Single-phase unified power quality regulator based on active disturbance rejection control system

• Main Authors: CHENG XINGONG, SHI GUOXIAN, ZONG XIJU
• Format: Patent
• Language: Chinese; English
• Published: 08.02.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The present invention discloses a single-phase unified power quality regulator based on an active disturbance rejection control system. The single-phase unified power quality regulator comprises a parallel side and a series side. The parallel side is mainly responsible for suppressing the harmonics in load current such that the content of grid side current harmonics is little. The series side mainly ensures the stability of load voltage. The parallel side comprises an active disturbance rejection controller and comprises a tracking differentiator, an extended state observer and feedback control based on the extended state observer. Through using the active disturbance rejection control system, the harmonic control capability of a unified power quality regulator is improved greatly. 本发明公开了基于自抗扰控制系统的单相统电能质量调节器，包括：并联侧和串联侧，并联侧主要负责抑制负载电流中的谐波，使电网侧电流谐波含量少；串联侧主要确保负载电压的稳定；并联侧包括自抗扰控制器，包括跟踪微分器、扩张状态观测器和基于扩张状态观测器的反馈控制；本发明自抗扰控制系统的使用极大地提升了统电能质量调节器的谐波治理能力。