The Current Harmonics Elimination Control Strategy for Six-Leg Three-Phase Permanent Magnet Synchronous Motor Drives

This paper focuses on the analysis and development of low-current harmonics for a six-leg, three-phase inverter for permanent-magnet synchronous motor (PMSM) drives. Each phase of the PMSM is operating independently, the low-order harmonics appear in the back electromotive forces (EMFs) and currents...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2014-06, Vol.29 (6), p.3032-3040
Main Authors: HWANG, Jonq-Chin, WEI, Hsiao-Tse
Format: Article
Language:English
Subjects:
Applied sciences
Computer simulation
Control systems
Current harmonics elimination
Electric currents
Electric potential
Electrical engineering. Electrical power engineering
Electrical equipment
Electrical machines
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Harmonic analysis
Harmonic distortion
Harmonics
Inverters
Mathematical analysis
Miscellaneous
Permanent magnet motors
Power electronics, power supplies
Power harmonic filters
Prototypes
Regulation and control
Ripples
six-leg
Synchronous motors
three-phase permanent magnet synchronous motor
Torque
Vectors (mathematics)
zero-sequence harmonic
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Summary:This paper focuses on the analysis and development of low-current harmonics for a six-leg, three-phase inverter for permanent-magnet synchronous motor (PMSM) drives. Each phase of the PMSM is operating independently, the low-order harmonics appear in the back electromotive forces (EMFs) and currents. In this case, the standard vector control cannot handle the current harmonics. This harmonic enhances the current and causes the torque ripple. This paper presents a zero-axis current estimator auxiliary vector control method to compensate for three multiples of the voltage harmonic. This method can eliminate the zero-axis current. A prototype PMSM system was built using the TMS302F28335 digital signal processor. And the computer simulation and control method were completed. When the system operated at half load, the total harmonic distortion of current decreased from 20.89% to 4.42%. At full load, the total harmonic distortion of current decreased from 8.43% to 1.71%.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2013.2275194