As of my last knowledge update in September 2021, the term "transformer core clamping" does not refer to a widely recognized concept in the field of transformers or electronics. Transformers are devices used to transfer electrical energy between two or more circuits through electromagnetic induction. The transformer's core is a crucial component that helps facilitate this energy transfer.
However, the term "clamping" might refer to a technique used in various electronic circuits to limit voltage spikes or fluctuations. In power electronics and circuit design, voltage clamping can refer to the practice of limiting the voltage across a device or circuit by redirecting excess voltage away from it. This is often achieved using clamping circuits like voltage clampers and voltage limiters.
If "transformer core clamping" has emerged as a concept after September 2021, I wouldn't have information about it. I recommend consulting more recent sources or technical documentation related to transformers and power electronics to gather the most accurate and up-to-date information on this topic.