How to make power supply redundant
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A few days ago, I heard from a friend that the power supply should be redundant. I have been thinking about how to implement redundancy. If there are two power supplies, how can they automatically switch over when they fail?
There are automatic switching types, but the on-site usage conditions must be considered!
Does power supply redundancy mean automatic power conversion? If you know, can you answer this?
personal understanding: As long as it is redundant, it should have uninterrupted power supply. Dual power automatic transfer switches are available everywhere, but the biggest problem is that the switching speed is slow and the power is cut off in the middle. Now there should be hot redundant power supplies.
Redundancy is the term for UPS. . I've never heard of an electrical power supply called that. .
To answer your question, first figure out who you are applying to: 1. If it is a general process control system, the usual approach is to use two power supplies. ； The two controllers share a set of I/O, thus enabling online hot backup. ； 2. If it is a large industrial system, the control system also uses two power supplies, and the switching of the power supply is achieved through a dedicated power supply monitoring system. 3. For small systems powered by UPS, dual power supplies are not required. ； In the event of a mains power failure, the system will automatically switch to backup battery power supply.
Dual incoming lines and 100% hot backup can be used to ensure power reliability. There is also an automatic power switching device. Once one channel is powered off, the other channel will be switched on within a few tenths of a second without any impact on production.