A Novel Inductance Asymmetry Compensation Method for High Frequency Signal Injection Sensorless Control of Dual Three-Phase IPMSMs
- Resource Type
- Conference
- Authors
- Chen, Yang; Zhu, Zi Qiang; Wu, Ximeng; Liu, Chaohui
- Source
- 2023 IEEE International Electric Machines & Drives Conference (IEMDC) Electric Machines & Drives Conference (IEMDC), 2023 IEEE International. :1-7 May, 2023
- Subject
- Power, Energy and Industry Applications
Permanent magnet machines
Inductance
Windings
Error compensation
Rotors
Sensorless control
Harmonic analysis
Dual three-phase IPMSM
high frequency signal injection
inductance asymmetry
sensorless control
signal-to-noise ratio
- Language
This paper proposes a simple inductance asymmetry compensation method for minimizing the second-order harmonic current responses and corresponding position errors in high frequency signal injection sensorless controlled dual three-phase interior permanent magnet synchronous machines (IPMSMs). It is found that the second-order harmonics of HF current responses in two sets of three-phase windings due to self-inductance asymmetry have opposite phase angles in the double dq control method. Thus, a simple current summation-based position error compensation method including a novel online calculation technique of harmonic amplitude ratio is proposed. The proposed compensation method can not only suppress the second-order position error effectively but also maintain a high signal-to-noise ratio of the sensorless control system. It is validated by experiments under different inductance asymmetry conditions.