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首页> 外文期刊>Electric power systems research >Balancing loads of rotating generators utilizing VSC direct power controllers in a ship AC/DC smartgrid
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Balancing loads of rotating generators utilizing VSC direct power controllers in a ship AC/DC smartgrid

机译：平衡载重发电机的负载，利用船舶AC / DC SmartGrid中的VSC直接电源控制器

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This paper considers the case of a ship AC/DC smartgrid configured in the docked mode, where a 1 MW diesel-generator is in operation to supply the AC-side of the grid in addition to a battery-bank connected to the DC-side, and a 0.5MVA Voltage Source Converter (VSC) for bridging the two sides of the grid. In this configuration, three-phase power imbalance can easily occur due to unpredictable per-phase consumer-loads, causing generator torque, power-angle and voltage oscillations that lead to increased fuel consumption and potentially to premature failure. To overcome such a condition, the paper proposes a control method for the VSC which implements three power-controllers for re-balancing the loads on the rotating-generator. Firstly, it presents a four-thorder power-model for the VSC microgrid-connection and the DC-link, including a diesel-generator's electromechanical model. Then the model is expanded to allow the design and implementation of the power-controllers based on an inverse-model technique. This process also includes the analysis and design of integrated DC-link voltage and frequency-droop controllers, and a synthetic-inertia provider. Finally, the paper demonstrates the performance of the complete VSC control system and its parts through a detailed system simulation of the microgrid, which covers performance tests and analysis, demonstrating the elimination of generator torque oscillation.
机译：本文考虑了在停靠模式下配置的船舶AC / DC SmartGrid的情况，其中1 MW柴油发电机在运行中，除了连接到DC侧的电池组外，还提供电网的交流侧以及用于桥接电网两侧的0.5MVA电压源转换器（VSC）。在这种配置中，由于不可预测的每相消费负载，可以容易地发生三相功率不平衡，导致导致发电机扭矩，电源角和电压振荡，从而导致燃料消耗增加，并且可能对早发生故障。为了克服这种情况，本文提出了一种用于VSC的控制方法，其实现三个功率控制器，用于重新平衡旋转发生器上的负载。首先，它为VSC微电网连接和DC-LINK提供了四个电力模型，包括柴油发电机的机电模型。然后扩展模型以允许基于逆模型技术的功率控制器的设计和实现。该过程还包括集成直流电压和频率下降控制器的分析和设计，以及合成惯例提供商。最后，本文通过微电网的详细系统仿真展示了完整的VSC控制系统及其部件的性能，涵盖了性能测试和分析，证明了消除发电机扭矩振荡。

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