Sensorless drive of surface-mounted permanent-magnet motor by high-frequency signal injection based on magnetic saliency
| Autor: | Jung-Ik Ha, Jihoon Jang, Seung-Ki Sul, M. Sawamura, Kozo Ide |
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| Rok vydání: | 2003 |
| Předmět: |
Physics
Stator Rotor (electric) Permanent magnet synchronous generator AC motor Industrial and Manufacturing Engineering law.invention Quantitative Biology::Subcellular Processes Direct torque control Control and Systems Engineering Control theory law Magnet Electrical and Electronic Engineering Synchronous motor Machine control |
| Zdroj: | IEEE Transactions on Industry Applications. 39:1031-1039 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | This paper presents a new sensorless control scheme of a surface-mounted permanent-magnet (SMPM) motor using high-frequency voltage signal injection method based on the high-frequency impedance difference. In the SMPM motor, due to the flux of the permanent magnet, the stator core around the q-axis winding is saturated. This makes the magnetic saliency in the motor. This magnetic saliency has the information about the rotor position. The high-frequency voltage signal is injected into the motor in order to detect the magnetic saliency and estimate the rotor position. In this paper, the relationship between the high-frequency voltages and high-frequency currents is developed using the voltage equations at the high frequency, and the high-frequency impedance characteristics are analyzed experimentally under various conditions. The proposed sensorless control scheme makes it possible to drive the SMPM motor in the low-speed region including zero speed, even under heavy load conditions. The experimental results verify the performance of the proposed sensorless algorithm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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