Sensorless control of BLDC motor from zero to low speed based on rotor saliency

A sensorless brushless DC (BLDC) control algorithm based on rotor saliency is proposed in this paper. A voltage pulse injection method is used for inductance measurement and the peak inductance current is measured through the salient phase to increase accuracy. Zero speed and arbitrary low speed sensorless operations can be achieved with the proposed algorithm. Finite element analysis method (FEM) simulations and experimental results are provided to verify the proposed control algorithm.

[1]  Mei Ying,et al.  A Novel Starting Method of Sensorless BLDC Motors for Electric Vehicles , 2010, 2010 International Conference on Electrical and Control Engineering.

[2]  Frede Blaabjerg,et al.  Hybrid I-f Starting and Observer-Based Sensorless Control of Single-Phase BLDC-PM Motor Drives , 2012, IEEE Transactions on Industrial Electronics.

[3]  Zheng Zhang,et al.  Sliding-Mode Sensorless Control of Direct-Drive PM Synchronous Motors for Washing Machine Applications , 2009, IEEE Transactions on Industry Applications.

[4]  J. Moreira.  Indirect sensing for rotor flux position of permanent magnet AC motors operating in a wide speed range , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[5]  Longya Xu,et al.  A New High-Frequency Injection Method for Sensorless Control of Doubly Fed Induction Machines , 2012 .

[6]  J. C. Moreira,et al.  Indirect sensing for rotor flux position of permanent magnet AC motors operating over a wide speed range , 1994 .

[7]  Mehrdad Ehsani,et al.  Integrated current regulation for a brushless ECM drive , 1991 .

[8]  H. Akagi,et al.  An approach to position sensorless drive for brushless DC motors , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[9]  R. Wu,et al.  A permanent magnet motor drive without a shaft sensor , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[10]  Gunhee Jang,et al.  Position detection and start-up algorithm of a rotor in a sensorless BLDC motor utilising inductance variation , 2002 .

[11]  M. Ehsani,et al.  Sensorless control of the BLDC motors from near-zero to high speeds , 2004, IEEE Transactions on Power Electronics.

[12]  Longya Xu,et al.  An adaptive sliding mode observer for induction motor sensorless speed control , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[13]  Jingbo Liu,et al.  An on-line position error compensation method for sensorless IPM motor drives using high frequency injection , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[14]  Longya Xu,et al.  Eddy Current Effects on Rotor Position Estimation and Magnetic Pole Identification of PMSM at Zero and Low Speeds , 2008, IEEE Transactions on Power Electronics.