NDLI: Fault-tolerant control strategy with reduced switching frequency for inverter-based fault in open-winding PMSM system

Content Provider	IET Digital Library
Author	Lv, Kangfei Dong, Xiwei Liu, Lili Nian, Heng
Abstract	The open-winding permanent magnet synchronous machine (OW-PMSM) system is widely investigated for its potential fault tolerance while extra switching loss is inevitable due to the doubled switch devices. Hence, to further improve its performance, a fault-tolerant control strategy against the inverter-based fault, in which the corresponding terminal of the phase winding is connected with the mid-point of the two capacitances in parallel to the dc voltage, is proposed in this Letter. In the proposed method, the reference voltages are modulated under the three-phase stationary coordinate system, considering the voltage fluctuation of the capacitances. In addition, to reduce the switching frequency, the reference voltages are adjusted synchronously, according to the polarity of the reference voltages. Moreover, the effective modulation range of the proposed method is analysed. Finally, the performance of the proposed strategy is validated experimentally.
Starting Page	563
Ending Page	565
Page Count	3
ISSN	00135194
Volume Number	56
e-ISSN	1350911X
Issue Number	Issue 11, May (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/56/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2020.0012
Journal	Electronics Letters
Publisher Date	2020-03-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Dc Voltage Doubled Switch Device Drive Fault Tolerance Fault-tolerant Control Strategy Inverter-based Fault Invertors Machine Control Machine Windings Mechanical Variables Control OW-PMSM Permanent Magnet Machine Permanent Magnet Motors Permanent Magnet Synchronous Machine Phase Winding PMSM System Potential Fault Tolerance While Extra Switching Loss Power Converter Power Supplies to Apparatus Reduced Switching Frequency Reference Voltage Switching Converter Synchronous Machine Synchronous Motor Drive Synchronous Motors Torque Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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