Dynamic load compensation and stabilization in bilinear AC/DC rectifiers under unknown load conditions and disturbances

IF 5.4 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

Control Engineering Practice Pub Date : 2025-06-12 DOI:10.1016/j.conengprac.2025.106401

Gerardo Flores , Rodolfo Verdín , Youmin Zhang

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引用次数: 0

Abstract

Control of three-phase AC/DC converters faces significant challenges due to exogenous disturbances and dynamic resistive load variations, often leading to voltage instability. This paper addresses the control of such bilinear and underactuated systems by proposing a nonlinear Lyapunov-based adaptive controller that ensures output voltage regulation and near-unity power factor operation by enforcing sinusoidal input currents in phase with the source voltages. The approach guarantees almost global asymptotic stability while mitigating the effects of uncertainties and disturbances. The control design is carried out in the

d

q

rotating reference frame and integrates a Space Vector Pulse Width Modulation (SVPWM) strategy to allocate control actions to the converter switches. Additionally, a feedforward-enhanced PI (PI+FF) controller, a Sliding Mode Control (SMC) scheme, and a state-of-the-art nonlinear controller are implemented for comparison. A detailed qualitative and quantitative performance assessment is conducted. Simulation results in a Software-In-the-Loop (SIL) environment using a PSpice-based model validate the superior robustness and tracking capabilities of the proposed approach under realistic operating conditions with variable loads and external perturbations.

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未知负载和扰动下双线性AC/DC整流器的动态负载补偿与稳定

由于外源干扰和动态电阻性负载变化，三相AC/DC变换器的控制面临重大挑战，往往导致电压不稳定。本文通过提出一种基于李雅普诺夫的非线性自适应控制器来解决这种双线性和欠驱动系统的控制问题，该控制器通过强制与源电压相一致的正弦输入电流来确保输出电压调节和接近统一的功率因数运行。该方法保证了系统几乎全局渐近稳定，同时减轻了不确定性和扰动的影响。控制设计在d-q旋转参考系中进行，并集成了空间矢量脉宽调制（SVPWM）策略，将控制动作分配给转换器开关。此外，还实现了前馈增强PI （PI+FF）控制器、滑模控制（SMC）方案和最先进的非线性控制器进行比较。进行了详细的定性和定量绩效评估。在软件在环（SIL）环境中使用基于pspice的模型进行仿真，验证了该方法在具有可变负载和外部扰动的实际操作条件下的优越鲁棒性和跟踪能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Control Engineering Practice 工程技术-工程：电子与电气

CiteScore

9.20

自引率

12.20%

发文量

183

审稿时长

44 days

期刊介绍： Control Engineering Practice strives to meet the needs of industrial practitioners and industrially related academics and researchers. It publishes papers which illustrate the direct application of control theory and its supporting tools in all possible areas of automation. As a result, the journal only contains papers which can be considered to have made significant contributions to the application of advanced control techniques. It is normally expected that practical results should be included, but where simulation only studies are available, it is necessary to demonstrate that the simulation model is representative of a genuine application. Strictly theoretical papers will find a more appropriate home in Control Engineering Practice''s sister publication, Automatica. It is also expected that papers are innovative with respect to the state of the art and are sufficiently detailed for a reader to be able to duplicate the main results of the paper (supplementary material, including datasets, tables, code and any relevant interactive material can be made available and downloaded from the website). The benefits of the presented methods must be made very clear and the new techniques must be compared and contrasted with results obtained using existing methods. Moreover, a thorough analysis of failures that may happen in the design process and implementation can also be part of the paper. The scope of Control Engineering Practice matches the activities of IFAC. Papers demonstrating the contribution of automation and control in improving the performance, quality, productivity, sustainability, resource and energy efficiency, and the manageability of systems and processes for the benefit of mankind and are relevant to industrial practitioners are most welcome.