三端口整流器面向脉冲负载频率突降控制策略

doi:10.7527/S1000-6893.2024.30424

Abstract

Abstract:

The three-port pulse power decoupling rectifier effectively eliminates the adverse impact of pulse power loads such as airborne radar on the power supply system by utilizing the control concept of power decoupling. The traditional voltage outer loop proportional integral control adopted is difficult to achieve the optimal dynamic control effects when the pulse frequency changes. To address the voltage fluctuation problem caused by power reverse transmission during sudden drop of pulse frequency， a Capacitive Energy Balance Control （CEBC） algorithm based on power redistribution is proposed from the perspective of power transmission of three-port rectifiers. The differences between sudden drops and sudden increases in pulse load frequency are pointed out. Unlike sudden frequency increases， it is necessary to reduce the output power of the AC source during sudden drops of frequency. Excessively low power not only affects the dynamic control effect， but also causes fluctuations of steady-state port voltage. Therefore， from the perspective of dynamic process power transmission， the specific implementation of CEBC is theoretically analyzed， and the voltage control effects of different power allocation results are compared through simulation. It is determined that the two-stage structure has the best dynamic control effect. Finally， the feasibility of the proposed solution is verified through experiments. Experimental results show that the CEBC method using two-stage power transmission can effectively reduce the system response time and improve the dynamic response capability.

Key words: three-port rectifier, pulse load, dynamic response, capacitor charge balance, energy balance control

CLC Number:

V242.2

Xinyu LUAN, Yu WANG, Zhangwu WU. Three-port rectifier for pulse load frequency sudden drop control strategy[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(24): 330424.

Figures/Tables 21

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Table 1

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参数	数值
L_abc/mH	2
C_abc/μF	2.2
L_f/mH	1.5
C_s/μF	330
C_o/μF	350
U_csmax/V	40
U_o/V	10
i_dcmax/A	2
i_dcmin/A	0.5
f_s/kHz	10

控制方法	调节参数	V_max/V	v_min/V	∆t/ms
PI调节	K_p=0.015 K_i=0.05	49	27.5	1 040
	K_p=0.015 K_i=0.2	49	22	1 200
	K_p=0.01 K_i=0.1	49.5	23.5	1 200
电流前馈PI调节	K_p=0.015 K_i=0.05	48	24	640
	K_p=0.015 K_i=0.2	48	22	1 040
	K_p=0.01 K_i=0.1	48	21	1 200
CEBC		48	27	160

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Three-port rectifier for pulse load frequency sudden drop control strategy

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