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Matthias Brodatzki,Jan Richter,Johannes Kolb,Michael Braun 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
A descriptive, easy to implement approach for the self sensing operation of permanent magnet synchronous machines (PMSM) is presented in this paper. Position and speed identification is performed by solving a nonlinear equation system with a simple, real-time capable algorithm. The approach considers nonlinear magnetic effects by means of flux linkage maps and thus provides reliable position and speed identification in the full speed and torque operating range for stationary and dynamic operation. An experimental proof of functionality is presented.
Götz Georg Tobias,Kolbe Jan,von Hoegen Anne,De Doncker Rik W. 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.3
In modern electrical traction drives, a variable dc-link voltage can be applied to increase efficiency in partial load. A dc-dc converter can supply a variable dc-link voltage and transfer energy between the battery and the dc-link. Hybrid cars combine the advantages of long driving ranges with the partial zero-emission operation. In series-hybrid drive trains, a switched reluctance machine can be used as a generator for the range extender unit. This paper presents at first the mechanism of energy transfer between the battery and the dc-link. Further, a control parameter analysis of an inverter topology for a switched reluctance machine, which combines the dc-dc converter for the power transfer between the battery and the dc-link with the inverter for the generator, is investigated. For this analysis, the control parameters turn-on, freewheeling and turn-off angle are varied to test the controllability of the energy transfer between these two components. The simulation results of the presented analysis are finally validated with measurements on the test bench.