Abstract
This paper presents the power management scheme for a power electronics based low voltage microgrid in islanding operation. The proposed real and reactive power control is based on the virtual frequency and voltage (¿'-E') frame, which can effectively decouple the real and reactive power flows and improve the system transient and stability performance. Detailed analysis of the virtual frame operation range is presented, and a control algorithm to guarantee that the microgrid can be operated within the predetermined voltage and frequency variation limits is also proposed. Both simulation and experimental results are provided in this paper.
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