PWM整流负载下基于vsg的电源稳定性增强控制策略

IF 4.3 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Consumer Electronics Pub Date : 2025-01-20 DOI:10.1109/TCE.2025.3532104

Gaoxiang Li;Bowen Liu;Wenhao Song;Jining Chen;Xiao Liu

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引用次数: 0

摘要

在PWM整流负载下，基于虚拟同步发电机（VSG）的电源容易产生中频振荡。首先，基于阻抗法分析了基于vsg的电源的系统振荡机理和特性。由于PWM整流负载在中频范围内的负电阻和容性特性，容易与基于vsg的电源相互作用，导致阻抗共振。其次，为了提高基于vsg的电源在PWM整流负载下的稳定性，提出了电压差动前馈控制方法。此外，由于改进后的vsg电源中频阻抗幅值降低明显，更接近理想电压源，可以自动抑制不可控整流负载引起的中频谐波。最后，通过仿真和实验验证了所提出的控制方法和相应的理论分析。

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An Enhancing Stability Control Strategy of VSG-Based Power Source Under PWM Rectifier Load

Under PWM rectifier load, the power source based on virtual synchronous generator (VSG) is prone to cause mid-frequency oscillation. Firstly, the system oscillation mechanism and characteristic of the VSG-based power source are analyzed based on impedance method. Due to the negative resistance and capacitive characteristic in the middle frequency range, the PWM rectifier load is prone to interact with the VSG-based power source, which can lead to impedance resonance. Secondly, to improve the stability of the VSG-based power source under the PWM rectifier load, a voltage differentiation feedforward control is proposed. In addition, since the mid-frequency impedance magnitude decrease obviously, the improved VSG-based power source is closer to the ideal voltage source, which can automatically suppress the middle harmonics induced by uncontrollable rectifier load. Finally, the proposed control and the corresponding theoretical analysis are verified by simulations and experiments.

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来源期刊

IEEE Transactions on Consumer Electronics 工程技术-电信学

CiteScore

7.70

自引率

9.30%

发文量

审稿时长

3.3 months

期刊介绍： The main focus for the IEEE Transactions on Consumer Electronics is the engineering and research aspects of the theory, design, construction, manufacture or end use of mass market electronics, systems, software and services for consumers.