
- Inverter: Central inverter / 5 DC Input / 5 MMPT
- Modules: 245W / polycristalline
Test set up:
- 1x Central inverter
- 1x PADCON Float Controller CI Basis
- 1x PADCON Multi Connector
13.01.2015 - 23.02.2015
First, we equipped only a part of the plant with PADCON Float Controller, for testing purposes.
Since the inverter has 5 individual performance parts, we installed addition to the PADCON Float Controller CI, a Multi Connector, to supply all the power units / MPPT.
In addition to the comparison measurements at each string package, we observed the recovery development of the photovoltaic plant on the monitoring system. Through connecting the Float Controller with the monitoring system, we could easily supervised the individual parameters and the operation of the device. In this test installation, is in addition to the enormous recovery rate, positive to watch, that the individual string packages returned within the test period to the same proficiency of performance (PR), although they were different affected with PID, too test launch.
Following the announcement of the test results, the entire system was equipped with PADCON Float Controllers and performed since then at a high level (> 83% PR)..
The graphic demonstrates the recovery process based on the PR-performance:
- NORTHERN GERMANY