عنوان
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Enhanced Virtual Synchronous Generator Control for Parallel Inverters in Microgrids
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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DC-AC power converters, distributed power generation, droop control, microgrids, power control
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چکیده
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Virtual synchronous generator (VSG) control is a promising communication-less control method in a microgrid for its inertia support feature. However, active power oscillation and improper transient active power sharing are observed when basic VSG control is applied. Moreover, the problem of reactive power sharing error, inherited from conventional droop control, should also be addressed to obtain desirable stable state performance. In this paper, an enhanced VSG control is proposed, with which oscillation damping and proper transient active power sharing are achieved by adjusting the virtual stator reactance based on state-space analyses. Furthermore, communication-less accurate reactive power sharing is achieved based on inversed voltage droop control feature (V–Q droop control) and common ac bus voltage estimation. Simulation and experimental results verify the improvement introduced by the proposed enhanced VSG control strategy.
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پژوهشگران
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توشیفومی ایسی (نفر چهارم)، حسن بیورانی (نفر سوم)، یوشی میورا (نفر دوم)، جیا لیو (نفر اول)
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