基于svm的三相逆变器柴油发电仿真器控制策略

M. Mahdavi, A. Ghasemi, G. Gharehpetian
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引用次数: 0

摘要

本文提出了一种基于逆变器的简易柴油发电机仿真器原型,用于实验室规模微电网的频率控制研究。利用带电压控制环的逆变器,利用改进的空间矢量调制(SVM)技术产生PWM开关脉冲,仿真了实际柴油发电机的工作特性。该控制系统由电压控制回路和频率控制回路两个分离的路径组成,分别为支持向量机生成参考电压的幅值和相位。电压控制路径在αβ帧中只包含一个PI控制器。在频率路径上,考虑原动机、调速器和同步机的传递函数,采用提出的传递函数和P-f下垂曲线生成支持向量机的参考频率。实现简单是这种方法的主要优点。在MATLAB/SIMULINK软件中对所提出的柴油发电机仿真器进行了仿真,验证了所提出方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SVM-based Control Strategy for Three-Phase Inverter-based Diesel Generator Emulator
In this paper an inverter-based prototype of a simple diesel generator emulator is presented for frequency control studies in laboratory-scale microgrids. The behavior of a real diesel generator is emulated by an inverter with voltage control loop using a modified space vector modulation (SVM) technique to generate the PWM switching pulses. The proposed control system consists of two separated paths including voltage and frequency control loops to generate amplitude and phase of the reference voltage for SVM, respectively. The voltage control path contains only one PI controller in αβ frame. Also in frequency path, a proposed transfer function and a P-f droop curve are used to generate the reference frequency for SVM considering transfer functions of prim-mover, governor and synchronous machine. The simplicity of implementation is the main advantage of this method. The proposed diesel generator emulator is simulated in MATLAB/SIMULINK software to verify the performance of the proposed method.
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