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Pat. 11031895 United States, Int. Cl.22 H02P 25/18, F25B 49/02, H02M 7/5387, H02P 27/08, H02P 29/00. Motor drive system and air conditioner : Appl. N 16/604857 : Filed 07.07.2017 : Pub. 08.06.2021 : / Tomohiro Kutsuki, Keiichiro Shizu, Kazunori Hatakeyama, Takashi Yamakawa, Takayuki Kato ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11031895/en?oq=US11031895.html (дата обращения: ДД.ММ.ГГГГ).