公开(公告)号：US20190293312A1

公开(公告)日：2019-09-26

申请号：US15957597

申请日：2018-04-19

Applicant: Johnson Controls Technology Company

Inventor： Ryan E. Hill, JR. ,  Harold J. Dubensky ,  Sandeep K. Chodapaneedi ,  Lindsey C. Walker ,  Nivedita Nath ,  Keith L. Glatfelter ,  Bhushan D. Vichare ,  Gnanesh Suvvada ,  Siddappa R. Bidari ,  Justin M. Fantom ,  Deepak S. Kollabettu ,  William J. Skinner, JR. ,  David A. Shearer ,  David P. Gillmen

IPC: F24F11/32 ,  F24F11/74 ,  F24F11/88

Abstract: A heating, ventilation, and air conditioning system includes an air moving device configured to move air through the HVAC system, a first variable frequency drive (VFD) configured to drive the air moving device, and a second VFD configured to drive the air moving device, wherein the first VFD and the second VFD are configured receive control instructions and to selectively operate based on the control instructions.