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:
Feb. 10, 2026
Filed:
Nov. 08, 2024
Santak Electronic (Shenzhen) Co., Ltd., Guangdong, CN;
Huahong Ning, Guangdong, CN;
Dan Liu, Guangdong, CN;
Yulong Hao, Guangdong, CN;
Lei Cao, Guangdong, CN;
Dawei Zheng, Guangdong, CN;
Santak Electronic (Shenzhen) Co., Ltd., Shenzhen, CN;
Abstract
The present invention provides a harmonic reduce control system for controlling an inverter, including a phase-locked loop controller, a voltage sum loop controller, a repetitive controller, a current loop controller, and a harmonic obtaining module. The harmonic obtaining module detects a harmonic value of a load current. The control system generates an inverter current reference value based on a first current value output by the voltage sum loop controller and the harmonic value, calculates a real-time frequency value based on a voltage of the power grid, obtains, through calculation, a repetitive controller output value based on the inverter current reference value, the inverter output current, and the real-time frequency value, and outputs a first duty cycle based on the repetitive controller output value. The control system limits the inverter output current based on the first duty cycle.