General arbitrary injection approach for synchronous machines

In this paper, an approach is presented to calculate the rotor position of an permanent magnet synchronous machine from arbitrary current ripples. It makes no difference if the current ripple is generated by an injection or only by the pulse width modulation (PWM). For low speeds, where the current ripple of the PWM is not sufficient, the PWM pulses are shifted in order to increase the current ripple. In the medium and high speed region, this modification of the PWM is not required. Together with a standard field oriented control structure, this verified by experimental results.

[1]  R. Kennel,et al.  Saliency based sensorless field- oriented control for permanent magnet synchronous machines in the whole speed range , 2012, 3rd IEEE International Symposium on Sensorless Control for Electrical Drives (SLED 2012).

[2]  M. Schroedl,et al.  Sensorless control of AC machines at low speed and standstill based on the "INFORM" method , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[3]  Seung-Ki Sul,et al.  Position sensorless operation of IPMSM with near PWM switching frequency signal injection , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[4]  Paul P. Acarnley,et al.  Review of position-sensorless operation of brushless permanent-magnet machines , 2006, IEEE Transactions on Industrial Electronics.

[5]  Jan Melkebeek,et al.  Seamless integration of a low-speed position estimator for IPMSM in a current-controlled voltage-source inverter , 2010, 2010 First Symposium on Sensorless Control for Electrical Drives.

[6]  Ralph Kennel,et al.  Sensorless speed and position control of synchronous machines using alternating carrier injection , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[7]  R. D. Lorenz,et al.  Rotor position and velocity estimation for a salient-pole permanent magnet synchronous machine at standstill and high speeds , 1998 .

[8]  Ralph Kennel,et al.  Robust encoderless speed control of a synchronous machine by direct evaluation of the back-EMF angle without observer , 2010, 2010 First Symposium on Sensorless Control for Electrical Drives.

[9]  R. Kennel,et al.  Saliency based encoderless predictive torque control without signal injection , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[10]  Mark Sumner,et al.  Improved sensorless control of a permanent magnet machine using fundamental pulse width modulation excitation , 2011 .

[11]  Ralph Kennel,et al.  Sensorless field- oriented control for permanent magnet synchronous machines with an arbitrary injection scheme and direct angle calculation , 2011, 2011 Symposium on Sensorless Control for Electrical Drives.

[12]  Ralph Kennel,et al.  A nonlinear estimator for dynamical and robust sensorless control of permanent magnet synchronous machines , 2011, IEEE Conference on Decision and Control and European Control Conference.

[13]  P. Landsmann,et al.  Saliency-based sensorless predictive torque control with reduced torque ripple , 2012, IEEE Transactions on Power Electronics.