Reducing noise for an amorphous superconducting distribution transformer by using micro-perforated panel absorber

This paper focuses on reducing the vibration noise of amorphous metal alloy core superconducting distribution transformers (AMSDTs) with a micro-perforated panel (MPP) absorber. An AMSDT model was used as the test object, and a single MPP, double MPPs, and different backed cavities filled with the air experimentally and compared when rated voltages were applied to the AMSDT model. Testing was also implemented with the application of different applied voltages to the AMSDT. The results validate the proposition that the MPP absorber effectively reduces the audible noise of the AMSDT.