Field oriented control of permanent magnet synchrounous motors using three-level neutral-point-clamped inverter

Date

2012

Author

Meşe, Hüseyin

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In this thesis, field oriented control of permanent magnet synchronous motors using three-level neutral-point-clamped inverter is studied. Permanent magnet synchronous motors are used in high performance drive applications. In this study, the permanent magnet synchronous motor is fed by three-level neutral-point-clamped inverter. For three-level neutral-point-clamped inverter different space vector modulation algorithms, which are reported in literature, are analyzed and compared via computer simulations. The voltage balance on dc-link capacitors is also analyzed and a software control method is implemented in conjunction with the space vector PWM modulation, utilized. Nonlinear effects such as dead-time, semiconductor voltage drop and delays in gate drive circuitries also present in neutral-point-clamped inverter. The effects of these nonlinearities are studied and a compensation method for these nonlinear effects is proposed. The theoretical results are supported with computer simulations and verified with experimental results.

Subject Keywords

Electric inverters., Magnetic devices., Electric motors., Motors.

URI

http://etd.lib.metu.edu.tr/upload/12614407/index.pdf
https://hdl.handle.net/11511/21618

Collections

Graduate School of Natural and Applied Sciences, Thesis