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Pat. 10998830 United States, Int. Cl.22 H02M 1/00, H02M 1/32, H02M 1/36, H02M 5/458, H02M 7/219, H02M 7/5387. Power conversion device and three-phase power conversion device : Appl. N 16/616021 : Filed 24.04.2018 : Pub. 04.05.2021 : / Mitsuhiro Kadota, Takae Shimada ; Assignee Hitachi Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10998830/en?oq=US10998830.html (дата обращения: ДД.ММ.ГГГГ).