Abstract This paper proposes a coordinated control scheme for proper and seamless power management of the study AC microgrid system including wind and diesel generation sources, where the generator at both wind and diesel generation sources is from the doubly-fed induction generator (DFIG) type. In this way, at first step, the wind energy source works in the power control mode and injects available wind power to load AC bus, and diesel generator provides AC voltage with constant magnitude and frequency. But, by using this control approach, the available wind power may go beyond the load power leading to overvoltage at local wind and diesel AC buses. Hence, the diesel generator, for creating the rated AC voltage, may absorb the extra wind power. Therefore, in order to address the issues of overvoltage and power return to the diesel unit, the control loops of the DFIGs in the wind and diesel generation sources are enhanced for proper and seamless power management, where the proposed approach is realized by using local AC bus voltages and without any communication facility. By using the proposed control method, the study system seamlessly tracks the load demand without any transient and switch from one control mode to another.

中文翻译：

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由风力和柴油发电机组和交流独立负载组成的交流微电网系统的协调和自适应电源管理

摘要 本文提出了一种协调控制方案，用于研究交流微电网系统的适当和无缝电源管理，包括风力和柴油发电机，其中风力发电机和柴油发电机均来自双馈感应发电机 (DFIG) 类型。这样，第一步，风能电源工作在功率控制模式，将可用的风能注入负载交流母线，柴油发电机提供恒定幅值和频率的交流电压。但是，通过使用这种控制方法，可用风力可能会超出负载功率，从而导致当地风电和柴油交流总线过压。因此，柴油发电机为了产生额定交流电压，可以吸收额外的风力。因此，为了解决柴油机过压和回电问题，风力和柴油发电机组中 DFIG 的控制回路得到增强，以实现适当和无缝的电源管理，其中所提出的方法是通过使用本地交流总线电压实现的，无需任何通信设施。通过使用所提出的控制方法，研究系统无缝地跟踪负载需求，没有任何瞬态，并从一种控制模式切换到另一种控制模式。