Title :
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
fDate :
May 30 2011-June 3 2011
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;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on
Conference_Location :
Jeju
Print_ISBN :
978-1-61284-958-4
Electronic_ISBN :
2150-6078
DOI :
10.1109/ICPE.2011.5944644
