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Power hardware in-the-loop laboratory test environment for small scale wind turbine prototype
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| Author(s) |
Anssi MÄKINEN, Tuomas MESSO, Heikki TUUSA |
| Abstract |
This paper presents power hardware-in-the-loop (PHIL) laboratory test environment for wind turbine(WT) prototype. The environment utilizes dSPACE and RTDS real time simulators, convertercontrolled grid emulator (GE) and the prototype. The analysis is carried out using frequency responsemeasurements. The main contribution is the detailed analysis of the grid emulator performance. Themain performance limitations are revealed and it is shown that the performance of the GE is dependenton the hardware of the WT prototype in addition to the design of the emulator itself. The comparisonof the operation of the GE with open loop and closed loop control modes is carried out. It is shownthat the accuracy of the environment is clearly sufficient for symmetrical voltage dips when closedloop control system is used. However, the open loop controlled GE cannot execute correct point ofcommon coupling voltages independent on the operation point of the WT which is relative to the windconditions. If the GE is controlled at open loop or at closed loop, the network asymmetrical voltagedips are not generated accurately. The reason is that the system bandwidth is not wide enough toexecute negative sequence 50Hz component without gain and phase error. However, the accuracy ofthe PHIL environment is clearly enough for testing the operation of WT control functionalities underasymmetrical network voltages. These functionalities may include PCC voltage balancing or positivesequence reactive power injection. |
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| Filename: | 0188-epe2014-full-15011371.pdf |
| Filesize: | 598.7 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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