scholarly journals First comparison of the electrical properties of two grid emulators for UVRT test against field measurement

2021 ◽  
Author(s):  
Anica Frehn ◽  
Soroush Azarian ◽  
Gesa Quistorf ◽  
Stephan Adloff ◽  
Fritz Santjer ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Field Measurement ◽  
Test Bench ◽  
Voltage Divider ◽  
System Level ◽  
Hardware In The Loop ◽  
Extra High Voltage ◽  
First Time ◽  
State Of Art ◽  
Technical Rules

AbstractThe technical rules for connecting turbines to the medium, high or extra-high voltage grid in Germany require the certification of the UVRT characteristics of wind turbines. The state-of-art voltage divider-based test equipment, also named UVRT-Container, is well equipped for executing UVRT tests in field. To conduct the UVRT in field the full wind turbine should be already installed. A second option to perform UVRT tests are system level test benches. They enable the testing of the nacelle. The components that are not actually present, such as the turbine tower or the blades, are emulated via a mechanical hardware in the loop (HiL) system. In this work, for the first time, the performance of two different grid simulators installed at the DyNaLab at Fraunhofer IWES and at the CWD at RWTH Aachen University is compared with a field measurement of the same type of wind turbine. Thus, not only a system test bench measurement is compared to a field measurement. Rather, two system test benches with individual technical approaches are additionally compared with each other. The focus of this work is to investigate the characteristics of the grid simulators within the steady-state range of the UVRT tests to replicate identical fault shapes on the test benches and in the field.

Multi-physics power hardware in the loop test bench for on-shore wind turbine nacelles

2013 ◽  
Author(s):  
Alexander Helmedag ◽  
Timo Isermann ◽  
Antonello Monti ◽  
Nurhan Rizqy Averous ◽  
Marco Stieneker ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Test Bench ◽  
Hardware In The Loop

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

2021 ◽  
Author(s):  
Anica Frehn ◽  
Rayk Grune ◽  
Heiko Röttgers ◽  
Antonello Monti
Keyword(s):  
Wind Turbine ◽  
Test Bench ◽  
Voltage Divider ◽  
Grid Impedance ◽  
Virtual Impedance

AbstractUnder-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.

scholarly journals Design and Analysis of a MPC-based Mechanical Hardware-in-the-Loop System for Full-Scale Wind Turbine System Test Benches

2017 ◽  
Vol 50 (1) ◽  
pp. 10985-10991 ◽  
Author(s):  
Christian Leisten ◽  
Uwe Jassmann ◽  
Johannes Balshüsemann ◽  
Mathias Hakenberg ◽  
Dirk Abel
Keyword(s):  
Wind Turbine ◽  
Full Scale ◽  
Loop System ◽  
Hardware In The Loop ◽  
Wind Turbine System

Towards Automated Evaluation of Vehicle Dynamics in System-Level Designs

2012 ◽  
Author(s):  
Zsolt Lattmann ◽  
Adam Nagel ◽  
Jason Scott ◽  
Kevin Smyth ◽  
Chris vanBuskirk ◽  
...  
Keyword(s):  
Design Space Exploration ◽  
Design Space ◽  
Test Bench ◽  
Simulation Models ◽  
Mobility Model ◽  
System Level ◽  
Bond Graphs ◽  
Automated Evaluation ◽  
Design Alternatives ◽  
Automatic Composition

We describe the use of the Cyber-Physical Modeling Language (CyPhyML) to support trade studies and integration activities in system-level vehicle designs. CyPhyML captures parameterized component behavior using acausal models (i.e. hybrid bond graphs and Modelica) to enable automatic composition and synthesis of simulation models for significant vehicle subsystems. Generated simulations allow us to compare performance between different design alternatives. System behavior and evaluation are specified independently from specifications for design-space alternatives. Test bench models in CyPhyML are given in terms of generic assemblies over the entire design space, so performance can be evaluated for any selected design instance once automated design space exploration is complete. Generated Simulink models are also integrated into a mobility model for interactive 3-D simulation.

System Level Dynamic Modeling Framework Being Developed at Clemson University’s Wind Turbine Drivetrain Testing Facility

2013 ◽  
Author(s):  
Ryan Schkoda ◽  
Konstantin Bulgakov ◽  
Kalyan Chakravarthy Addepalli ◽  
Imtiaz Haque
Keyword(s):  
Wind Turbine ◽  
Dynamic Modeling ◽  
Preliminary Analysis ◽  
Collaborative Work ◽  
Model Development ◽  
System Level ◽  
Modeling Framework ◽  
Testing Facility ◽  
Simulation Strategy ◽  
North Charleston

This paper describes the system level, dynamic modeling and simulation strategy being developed at the Wind Turbine Drivetrain Testing Facility (WTDTF) at Clemson University’s Restoration Institute in North Charleston, SC, USA. An extensible framework that allows various workflows has been constructed and used to conduct preliminary analysis of one of the facility’s test benches. The framework dictates that component and subsystem models be developed according to a list of identified needs and modeled in software best suited for the particular task. Models are then integrated according to the desired execution target. This approach allows for compartmentalized model development which is well suited for collaborative work. The framework has been applied to one of the test benches and has allowed researches to begin characterizing its behavior in the time and frequency domain.

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