The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Dec. 16, 2022
Zhongshan Broad-ocean Motor Co., Ltd., Zhongshan, CN;
ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD., Zhongshan, CN;
Abstract
A method for constant torque control of an EC motor of a ventilation system includes: defining a maximum speed spd_max_ref and a minimum speed spd_min_ref of an electronically commutated motor (ECM) within a constant-torque operation range; by using a proportional integral (PI) controller, calculating an upper reference torque T_ref_up with the maximum speed spd_max_ref as a first reference speed, and calculating a lower reference torque T_ref_low with the minimum speed spd_min_ref as a second reference speed; and T_ref_up>T_ref_low; receiving an externally input torque command Tcom; comparing the torque command Tcom, the upper reference torque T_ref_up, and the lower reference torque T_ref_low to determine a target torque Tact; and controlling the ECM to operate in a constant torque mode under the target torque Tact.