Implementation of interior permanent magnet synchronous machines and control in a wind power emulating test bench
Erling, Ville (2017)
Erling, Ville
2017
Automaatiotekniikka
Teknisten tieteiden tiedekunta - Faculty of Engineering Sciences
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Hyväksymispäivämäärä
2017-11-08
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201710182031
https://urn.fi/URN:NBN:fi:tty-201710182031
Tiivistelmä
The growing concern about climate change has effected to that the corporations and governments invest more and more to renewable energy sources, which are less pollutant to the atmosphere. One of the renewable energy sources is wind power and in whole this millennium the popularity of wind power has steadily risen, which has caused an economical interest to develop as efficient wind turbine generators as possible.
This thesis focuses on a wind power related test bench, in which permanent magnet synchronous machines are used. The test bench will be located in the laboratory of power electronics of Tampere University of Technology and it will have one motor and one generator, which are controlled by converters. The motor works as prime mover and it has an input of torque reference, which emulates the torque caused by the wind speed. Our own control is implemented on the generator side and between these two machines is installed a torque transducer. The voltages and the currents are measured by Boombox sensors and the power quality is enhanced by LCL filters.
The test bench will be used for research purposes after it is complete. Interest is to investigate the dynamics of the control system. The other interest is to model numerically the stator windings by the help of preinstalled measurement windings.
The test bench uses interior permanent magnet synchronous machines, where the inductances are different at direct- and quadrature-axes. The motor and generator were chosen with shaft powers of 17 kW. The nominal rotating speed in both was 127 rpm. Inside the machines were installed incremental encoders to provide more accurate measurement of the rotating speed.
Four commercial converters were chosen with 61 A maximum current. The diode bridges were bypassed for enabling bidirectional power flow, when connecting the DC-link together by two similar converters in motor and generator side. The generator side had also VaconBus adapters, which allow to develop our own control algorithms.
The MATLAB Simulink models of the permanent magnet synchronous generator were created based on the dynamic equations, which were then simulated. The motor operation was verified by testing it without load, and the results were measured and documented.
This thesis focuses on a wind power related test bench, in which permanent magnet synchronous machines are used. The test bench will be located in the laboratory of power electronics of Tampere University of Technology and it will have one motor and one generator, which are controlled by converters. The motor works as prime mover and it has an input of torque reference, which emulates the torque caused by the wind speed. Our own control is implemented on the generator side and between these two machines is installed a torque transducer. The voltages and the currents are measured by Boombox sensors and the power quality is enhanced by LCL filters.
The test bench will be used for research purposes after it is complete. Interest is to investigate the dynamics of the control system. The other interest is to model numerically the stator windings by the help of preinstalled measurement windings.
The test bench uses interior permanent magnet synchronous machines, where the inductances are different at direct- and quadrature-axes. The motor and generator were chosen with shaft powers of 17 kW. The nominal rotating speed in both was 127 rpm. Inside the machines were installed incremental encoders to provide more accurate measurement of the rotating speed.
Four commercial converters were chosen with 61 A maximum current. The diode bridges were bypassed for enabling bidirectional power flow, when connecting the DC-link together by two similar converters in motor and generator side. The generator side had also VaconBus adapters, which allow to develop our own control algorithms.
The MATLAB Simulink models of the permanent magnet synchronous generator were created based on the dynamic equations, which were then simulated. The motor operation was verified by testing it without load, and the results were measured and documented.