Dual compensation strategy for real-time hybrid testing

With increasing changes in the contemporary energy system, it becomes essential to test the autonomous control strategies for distributed energy resources in a controlled environment to investigate power grid stability. Power hardware-in-the-loop (PHIL) concept is an efficient approach for such evaluations in which a virtually simulated power grid is interfaced to a real hardware device. This strongly coupled software-hardware system introduces obstacles that need attention for smooth operation of the laboratory setup to validate robust control algorithms for decentralized grids. This paper presents a novel methodology and its implementation to develop a test-bench for a real-time PHIL simulation of a typical power distribution grid to study the dynamic behavior of the real power components in connection with the simulated grid. The application of hybrid simulation in a single software environment is realized to model the power grid which obviates the need to simulate the complete grid with a lower discretized sample-time. As an outcome, an environment is established interconnecting the virtual model to the real-world devices. The inaccuracies linked to the power components are examined at length and consequently a suitable compensation strategy is devised to improve the performance of the hardware under test (HUT). Finally, the compensation strategy is also validated through a simulation scenario.

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Centrifuge and Real-Time Hybrid Testing of Tunneling beneath Piles and Piled Buildings

Journal of Geotechnical and Geoenvironmental Engineering ◽

10.1061/(asce)gt.1943-5606.0002003 ◽

2019 ◽

Vol 145 (3) ◽

pp. 04018110 ◽

Cited By ~ 9

Author(s):

Andrea Franza ◽

Alec M. Marshall

Keyword(s):

Real Time ◽

Hybrid Testing

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Real-Time Hybrid Testing Using a Fixed Iteration Implicit HHT Time Integration Method for a Reinforced Concrete Frame

Journal of the Earthquake Engineering Society of Korea ◽

10.5000/eesk.2011.15.5.011 ◽

2011 ◽

Vol 15 (5) ◽

pp. 11-24 ◽

Cited By ~ 1

Author(s):

Dae-Hung Kang ◽

Sung-Il Kim

Keyword(s):

Reinforced Concrete ◽

Real Time ◽

Integration Method ◽

Time Integration ◽

Reinforced Concrete Frame ◽

Hybrid Testing ◽

Concrete Frame ◽

Time Integration Method

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Passivity Control in Real-Time Hybrid Testing

2018 UKACC 12th International Conference on Control (CONTROL) ◽

10.1109/control.2018.8516814 ◽

2018 ◽

Cited By ~ 1

Author(s):

L. D. Hashan Peiris ◽

Andrew R. Plummer ◽

Jonathan L. Du Bois

Keyword(s):

Real Time ◽

Hybrid Testing

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Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

Experimental Techniques ◽

10.1007/s40799-020-00394-5 ◽

2020 ◽

Vol 44 (6) ◽

pp. 821-835

Author(s):

V. Ruffini ◽

C. Szczyglowski ◽

D. A. W. Barton ◽

M. Lowenberg ◽

S. A. Neild

Keyword(s):

Real Time ◽

Hybrid Testing ◽

Aerodynamic Loading

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The Effect of Interface Delays in Substructuring Experiments

Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B ◽

10.1115/detc2011-47948 ◽

2011 ◽

Author(s):

Maria Rosaria Marsico ◽

David J. Wagg ◽

Simon A. Neild

Keyword(s):

Real Time ◽

Physical Model ◽

Test Piece ◽

Full Scale ◽

Alternative Solution ◽

Hybrid Testing ◽

Physical Test ◽

Time Dynamic ◽

Control Techniques ◽

Dynamic Substructuring

Normally, for feasibility reasons, tests must be conducted on scaled structures, although scaling can introduce other issues. An alternative solution is to experimentally test the part of the structure that is of particular interest, at full or closer to full scale, while numerically modeling the remainder of the structure. This method is termed real-time dynamic substructuring or hybrid testing. To complete the substructure interaction the forces required to impose the displacements on the physical model are measured and applied to the model in real-time. One of the key challenges is to compensate for the dynamics associated with the actuators that are imposing the displacements on the physical test-piece. Ideally these actuators would act instantaneously however even with sophisticated control techniques interface errors are inevitable. We used an example system to study the effects of interface error modeled as a delay, on the accuracy of the overall substructuring technique.

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