Advanced grid simulator for multi-megawatt power converter testing and certification

Koralewicz, Przemyslaw; Gevorgian, Vahan; Wallen, Robb; Merwe, Wim van der; Jörg, Pieder

doi:10.1109/ecce.2016.7854830

Cited by 27 publications

(61 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Transients are not considered. They contain high frequency components and they depend amongst others upon the impedance controller frequency response which is not in the scope of this paper [13].…”

Section: Verification Of the Grid Impedance Settingmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the grid parameters during under voltage ride through (UVRT) testing

Frehn

Grune²,

Röttgers³

et al. 2021

Forsch Ingenieurwes

View full text Add to dashboard Cite

Under-voltage ride through (UVRT) tests can be carried out on system test benches, most of them are equipped with a converter based grid simulator. This paper describes the control of the artificial grid impedance at the 4 MW test bench at CWD. Validation measurements with the commercial wind turbine E‑115 E2 show that the virtual impedance specification is sufficient to perform UVRT tests with different grid parameters. Comparative measurements between the voltage divider based FRT Container and the grid simulator with deliberately different grid parameters show a different behavior of the research wind turbine FVA nacelle. Therefore, it is recommended to perform UVRT tests on the test bench with predefined grid parameters.

show abstract

Section: Verification Of the Grid Impedance Settingmentioning

confidence: 99%

“…Since the steady-state PCC short-circuit power S Sc is calculated from the grid voltage V G and the grid impedance Z G at fundamental frequency according to Eq. 2, it can be affected by adding a virtual impedance [13].…”

Section: Influence Of Wind Turbine Reactive Current On Pcc Voltagementioning

confidence: 99%

Influence of the grid parameters during under voltage ride through (UVRT) testing

Frehn

Grune²,

Röttgers³

et al. 2021

Forsch Ingenieurwes

View full text Add to dashboard Cite

show abstract

“…In [21], an experimental validation of the rotor eigenfrequency emulation on a full scale test bench is demonstrated, in [22] for mechanical results on the dynamometer at the Fraunhofer IWES, and in [23] for electrical faults on the same test bench. Experimental results, with a focus on the grid emulator, of the wind turbine testing facility at NREL are given in [24], and practical recommendations regarding the PHiL interface derived from these results are given in [25].…”

Section: Introductionmentioning

confidence: 99%

Impact of Multi-Physics HiL Test Benches on Wind Turbine Certification

et al. 2022

View full text Add to dashboard Cite

Recently developed nacelle test benches for wind turbines, equipped with multi-physics Hardware-in-the-Loop (HiL) systems, enable advanced testing and even certification of next-generation wind turbines according to IEC61400-21. On the basis of three experiments carried out with a commercial 3.2 MW wind turbine, this paper shows to which extent test bench hardware and HiL systems influence certification results. For the crucial Fault-Ride-Through tests, all deviations were found to be below 1% compared to field and simulation results. For this test, the power HiL system and the accuracy of its impedance emulation are found to be of most relevance. The results for the test items Frequency Control and Synthetic Inertia were found to be more sensitive to shortcomings of the mechanical HiL with its control system. Based on these findings, the paper mentions general procedures to ensure the quality of test benches with HiL systems and, with that, ensure the quality of certification.

show abstract

“…Most converter topologies reported in the technical literature have been designed for AC grid emulation and do not have a sufficient power capability to test modern multimegawatt MV applications [5][6][7][8][9][10]. In the literature, there are two competitive solutions providing an appropriate level of voltage and power for modern MV applications [11,12]. Phase chokes are required to limit the currents circulating between the phases, as well as to reduce output current ripples.…”

Section: Introductionmentioning

confidence: 99%

Real Time Simulation of Power Electronics Medium Voltage DC-Grid Simulator

et al. 2021

View full text Add to dashboard Cite

Power electronics medium-voltage (MV) systems must comply with the requirements defined in grid codes. These systems’ compatibility with the standards can be validated by specialized testing equipment: grid simulators. This paper presents a hardware in the loop (HiL) implementation and the simulation results of a MV multiphase DC/DC converter designed for MV DC grid emulation. By using ABB’s reliable, patented power converter hardware topology (US 10978948 B2) and by applying advanced control algorithms, the presented system can be used for special purposes, such as the emulation of fault events in a DC-grid used for the certification of other devices, or for other research goals. The presented concept of a power electronics DC-grid simulator (PEGS-DC) is characterized by high power capability and high voltage quality. In this paper, the general idea of a power electronics grid simulator applied for the testing of MV electrical systems is discussed. Then, details related to the PEGS-DC, such as its hardware topology and the applied modulation method are presented. Subsequently, the HiL setup is described. The main scope of this article focuses on model the description and presenting recorded HiL simulations.

show abstract

Advanced grid simulator for multi-megawatt power converter testing and certification

Cited by 27 publications

References 7 publications

Influence of the grid parameters during under voltage ride through (UVRT) testing

Influence of the grid parameters during under voltage ride through (UVRT) testing

Impact of Multi-Physics HiL Test Benches on Wind Turbine Certification

Real Time Simulation of Power Electronics Medium Voltage DC-Grid Simulator

Contact Info

Product

Resources

About