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Active islanding detection methods are generally employed for grid-connected inverter-based distributed generation (DG). However, there might be mutual influences and power quality issues caused by the disturbance signal when multiple inverters are involved. To address those problems, this paper analyzes the potential failure mechanism of the f-Q (frequency-reactive power) drifting active method in...
This paper introduces the use of a STATCOM with Supercapacitor energy storage (SES) to aid frequency control in a weak power supply network. The control of the fast response energy storage is coordinated with the slow response generator to ensure power matching within the power system at all times. Simulation and Experimental results are presented to show the improved frequency control in the presence...
A random high frequency (HF) injection sensorless vector control is proposed for a low voltage high current permanent magnet (PM) motor. By spreading the frequency of the injected components in a random manor, audible frequencies due to the injection can also be spread over a wide range of frequencies, reducing the perception of the audible noise whilst achieving comparable position estimation to...
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