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Pat. 9893670 United States, Int. Cl.22 H02M 5/42, F25B 49/02, H02M 3/24, H02M 7/44, H02M 7/521, H02M 7/68, H02P 6/04, H02P 6/18, H02P 21/24, H02P 27/08. Inverter control apparatus and air conditioner : Appl. N 15/473688 : Filed 30.03.2017 : Pub. 13.02.2018 : / Rei Kasahara, Dongsheng Li ; Assignee Hitachi Johnson Controls Air Conditioning Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9893670/en?oq=US9893670.html (дата обращения: ДД.ММ.ГГГГ).