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:
Jul. 18, 2023
Filed:
May. 13, 2022
Applicant:
Lg Electronics Inc., Seoul, KR;
Inventors:
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 8/00 (2006.01); H02P 5/50 (2016.01); H02P 21/22 (2016.01);
U.S. Cl.
CPC ...
H02P 5/50 (2013.01); H02P 21/22 (2016.02); H02P 2201/03 (2013.01); H02P 2209/01 (2013.01);
Abstract
A device for driving a plurality of motors, including an inverter connected to a DC terminal; a multi-phase motor connected to the inverter; and a single-phase motor serially connected to the multi-phase motor, wherein a number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at the same speed is smaller than the number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at different speeds. Accordingly, a plurality of motors can be simultaneously driven at different speeds, by using a single inverter.