Библиографическая ссылка на патент
Pat. 10056826 United States, Int. Cl.22 H02M 1/42, H02M 1/00, H02M 7/5387. Direct-current power supply device for controlling at frequency being 3N times frequency of three-phase alternating current and refrigeration-cycle applied device including the same : Appl. N 15/310136 : Filed 05.06.2014 : Pub. 21.08.2018 : / Kazunori Hatakeyama, Keisuke Uemura, Yosuke Shinomoto ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10056826/en?oq=US10056826.html (дата обращения: ДД.ММ.ГГГГ).