Flux-Linkage Based Fundamental and Harmonic Current Control of Saturated Salient AC Machines

2021 ◽  
Author(s):  
Vinod Chowdary Peddi ◽  
Anno Yoo ◽  
Brent S. Gagas
Keyword(s):  
Current Control ◽  
Flux Linkage ◽  
Harmonic Current ◽  
Ac Machines

scholarly journals Third harmonic current injection into highly saturated multi-phase machines

2017 ◽  
Vol 66 (1) ◽  
pp. 179-187
Author(s):  
Felix Klute ◽  
Torben Jonsky
Keyword(s):  
Current Injection ◽  
Saturation Level ◽  
Permanent Magnet Synchronous Machines ◽  
Flux Linkage ◽  
Harmonic Current ◽  
Fem Model ◽  
Third Harmonic ◽  
The Third ◽  
Rotor Flux ◽  
Multi Phase

Abstract One advantage of multi-phase machines is the possibility to use the third harmonic of the rotor flux for additional torque generation. This effect can be maximised for Permanent Magnet Synchronous Machines (PMSM) with a high third harmonic content in the magnet flux. This paper discusses the effects of third harmonic current injection (THCI) on a five-phase PMSM with a conventional magnet shape depending on saturation. The effects of THCI in five-phase machines are shown in a 2D FEM model in Ansys Maxwell verified by measurement results. The results of the FEM model are analytically analysed using the Park model. It is shown in simulation and measurement that the torque improvement by THCI increases significantly with the saturation level, as the amplitude of the third harmonic flux linkage increases with the saturation level but the phase shift of the rotor flux linkage has to be considered. This paper gives a detailed analysis of saturation mechanisms of PMSM, which can be used for optimizing the efficiency in operating points of high saturations, without using special magnet shapes.

scholarly journals Harmonic Current Reduction Control Based on Model Predictive Direct Current Control of IPMSM and Input Grid Circuit

2020 ◽  
Vol 9 (1) ◽  
pp. 17-26
Author(s):  
Yushi Araki ◽  
Kodai Abe ◽  
Kiyoshi Ohishi ◽  
Yuki Yokokura ◽  
Junichi Sano ◽  
...  
Keyword(s):  
Direct Current ◽  
Current Control ◽  
Harmonic Current ◽  
Direct Current Control ◽  
Current Reduction
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