Active Disturbance Rejection Control for Underactuated PWM Rectifier Based on Equivalent Input Disturbance Error Estimation

doi:10.16183/j.cnki.jsjtu.2023.508

Abstract

Abstract:

Aiming at the problem of abnormal operation of three-phase voltage-type pulse width modulation (PWM) rectifier caused by factors such as voltage transformation and external disturbances, a control strategy is proposed that integrates active disturbance rejection control (ADRC) with equivalent input disturbance (EID) error estimation and a new terminal fuzzy sliding mode current control. By analyzing the underactuated characteristics of the three-phase voltage-type PWM rectifier system, a novel dual-closed-loop controller is constructed. The inner current loop adopts a terminal fuzzy sliding mode control strategy based on EID error estimation, while the outer voltage loop employs an ADRC strategy based on EID error estimation. To enhance controller accuracy and optimize control performance, error estimation is applied to mitigate current chattering and negative sequence current issues inherent in sliding mode control. Furthermore, harmonic components in the voltage loop are effectively suppressed, improving the voltage response speed and ensuring the stable operation of the three-phase voltage-type PWM rectifier under disturbance conditions. Finally, the proposed control strategy is validated through simulation experiments, demonstrating its effectiveness and superiority.

Key words: three-phase voltage-type pulse width modulation (PWM) rectifier, underactuated, equivalent input disturbance (EID), terminal sliding control, active disturbance rejection control (ADRC), fuzzy control, dual-loop control

CLC Number:

TP273

HUANG Zixin, YU Chengsong, WANG Wei, LIN Mengying, XU Da. Active Disturbance Rejection Control for Underactuated PWM Rectifier Based on Equivalent Input Disturbance Error Estimation[J]. Journal of Shanghai Jiao Tong University, 2025, 59(8): 1203-1215.

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输入/输出	模糊规则
$\stackrel{·}{V}$	NB	NM	NS	ZO	PS	PM	PB
Δη_1,2	NB	NB	NM	ZO	PM	PB	PB

参数	取值
电网相电压峰值,U_N/V	80
交流电压频率,f_N/Hz	50
L/mH	3
C/nF	1
R/Ω	0.2
R_L/Ω	40
开关频率,f_s/kHz	10
u_r/V	200

方法	i_d, i_q稳态时间 (稳态运行)/s	i_d, i_q稳态时间 (电压突变)/s	功率因数	响应时间 (稳态运行)/s	响应时间 (电压突变)/s	电网 THD/%
ADRC	0.025	0.02	0.995	0.025	0.02	2.29
本文方法	0.01	0.01	0.999	0.015	0.01	0.44