EPE Association: NORpie 2002 - Topic 09: CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS

NORpie 2002 - Topic 09: CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2002 > NORpie 2002 - Topic 09: CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS

   [return to parent folder]

   Comparison of Excitation Signals for Low and Zero Speed Estimation of the Rotor Position in an Axial Flux PMSM
By S. Ovrebo [View]
[Download]

Abstract: Sensorless control of PMSM at low and zero speed requires injection of a test signal to extract information on rotor position. Two methods are commonly used for this excitation: the INFORM method and injection of a high frequency carrier signal. This paper describes the comparison of the two types excitation signals applied to a prototype axial flux PMSM. The paper gives an evaluation of what excitation that would be preferred for the specified prototype machine.

   Effect of Unideal Current Sensors in Direct Torque Controlled PMSM Drives
By L. Laurila; P. Kurronen; M. Niemelä; J. Pyrhönen [View]
[Download]

Abstract: Torque ripple induced by current measurement errors in direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drives is analysed. The focus is on the effect of two phases. It is demonstrated by simulations and measurements that offset error produces a torque ripple component and the fundamental frequency f1 and gain error produces a torque ripple component at twice the fundamental frequency f1.

   Real-Time Speed Control of a Brushless DC Motor via Ethernet
By L. Samaranayake; M. Leksell; S. Alahakoon [View]
[Download]

Abstract: Ethernet is nowadays being focused by various automation system developers over other field bus systems due to its cheap hardware availability, straightforward integration to the Internet and support for the higher bandwidth requirements in the future. It is already being used at higher levels of plant automation. However, on a lower level of the control hierarchy, it is yet to be investigated. This paper describes the theoretical background and implementation of a Real-Time speed control scheme for a Brushless DC (BLDC) motor set-up, closed via an Ethernet network and investigates the hard Real-Time capability of Ethernet within the scope of TCP/IP.

   Comparison of Sensorless Control Methods of a Permanent Magnet Synchronous Motor
By M. Eskola; H. Tuusa [View]
[Download]

Abstract: Methods for estimating the rotor angle and angular speed of a surface magnet motor without the use of mechanical motion sensors are compared in this paper. The estimation methods studied are Extended Kalman Filter, Extended Luenberger observer, Model Reference Adaptive System and nonlinear full-order state observer based on exact linearization technique. The applicability of the estimation methods for closed-loop, estimator based, feedback control are studied by simulations.

NORpie 2002 - Topic 09: CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2002 > NORpie 2002 - Topic 09: CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS
	[return to parent folder]

	Comparison of Excitation Signals for Low and Zero Speed Estimation of the Rotor Position in an Axial Flux PMSM By S. Ovrebo	[View] [Download]
Abstract: Sensorless control of PMSM at low and zero speed requires injection of a test signal to extract information on rotor position. Two methods are commonly used for this excitation: the INFORM method and injection of a high frequency carrier signal. This paper describes the comparison of the two types excitation signals applied to a prototype axial flux PMSM. The paper gives an evaluation of what excitation that would be preferred for the specified prototype machine.

	Effect of Unideal Current Sensors in Direct Torque Controlled PMSM Drives By L. Laurila; P. Kurronen; M. Niemelä; J. Pyrhönen	[View] [Download]
Abstract: Torque ripple induced by current measurement errors in direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drives is analysed. The focus is on the effect of two phases. It is demonstrated by simulations and measurements that offset error produces a torque ripple component and the fundamental frequency f1 and gain error produces a torque ripple component at twice the fundamental frequency f1.

	Real-Time Speed Control of a Brushless DC Motor via Ethernet By L. Samaranayake; M. Leksell; S. Alahakoon	[View] [Download]
Abstract: Ethernet is nowadays being focused by various automation system developers over other field bus systems due to its cheap hardware availability, straightforward integration to the Internet and support for the higher bandwidth requirements in the future. It is already being used at higher levels of plant automation. However, on a lower level of the control hierarchy, it is yet to be investigated. This paper describes the theoretical background and implementation of a Real-Time speed control scheme for a Brushless DC (BLDC) motor set-up, closed via an Ethernet network and investigates the hard Real-Time capability of Ethernet within the scope of TCP/IP.

	Comparison of Sensorless Control Methods of a Permanent Magnet Synchronous Motor By M. Eskola; H. Tuusa	[View] [Download]
Abstract: Methods for estimating the rotor angle and angular speed of a surface magnet motor without the use of mechanical motion sensors are compared in this paper. The estimation methods studied are Extended Kalman Filter, Extended Luenberger observer, Model Reference Adaptive System and nonlinear full-order state observer based on exact linearization technique. The applicability of the estimation methods for closed-loop, estimator based, feedback control are studied by simulations.