EPE Association: EPE 2007 - Subtopic 10-3 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor

EPE 2007 - Subtopic 10-3 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 10: 'Electrical machines' > EPE 2007 - Subtopic 10-3 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor

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   A New Electromagnetic Model for PM Synchronous Machines
By DAJAKU Gurakuq; GERLING Dieter [View]
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Abstract: In this paper a new and effective electromagnetic model for PM machines is presented and analysed. The new mathematical model is based on the modified equivalent circuit per phase of the PM machine and is developed based on the space-vector theory. Using the new model the performances of the electrical machines for the linear and saturated case can be described with high accuracy. The accuracy of this model is verified and validated by comparing with other methods (measurements and FEM calculations).

   A Novel Method for PM Synchronous Machine Rotor Position Detection
By SARCA Aurelian; KREINDLER Liviu Mario; POPA Dumitru-Daniel; GIUCLEA Raducu [View]
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Abstract: The paper presents a new efficient method for the detection of rotor initial position of a permanent magnet synchronous motor with an incremental encoder, including the case of a loaded motor. The fundamental principle of this technique is to determine the rotor position at startup by estimating the electrical angle which allows passing the motor rated/peak current through stator windings without moving the rotor from its standstill position. As compared to other approaches, the present technique does not cause motor rotation during rotor position detection and it is therefore very promising for particular kinds of applications, which do not allow the motor to rotate/move potentially in the wrong direction during startup. This method is more efficient in respect of accuracy and reliability than the conventional method using commutation signal, especially for small drives. Experimental results show that the proposed algorithm is capable of reliable and fast rotor initial position estimation.

   Poles position identification of permanent magnet axial flux motor using PIPCRM sensorless method.
By AL-KHAYAT Nazar; WISNIEWSKI Janusz; KOCZARA Wlodzimierz; JAKUBOWSKI Piotr [View]
[Download]

Abstract: The paper describes new sensorless method control of an axial flux permanent magnet motor at standstill and at low speed. This sensorless method called PIPCRM (Position Identification by Parallel Current Rate Measurement) was developed to provide sensorless start axial flux permanent magnet motor in demanded direction from standstill. The PIPCRM method is used to detect rotor poles position and then to force the stator current to achieve motor torque which is required to control motion of the permanent magnet motor. The paper presents theory of the PIPCRM method and laboratory tests that confirm its application to drives.

EPE 2007 - Subtopic 10-3 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 10: 'Electrical machines' > EPE 2007 - Subtopic 10-3 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor
	[return to parent folder]

	A New Electromagnetic Model for PM Synchronous Machines By DAJAKU Gurakuq; GERLING Dieter	[View] [Download]
Abstract: In this paper a new and effective electromagnetic model for PM machines is presented and analysed. The new mathematical model is based on the modified equivalent circuit per phase of the PM machine and is developed based on the space-vector theory. Using the new model the performances of the electrical machines for the linear and saturated case can be described with high accuracy. The accuracy of this model is verified and validated by comparing with other methods (measurements and FEM calculations).

	A Novel Method for PM Synchronous Machine Rotor Position Detection By SARCA Aurelian; KREINDLER Liviu Mario; POPA Dumitru-Daniel; GIUCLEA Raducu	[View] [Download]
Abstract: The paper presents a new efficient method for the detection of rotor initial position of a permanent magnet synchronous motor with an incremental encoder, including the case of a loaded motor. The fundamental principle of this technique is to determine the rotor position at startup by estimating the electrical angle which allows passing the motor rated/peak current through stator windings without moving the rotor from its standstill position. As compared to other approaches, the present technique does not cause motor rotation during rotor position detection and it is therefore very promising for particular kinds of applications, which do not allow the motor to rotate/move potentially in the wrong direction during startup. This method is more efficient in respect of accuracy and reliability than the conventional method using commutation signal, especially for small drives. Experimental results show that the proposed algorithm is capable of reliable and fast rotor initial position estimation.

	Poles position identification of permanent magnet axial flux motor using PIPCRM sensorless method. By AL-KHAYAT Nazar; WISNIEWSKI Janusz; KOCZARA Wlodzimierz; JAKUBOWSKI Piotr	[View] [Download]
Abstract: The paper describes new sensorless method control of an axial flux permanent magnet motor at standstill and at low speed. This sensorless method called PIPCRM (Position Identification by Parallel Current Rate Measurement) was developed to provide sensorless start axial flux permanent magnet motor in demanded direction from standstill. The PIPCRM method is used to detect rotor poles position and then to force the stator current to achieve motor torque which is required to control motion of the permanent magnet motor. The paper presents theory of the PIPCRM method and laboratory tests that confirm its application to drives.