耦合电感型Zeta变换器的参数优化方法

doi:10.16180/j.cnki.issn1007-7820.2023.01.013

Abstract

Abstract:

An improved robust predictive control method is proposed for a class of multicellular descriptive LPV systems with bounded state disturbances, and an output feedback controller is designed to ensure the asymptotic stability of the systems. To offset the bounded state disturbance, the controller considered the undisturbed LPV system, and based on the off-line state observer, the LMI is used to solve the minimum-maximum optimization problem in the infinite time domain of predictive control. Then the off-line state observer is used to obtain the difference between the estimated values of the disturbed LPV system and the undisturbed LPV system, and the feedback gain of the guaranteed performance is determined, so as to obtain the optimal offset that makes the disturbed LPV system asymptotically stable, which is combined with the undisturbed system control law as the optimal control law and applied to the actual system. The experimental results show that the improved robust predictive control method can obtain better control performance, and improve the stability of the system and the efficiency of solving optimization problems. Simulation experiments also verify the effectiveness of the proposed algorithm.

Key words: Zeta converter, coupled-inductor, small-signal, frequency profile, zero-pole, PID controller, stability, rapidity

CLC Number:

TN73

XU Bangxian,LIU Xiaobo,HAN Xiangmin,QIU Zhi,TANG Hui,FAN Jinwei. Parameter Optimization Design Method of Coupled Inductor Zeta Converter[J].Electronic Science and Technology, 2023, 36(1): 88-94.

Figures/Tables 12

Figure 1.

Figure 2.

Figure 3.

Table 1.

Circuit parameters of coupled inductor Zeta converter"

参数	大小
输入电压U_in	150 V
额定输出电流I_o	10 A
预计输出电压U_o	255 V
静态占空比D	0.63
原边绕组内阻 $r L 1$	0.10 Ω
副边绕组内阻 $r L 2$	0.10 Ω
电容C₁内阻 $r C 1$	0.05 Ω
电容C₁	10 μF
电容C₂内阻 $r C 2$	0.05 Ω
电容C₂	47 μF
输入电感L₁	84 μH
输出电感L₂	100 μH
互感M	65 μH
耦合系数k_c	0.95
L₂/ L₁	1.2

Table 1.

Figure 4.

Figure 5.

Figure 6.

Table 2.

Optimized circuit parameters of coupled inductor Zeta converter"

参数	大小
输入电压U_in	150 V
额定输出电流	10 A
预计输出电压U_o	169.5 V
原边绕组内阻 $r L 1$	0.10 Ω
副边绕组内阻 $r L 2$	0.10 Ω
电容C₁内阻 $r C 1$	0.05 Ω
电容C₂内阻 $r C 2$	0.05 Ω
静态占空比D	0.63
输入电感L₁	100 μH
耦合系数k_c	0.95
L₂/ L₁	1
输出电感L₂	100 μH
互感M	95 μH
电容C₁	160 μF
电容C₂	100 μF

Table 2.

Table 3.

Figure 7.

Figure 8.

Figure 9.

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输出电流I_o/A	k_max
10	2.36
11	1.98
12	1.67
13	1.40
14	1.17
15	0.98
16	0.80
17	0.65
18	0.51
19	0.39
20	0.28
21	0.18
22	0.10
23	0.01
24	-0.06

Parameter Optimization Design Method of Coupled Inductor Zeta Converter

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References 18

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