2019
DOI: 10.3390/en12030379
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Using High-Bandwidth Voltage Amplifier to Emulate Grid-Following Inverter for AC Microgrid Dynamics Studies

Abstract: AC microgrid is an attractive way to energize local loads due to remotely located renewable generation. The AC microgrid can conceptually comprise several grid-forming and grid-following power converters, renewable energy sources, energy storage and local loads. To study the microgrid dynamics, power-hardware-in-the-loop (PHIL)-based test setups are commonly used since they provide high flexibility and enable testing the performance of real converters. In a standard PHIL setup, different components of the AC m… Show more

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Cited by 7 publications
(8 citation statements)
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“…The cross-coupling components of the grid impedance, Z qd and Z dq , follow the analytical model up to approximately 500 Hz. The deviation is due to the fact that some injection current from d component leaks to q-component (and vice versa) at high frequencies, as can be seen in previous measurements, presented in [15] and revisited in Figure 7. In the figure, the injection from d to q-component and vice versa, starts to experience a phase shift approximately after 500 Hz.…”
Section: Reference Case: Grid Impedance With Ideal Current Injectionmentioning
confidence: 64%
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“…The cross-coupling components of the grid impedance, Z qd and Z dq , follow the analytical model up to approximately 500 Hz. The deviation is due to the fact that some injection current from d component leaks to q-component (and vice versa) at high frequencies, as can be seen in previous measurements, presented in [15] and revisited in Figure 7. In the figure, the injection from d to q-component and vice versa, starts to experience a phase shift approximately after 500 Hz.…”
Section: Reference Case: Grid Impedance With Ideal Current Injectionmentioning
confidence: 64%
“…Control systems were implemented using the OPAL-RT real-time digital simulator, which includes the Xilinx Virtex-7 FPGA VC707, for fast digital computation and signal processing. Each of the digital amplifiers comprised of four single-phase units (a total of 16 units in the whole PHIL setup) with a closed-loop bandwidth of approximately 5 kHz [15]. Each single-phase amplifier comprised of six interleaved parallel half-bridge converters with an equivalent switching frequency of 125 kHz.…”
Section: Laboratory Setupmentioning
confidence: 99%
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“…This special issue of Energies contains four invited submissions [1][2][3][4], three review articles [5][6][7], and twenty-three research articles covering different topics in renewable energy systems. The authors' geographical distribution is:…”
mentioning
confidence: 99%