Realization of Signal-Injection Sensorless Control of SMPMSM With Saturation-Induced Saliency by Modification of Current Trajectory
- Resource Type
- Periodical
- Authors
- Lee, Y.; Kwon, Y.; Sul, S.
- Source
- IEEE Transactions on Power Electronics IEEE Trans. Power Electron. Power Electronics, IEEE Transactions on. 37(11):13277-13287 Nov, 2022
- Subject
- Power, Energy and Industry Applications
Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
General Topics for Engineers
Nuclear Engineering
Signal Processing and Analysis
Transportation
Rotors
Observers
Trajectory
Torque
Synchronous motors
Traction motors
Sensorless control
Dynamic inductance
magnetic saturation
maximum torque per ampere (MTPA)
optimal trajectory control (OTC)
signal-injection sensorless control (SISC)
surface-mounted permanent-magnet synchronous motor (SMPMSM)
- Language
- ISSN
- 0885-8993
1941-0107
This article discusses the feasibility of signal-injec- tion sensorless control (SISC) in low saliency surface-mounted permanent-magnet synchronous motors (SMPMSMs). At first, dynamic inductances of a target SMPMSM according to rotor position and dq -axes currents are measured from an experiment. The current response induced by the injected voltage is theoretically calculated based on the inductances. The induced current signal in every operable point on dq current plane is evaluated with a newly defined index variable. An optimal current trajectory for the SISC is proposed after the evaluation. By adopting optimal trajectory control instead of maximum torque per ampere control, the performance of the SISC in the SMPMSM can be conspicuously improved at the cost of slightly increased electrical loss. The proposed method is verified with experimental results.