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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Field Oriented Current Control with Harmonic Injection in a Six-Phase Induction Machine

Shan, Xinyue January 2021 (has links)
As a new type of machine, the multi-phase machine has the advantages ofhigher power rating, higher fault tolerance capability and more degrees offreedom to control compared with the traditional machine. Aiming at runninga multi-phase machine with different phase-pole configurations smoothly,a new method called harmonic plane decomposition is presented. Thisproject focuses on applying harmonic plane decomposition to the modellingand analysis of a six-phase machine. The parameters of the machine wereidentified in both the first and fifth harmonic planes. The machine modelusing harmonic plane decomposition method is built in Matlab/Simulink. Asimulation based on the indirect rotor field oriented control of the machine isthen performed. The simulation result shows that the machine could switchbetween different phase-pole configurations without causing too much speedripple. Debugging and testing a prototype control board is conducted. Thecontrol strategy of the machine is tested on the testbench. The machine couldoperate as a six-phase machine successfully. / Som en ny typ har flerfasmaskinen fördelarna, inklusive högre effekt, högrefeltolerans och fler frihetsgrader att styra jämfört med den traditionella maskinen.Med sikte på att köra en flerfasmaskin med olika faspolskonfigurationersmidigt presenteras en ny metod som kallas harmonisk plan sönderdelning.Detta projekt fokuserar på att tillämpa harmonisk plan sönderdelning på modelleringoch analys av en sexfasmaskin. Maskinens parametrar identifieradesi både det första och det femte harmoniska planet. Maskinmodellen medharmonisk plan sönderdelning är byggd i Matlab/Simulink. En simuleringbaserad på den indirekta rotorfältorienterade styrningen av maskinen utförssedan, och resultatet visar att maskinen kan växla mellan olika faspolskonfigurationerutan att orsaka oacceptabel hastighetsrippling. Felsökning ochtestning av en prototypstyrplatta utförs också, och maskinens styrstrategi testaspå testbänken. Sammantaget kan maskinen fungera som en sexfasmaskinframgångsrikt.

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