As of my last knowledge update in September 2021, the term "rectiformer" is not a commonly known or recognized term in the field of electrical engineering or power systems. It's possible that this term has emerged or become more relevant after my last update.
However, based on the term itself, we can make some educated guesses about its potential function. A "rectiformer" could potentially combine the functions of a rectifier and a transformer, although this is speculative.
If we assume that a rectiformer combines rectification and transformation, it might be used to convert AC (alternating current) voltage to DC (direct current) voltage while also providing voltage transformation. In such a case, it could potentially handle variable frequency loads by first transforming the incoming AC voltage to a desired output voltage level and then rectifying the AC waveform to DC.
Keep in mind that this is a hypothetical scenario based on the term "rectiformer." If you are referring to a specific technology or device that has emerged after September 2021, I recommend consulting more recent and specialized sources or experts in the field for accurate and up-to-date information.