A Composite Strategy for Harmonic Compensation in Standalone Inverter Based on Linear Active Disturbance Rejection Control

This paper proposes a harmonic compensation control with disturbance rejection function for a standalone inverter. Due to the LC type three-phase three-leg inverter is connected to nonlinear loads, low-order harmonic components appears in the inverter output current. These harmonic current generate harmonic voltage drops when flowing through the filter inductor and the feeder impedance, which causes the output voltage of the inverter distorted. In order to compensate harmonics and produce sinusoidal voltage without additional compensation devices, virtual harmonic impedance method can be added to the fundamental voltage control. Due to the compensation effect of virtual harmonic impedance are very sensitive to the fluctuation of filter inductance. Therefore, inductance variation, as a disturbance in physical system, should be considered. In this paper, linear active disturbance rejection control (LADRC) is proposed in the fundamental voltage control loop to reduce the sensitivity of virtual harmonic impedance and decouple the model. Compared with traditional dual-loop PI control, the proposed strategy has faster dynamic response in control performance and fewer acquisition modules in engineering applications. The whole design process of virtual harmonic impedance and stability analyses of this strategy are provided. The simulation and experiment results show the good performance of the proposed strategy.

Download Full-text

An Active Disturbance Rejection Control-Based Voltage Control Strategy of Single-Phase Cascaded H-Bridge Rectifiers

IEEE Transactions on Industry Applications ◽

10.1109/tia.2020.3004316 ◽

2020 ◽

Vol 56 (5) ◽

pp. 5182-5193

Author(s):

Yulan Su ◽

Xinglai Ge ◽

Dong Xie ◽

Kexin Wang

Keyword(s):

Control Strategy ◽

Disturbance Rejection ◽

Single Phase ◽

Voltage Control ◽

Active Disturbance Rejection Control ◽

Voltage Control Strategy ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control

Download Full-text

Power factor correction and harmonic compensation in an active filter application through a discrete-time active disturbance rejection control approach

2015 American Control Conference (ACC) ◽

10.1109/acc.2015.7172170 ◽

2015 ◽

Cited By ~ 2

Author(s):

Horacio Coral-Enriquez ◽

G. A. Ramos ◽

John Cortes-Romero

Keyword(s):

Discrete Time ◽

Power Factor ◽

Disturbance Rejection ◽

Power Factor Correction ◽

Active Filter ◽

Active Disturbance Rejection Control ◽

Harmonic Compensation ◽

Control Approach ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control

Download Full-text

Voltage control of three phase inverters by using active disturbance rejection control

2015 30th International Power System Conference (PSC) ◽

10.1109/ipsc.2015.7827744 ◽

2015 ◽

Cited By ~ 1

Author(s):

Mahmoud Mehrabankhomartash ◽

Mohammad Reza Toulabi ◽

Ali Mohammad Ranjbar

Keyword(s):

Disturbance Rejection ◽

Voltage Control ◽

Active Disturbance Rejection Control ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control ◽

Three Phase

Download Full-text

A Novel Strategy Based on Linear Active Disturbance Rejection Control for Harmonic Detection and Compensation in Low Voltage AC Microgrid

Energies ◽

10.3390/en12203982 ◽

2019 ◽

Vol 12 (20) ◽

pp. 3982 ◽

Cited By ~ 1

Author(s):

Hui Li ◽

Shuang Li ◽

Junwei Lu ◽

Yue Qu ◽

Chenmu Guo

Keyword(s):

Disturbance Rejection ◽

Low Voltage ◽

Active Disturbance Rejection Control ◽

Harmonic Detection ◽

Nonlinear Loads ◽

Pass Filter ◽

Low Pass Filter ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control ◽

Ac Microgrid

In an AC microgrid, harmonic distortion is mainly caused by power electronic equipment and nonlinear loads. In this paper, linear active disturbance rejection control (LADRC) is used to control the fundamental current at the point of common coupling (PCC). Meanwhile, an active power filter (APF) is added to eliminate the harmonic current generated by the nonlinear loads. The tracking differentiator (TD) in active disturbance rejection control (ADRC) serves as a low-pass filter (LPF) in the harmonic detection algorithm of APF. Compared to traditional harmonic detection algorithms, the improved strategy solves the contradiction between rapidity, accuracy, and overshoot of filtering. LADRC has good performance of disturbance rejection, internal decoupling, and accessible parameters tuning. It can observe the internal uncertainty and external disturbance of the system as the total disturbance through the extended state observer (ESO), and compensate it in time through state feedback to make the system achieve the desired performance. The abilities of resonance suppression for LCL-type filter and internal decoupling of LADRC demonstrates its advantages through frequency domain analysis and simulation. The proposed strategy was simulated in MATLAB/SIMULINK and realized in the experimental hardware platform, and the effectiveness of the proposed strategy is approved.

Download Full-text