A decoupled and adaptive power sharing strategy based on droop method for parallel inverters

You, Zhiyuan; Liu, Jinjun; Zhang, Xuan; Wang, Xinyu

doi:10.1109/apec.2014.6803452

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…However, if the line impedances are not equal, reactive power sharing problem occurs. Figure 2 shows an equivalent circuit for two parallel-operated DGs [19]. If the circuit is numerically examined on the d-q rotational coordinate, the V-Q droop control can be expressed by Equation (3):…”

Section: Reactive Power Sharingmentioning

confidence: 99%

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A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids

et al. 2017

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This paper proposes a new reactive-power sharing scheme to reduce the circulating current when two inverter-based distributed generations (DGs) operate in parallel through unequal line impedances in an islanded microgrid. If the terminal voltages of the two DGs are not equal due to the unequal line impedances, a circulating current due to reactive-power unbalance occurs, which increases system loss. The proposed droop control compensates the terminal voltage difference to reduce the circulating current by considering a feed-forward path of the line voltage drop. The feasibility of the proposed droop control was first verified through computer simulations, and then experiments with a hardware set-up in the lab. The experimental results were compared with the simulation results to confirm the feasibility of the proposed droop control.

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Section: Reactive Power Sharingmentioning

confidence: 99%

“…This equation can be rearranged as the following equation by defining the relationship of equation: The closed-loop transfer function for the current control is represented by the following equation: (19) This equation can be rearranged as the following equation by defining the relationship of equation:…”

Section: Voltage Control Designmentioning

confidence: 99%