Controlling airgap magnetic flux density harmonics in synchronous machines using field current injection

In this paper, a method to control the harmonic content of the magnetic flux density in the airgap of a synchronous machine is presented. Voltage harmonics in one phase as well as the exciting magnetic forces can be affected. Switched power electronics were used to provide the field current to a syn...

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Bibliographic Details
Published inElectrical engineering Vol. 103; no. 1; pp. 195 - 203
Main Authors Evestedt, Fredrik, Pérez-Loya, J. José, Abrahamsson, C. Johan D., Lundin, Urban
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2021
Springer Nature B.V
Subjects
Air gaps
Control methods
Current injection
Economics and Management
Electric potential
Electrical Engineering
Electrical Machines and Networks
Electromagnetic forces
Energy Policy
Engineering
Field current control
Flux density
Harmonics
Magnetic flux
Magnetism
Original Paper
Power Electronics
Synchronous machines
Voltage
Voltage control
Field current control
Synchronous machines
Voltage control
Electromagnetic forces
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Summary:In this paper, a method to control the harmonic content of the magnetic flux density in the airgap of a synchronous machine is presented. Voltage harmonics in one phase as well as the exciting magnetic forces can be affected. Switched power electronics were used to provide the field current to a synchronous machine, the control added specific current harmonics to the DC field current in order to minimize either voltage harmonics or magnetic forces. The method is verified and compared with simulations and experiments on an existing electrical machine.
ISSN:0948-7921
1432-0487
1432-0487
DOI:10.1007/s00202-020-01069-5