Diesel generator emulators (DGEs) are commonly used instead of real diesel generator units in laboratory-scale studies for their lower noise, more flexible parameters design and lower environmental pollution. This study presents a new control system in αβ framework for a DGE based on power electronic converter. The proposed control system has two parallel control paths including the frequency path and the voltage path. The voltage path consists of a PI controller that generates the amplitude of the modulation reference waveform. The frequency path consists of a transfer function in series with a droop curve to generate the angle of the modulation reference waveform. Finally, the angle and amplitude are applied to an especial space vector modulation unit for generation of the inverter gate pulses. The presented algorithm can be simply implemented in αβ framework with no need to PLL system and park transformation. It employs just one PI controller which can be easily implemented and tuned on the microcontroller. The experimental and simulation results verify the accuracy and performance of the proposed method.

在实验室规模的研究中，柴油发电机仿真器（DGE）通常代替实际的柴油发电机组使用，因为它们具有更低的噪声，更灵活的参数设计以及更低的环境污染。这项研究提出了一种新的αβ控制系统基于电力电子转换器的DGE的框架。所提出的控制系统具有两个并行控制路径，包括频率路径和电压路径。电压路径由PI控制器组成，该PI控制器生成调制参考波形的幅度。频率路径由与下垂曲线串联的传递函数组成，以生成调制参考波形的角度。最后，将角度和幅度施加到特定的空间矢量调制单元，以产生逆变器门脉冲。所提出的算法可以简单地在αβ框架中实现，而无需PLL系统和公园变换。它仅采用一个PI控制器，该控制器可以在微控制器上轻松实现和调整。