Integrated PV inverter tester optimises power generation efficiency

Inverters are devices that convert DC power to AC power and are indispensable for the PV power generation industry.

Some of the inverters currently on the market suffer from substandard performance; they perform poorly in basic electrical characterisation tests and the performance of PV inverters can vary by as much as 5% or more, a difference that directly affects the power generation potential of the solar system. To address this issue, a rigorous and comprehensive testing programme is needed to ensure that the quality and performance of grid-connected inverters are up to standard and that they are capable of safe and stable long-term operation. This will help to meet energy demand and facilitate further development of the inverter industry.

In other words, conducting inverter efficiency and power quality testing can help us identify if there are performance issues with inverters, which in turn can play a key role in improving overall power generation. This method of testing is extremely effective in optimising efficiency and troubleshooting.

This requires the use of a specialised instrument, the PV Inverter Tester.

With multiple measurement channels, high accuracy, a wide frequency response range and multiple harmonic analyses, the device is able to adapt to small voltage variations and the need for broadband signal measurements at the megahertz level. It provides manufacturers with a highly efficient tool for evaluating product performance and conversion efficiency.

Product Benefits:

Network communication capability to perform remote synchronised test and control tasks.

Calculates the conversion efficiency of PV arrays in real time using cumulative power generation and cumulative irradiance measurements, quickly identifies potential faults in the PV system, and provides an effective means of troubleshooting. The equipment is designed for long-term on-site monitoring, with a high level of protection, suitable for power station field testing, and supports remote data monitoring and processing via Ethernet.