根据powershell中的文件名将文件移动到新的位置

I have a folder (no sub-folders) full of thousands of files of differing formats (pdf,xls,jpeg, etc). The files don't have a common naming structure, with the only pattern relating them being that somewhere within the file name there are the letters PN immediately followed by a 6 digit number. The PNxxxxxx code may occur at any point in the file name either at the start, end, between spaces or other characters.I have a folder (no sub-folders) full of thousa