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A novel position/speed sensorless vector control approach which is capable of not only driving Induction Motors (IMs), damperless surface/interior Permanent Magnet Synchronous Motors (PMSMs) and PMSMs with damper winding but also tuning all electrical motor parameters used for their sensorless control system design by a unified method is discussed. This approach is tentatively named the Universal...
A permanent magnet synchronous motor (PMSM) is applied to drive air-condition compressor in high speed operation for electric vehicle applications. In order to improve the performance, efficiency and reliability of the PMSM-compressor drive, a set of control strategies are developed. A double mode over-modulation method is proposed to enhance the voltage transfer ratio of PWM inverter and the output...
This paper studies the effect of the inverterpsilas dead time on the dynamic characteristics of the Permanent Magnetic Synchronous Motor (PMSM) systems. Considering the harmonic magnetic field, the state space model and transfer function are given for the PMSM system. Furthermore, the effect of the dead-time on the output voltage of inverter is analyzed. The mathematical model, considering the dead-time...
The paper proposes a motion-sensorless control method for permanent magnet synchronous motor drives when only the DC-link current is measured instead of the motor phase currents. A two-phase pulse-width modulation method is used, allowing the DC-link current to be sampled twice in a switching period at uniform intervals during active voltage vectors. A method is proposed for obtaining the current...
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