Position estimation of a surface mounted permanent magnet synchronous motor controlled by a three-phase matrix converter using the space vector PWM waveform

This paper presents a sensorless position estimation technique for a surface mounted PMSM that relies on the excitation of the space vector PWM waveform of a three-phase matrix converter. The transient response of the motor line currents are measured and employed to construct the rotor position signals. The principle of the estimation method is given in the paper and validated by the experimental results.