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:
Mar. 16, 2021
Filed:
Oct. 16, 2019
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Yong Jae Lee, Gyeonggi-do, KR;
Joo Young Park, Gyeonggi-do, KR;
Jae Ho Hwang, Daejeon, KR;
Mu Shin Kwak, Gyeonggi-do, KR;
Su Hyun Bae, Daegu, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
An apparatus for controlling an inverter driving a motor is provided. The apparatus includes a current controller that generates a voltage instruction for causing a current detection value, obtained by measuring a current provided from an inverter to a motor, to correspond to a current instruction for driving the motor. A voltage modulator generates a pulse width modulation signal for controlling on/off states of switching devices in the inverter at a predetermined switching frequency based on the voltage instruction. A frequency determiner determines the switching frequency based on driving information of the motor, determines a plurality of synchronization frequencies based on a speed of the motor, and randomly selects and determines one of the plurality of synchronization frequencies as the switching frequency.