Simulation of Three-degree-of-freedom Internal Mode Sliding Mode Control for Non-ideal Single-inductor Dual-output Boost Converter

doi:10.16182/j.issn1004731x.joss.25-0517

Abstract

Abstract:

To reduce the cross-interference in the single-inductor dual-output (SIDO) Boost converter and to enhance the output accuracy and stability of the system, the parasitic resistances of the circuit components were considered, and a three-degree-of-freedom internal model sliding mode control strategy was proposed for the non-ideal SIDO Boost converter. An affine nonlinear mathematical model of the non-ideal SIDO Boost converter was established, and the nonlinear system was linearized and decoupled into two linear subsystems based on the differential geometry theory. The linear subsystem was designed as a three-degree-of-freedom internal model controller and a sliding mode controller, respectively. The robustness of the three-degree-of-freedom internal model control was analyzed, and the stability of the sliding mode control system was verified based on Lyapunov theory. The simulation results show that the proposed control strategy has better dynamic response, better control performance, and smaller cross-interference.

Key words: single-inductor dual-output (SIDO), Boost converter, exact feedback linearization, three-degree-of-freedom internal model control, sliding mode control

CLC Number:

TP391

Liu Bingli, Wu Jiarong, Yang Lin, Yan Dinglin. Simulation of Three-degree-of-freedom Internal Mode Sliding Mode Control for Non-ideal Single-inductor Dual-output Boost Converter[J]. Journal of System Simulation, 2025, 37(10): 2500-2510.

Figures/Tables 9

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Table 1

Simulation parameters of non-ideal SIDO Boost converter

变换器参数	数值	控制器参数	数值
V_in/V	10	R_L/Ω	0.31
$V C a, r e f$ /V	13	λ₁	2.99×10^-5
$V C b, r e f$ /V	18	λ₂	0.01
R_a/Ω	30	α₁	2.9×10^-5
R_b/Ω	30	α₂	1.9×10^-6
C_a/μF	470	$ξ 1$	0.1×10⁶
C_b/μF	470	$ξ 2$	6.2×10⁶
L/μH	330	k₁	8.68×10⁴
$R C a$ /Ω	0.21	f_s/kHz	50
$R C b$ /Ω	0.21

Table 1

Fig. 6

Fig. 7

Fig. 8

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