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Pat. 11050360 United States, Int. Cl.22 H02M 5/458, H02H 1/00, H02H 7/12, H02M 1/00, H02M 5/453, H02M 7/5387, H02P 27/08, H02M 1/32. Power conversion device : Appl. N 16/640828 : Filed 06.09.2017 : Pub. 29.06.2021 : / Yusuke Arao ; Assignee Hitachi Industrial Equipment Systems Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11050360/en?oq=US11050360.html (дата обращения: ДД.ММ.ГГГГ).