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Resolution of Initial position estimation based on high frequency voltage signal injection for IPMSM was investigated. The simulation was carried out to investigate the influence of inductance saturation due to motor drive currents and quantization errors due to A/D conversion on the estimation accuracy. An experimental system consisting of a IPM motor and a voltage-source PWM inverter has been implemented...
A previously reported simplified vector control for position-sensorless permanent magnet synchronous motors can be affected by errors in setting the motor parameters, because no feedback compensator is used. We examine the effects of errors on the steady-state performance of these motors in this paper. It was found that the current amplitude increases when a parameter error is given and the effect...
This paper proposes a newly developed algorithm for the initial pole-position estimation of a surface (non-salient) permanent magnet linear synchronous motor, which is carried out under the full position closed loop control without any pole sensors and is insensitive to the motor parameters. This is based on the principle that the initial pole-position is simply calculated by the reverse trigonometric...
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