Inverter-Based Diesel Generator Emulator for the Study of Frequency Variations in a Laboratory-Scale Autonomous Power System
Inverter-Based Diesel Generator Emulator for the Study of Frequency Variations in a Laboratory-Scale Autonomous Power System
复制标题
基于逆变器的柴油发电机仿真器，用于研究实验室规模自主电力系统中的频率变化
DOI：
10.4236/epe.2013.53027
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
L. Lopes
中科院分区：
文献类型：
--
作者：
M. Torres;L. Lopes
本文介绍了一种基于逆变器的柴油发电机仿真器的建模、仿真和实际实现。该仿真器的主要目的是在实验室环境中，在一个真实的柴油发电机的操作是不可能的柴油为基础的自主电力系统的频率变化的研究。该仿真器基本上包括一个电压源逆变器与二阶输出滤波器的电压参考是由柴油发电机的模型。仿真器的控制基于数字信号处理器TMS320F2812，实时计算柴油发电机的数学模型和逆变器的控制。模型的参数从市售组件获得。实验结果表明，该仿真器在不同的转速下降值下，在瞬态和稳态响应方面都取得了令人满意的性能。对于稳态响应，测量的频率偏离理论值，平均绝对误差为：0%下垂为0.06 Hz，3%下垂为0.037 Hz，5%下垂为0.087 Hz。对于瞬态响应，测得的频率最低点与模拟值的偏差为：0%下降时为0.05 Hz，3%下降时为0.02 Hz，5%下降时为0.1 Hz。
This paper presents the modeling, simulation and practical implementation of an inverter-based diesel generator emulator. The main purpose of this emulator is for the study of frequency variations in diesel-based autonomous power systems in a laboratory environment where the operation of a real diesel generator is not possible. The emulator basically consists in a voltage source inverter with a second order output filter which voltage references are given by the model of the diesel generator. The control of the emulator is based on the digital signal processor TMS320F2812, where the mathematical models of the diesel generator and the control of the inverter are computed in real-time. Parameters for the model were obtained from commercially available components. Experimental results for different values of speed droop showed that the emulator achieves a satisfactory performance in the transient and stationary response. For the stationary response, the measured frequency deviates from theoretical values with a mean absolute error of: 0.06 Hz for 0% droop, 0.037 Hz for 3% droop, and 0.087 Hz for 5% droop. For the transient response, the measured frequency nadir deviates from simulations in: 0.05 Hz for 0% droop, 0.02 Hz for 3% droop, and 0.1 Hz for 5% droop.