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FAQ About Anti-backflow
Q: What is PV anti-backflow? A: In a PV system, when the generated power is greater than the user-side demand – meaning the load is unable to consume all the energy produced – the excess power flows to the grid. Since this current flows in the opposite direction to the conventional one, it is referred […]
Recommended Shutdown Procedure for Solar PV Systems
Properly shutting down a solar PV system is a common concern among users. Within the entire system, the AC side can be disconnected via the NFB (no-fuse breaker) on the AC distribution panel. The DC side can be disconnected either via the DC switch on the solar PV inverter or through the DC junction box, […]
AFCI: The Shield For PV Power Station Safety
As PV and energy storage systems are increasingly deployed in commercial and industrial sectors, as well as in homes and farms, they become more intertwined with daily life and production activities. While providing us with clean and convenient energy, it is crucial to ensure the safety of people and property, and to promote the healthy […]
How to Troubleshoot and Prevent Inverter Abnormal Operation
When an inverter experiences abnormal operation (non-shutdown failure/shutdown failure), it can result in reduced power generation in distributed PV power plants. How can we troubleshoot and prevent these issues effectively? 1. Non-Showdown Failure: Reduced/Failed Cooling Results in Lower Power Output Operation of inverters with fans If you observe that a fan-cooled inverter has […]
FAQ About Inverter Oversizing
Q: What is oversizing? A: In a solar system, when the installed solar panel capacity is higher than the rated capacity of the inverter, we refer it as inverter oversizing. To understand solar system oversizing, we introduce the concept of PV/inverter ratio. This ratio is the relationship between the PV module rating (Pdc) and inverter […]