Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 33, Issue 2, Pages 1528-1540Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2688478
Keywords
High-speed brushless direct current (BLDC); phase-locked loop (PLL); sensorless drive; virtual third harmonic back electromotive force (back-EMF)
Categories
Funding
- National Key Research and Development Program of China [2016YFB0500804]
- National Major Project for the Development and Application of Scientific Instrument Equipment of China [2012YQ040235]
- National Natural Science Foundation of China [61421063]
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In order to improve the performance of the highspeed brushless direct current motor drives, a novel high-precision sensorless drive has been developed. It is well known that the inevitable voltage pulses, which are generated during the commutation periods, will impact the rotor position detecting accuracy, and further impact the performance of the overall sensorless drive, especially in the higher speed range or under the heavier load conditions. For this reason, the active compensation method based on the virtual third harmonic back electromotive force incorporating the SFF-SOGI-PLL (synchronic-frequency filter incorporating the second-order generalized integrator based phase-locked loop) is proposed to precise detect the commutation points for sensorless drive. An experimental driveline system used for testing the electrical performance of the developed magnetically suspended motor is built. The mathematical analysis and the comparable experimental results have been shown to validate the effectiveness of the proposed sensorless drive algorithm.
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