The heart of Active Array™ is the Active Tag, a small, low cost electronic RFID based electronic device which is integrated into each PV module (or retrofitted to older modules using a custom built junction box).
The Active Tag:
- Assigns an individual identification code to each module, used both for communication and asset tracking purposes
- Monitors the module performance
- Transmits the data to the Active Isolator
- Independently isolates the module in response to an abnormal fault and danger conditions
- Isolates the device when not “in service”
The intelligence and the management console of Active Array™ is the Active Isolator. The Active Isolator is a multi-channel device, able to manage multiple strings of Active Array™ modules.
Active Isolator
- Provides both a manual switch interface and software based intelligent switching to isolate individual strings on request or in response to fault conditions
- Measures performance of individual strings of Active Array™ modules allowing diagnosis of voltage drops or fault conditions
- Communicates with the Active Tags to manage safety and performance in response to fault conditions
- Communicates with Active Tags to retrieve and store performance and fault condition data
- Provides a wireless PC management interface for control and data analysis
Active Array™ is an RFID based technology created by TwentyNinety and covered by UK and International patents
RFID is a low cost and well proven technology used extensively for wireless energy monitoring. RFID is also used extensively in supply chain and logistics applications for low cost product tracking and audit.