A novel method to compensate non-linearity of inverter in sensorless operation of PMSM

Author

Park, Yongsoon ; Sul, Seung-Ki

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

915

Lastpage

922

Abstract

The non-linearity of an inverter can be modeled as the distorted voltages. A novel method utilizing the trapezoidal voltages is proposed to cancel out the distorted voltages by the non-linearity. By modulating the shape of the trapezoid, the harmonic distortions in the output currents and the voltage references can be reduced. An integral controller is employed to modulate the trapezoid with simple signal processing. To evaluate the effectiveness of the propose method, the conventional methods are compared through the experimental results.

Keywords

PWM invertors; harmonic distortion; permanent magnet motors; sensorless machine control; synchronous motors; PMSM; distorted voltages; harmonic distortions; integral controller; inverter nonlinearity; trapezoidal voltages; Capacitance; Harmonic analysis; Harmonic distortion; Inverters; Permanent magnet motors; Power harmonic filters; Switches; non-linearity of inverter; permanent magnet synchronous motor; sensorless control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944644

Filename

5944644