EPE Association: EPE 2003 - Topic 10d: Actuators, Generators and Drives

EPE 2003 - Topic 10d: Actuators, Generators and Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 10: POWER ELECTRONICS AND DRIVES IN AEROSPACE AND SPACE > EPE 2003 - Topic 10d: Actuators, Generators and Drives

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   The impact of the matrix converter on motor choice for an integrated flight control surface actuation drive system
By P.A. Robson; K.J. Bradley; P.W. Wheeler; J.C. Clare; L. de Lillo; C. Gerada; S.J. Pickering; D. Lampard; C.K.Goh; G. Towers; C.Whitley [View]
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Abstract: This paper describes research related to producing integrated electric motor driven flight control surface actuation systems, for a More Electric Aircraft. The main requirements and motor options are discussed. The advantage of the Matrix Converter in terms of compactness, due to removal of energy storage elements, is highlighted. However, this advantage is shown to bring with it problems when motors which have switched voltage and current waveforms are employed. The resulting discontinuities in power flow during current commutations are reflected at the input terminals to the drive as supply current harmonics.

   A matrix converter motor drive for an aircraft actuation system
By P.Wheeler; L. Empringham; M. Apap; L. de Lilo; J. Clare ; K. Bradley; C. Whitley; G. Towers [View]
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Abstract: This paper describes the design, construction and testing of a Matrix Converter Permanent Magnet Motor Drive for an Electro- Hydrostatic Aircraft Actuator (EHA). The converter has been built using a 35Amp Eupec Matrix Converter module with closed loop vector control. The commutation time has been minimized to avoid any unnecessary waveform distortion. Practical results of the converter operating as an actuator position controller are presented.

   Driving and control electronic of Piezoelectric actuators for space application
By O. Sosnicki [View]
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Abstract: Piezoelectric mechanisms are more and more used in space applications requiring precise positioning functions for scientific payloads or optical functions. Indeed, piezoelectric actuators are generally deemed of being good candidates for driving and control compact mechanisms. They offer advantages like: · fine precision, · low power consumption, · fast time response, · and easier implementation. For the application of these new components, an adapted electronic must be used to obtain the command of the actuators. The use of an unsuited driver can ruin the accuracy of the mechanism. To comply with the space applications needs, the “FB-LA75 SPACE” has to comply with many requirements besides the functional ones: space environment in terms of vibration, radiation and thermal vacuum, but also in terms of quality of design and reliability. After a brief recall about the original “Amplified Piezo Actuators” family and the qualified actuators designed by Cedrat Technologies, a high accuracy driving electronic development is proposed in order to obtain the full characteristics of the mechanism. The study and the accuracy budget are also described: phase stability, thermal stability, noise budget. The paper will conclude with: · a discussion of these new performances, · estimated capabilities for the future, · application perspectives.

   Development of a brushless DC motor sensorless control technique for high-altitude solar-electric airplanes propulsion drives
By R. Bojoi; F. Farina; G. Griva; F. Profumo; A. Tenconi [View]
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Abstract: In the paper a sensorless control solution for Brushless DC motors is proposed for a High-Altitude Solar-Electric Airplane Propulsion Drive. The proposed technique is able to bring the motor from stand-still to the maximum speed by using back EMFs estimation to obtain the rotor position and speed. The complete drive system has been simulated, showing its robustness to detuned parameter conditions over the whole required speed range.

EPE 2003 - Topic 10d: Actuators, Generators and Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 10: POWER ELECTRONICS AND DRIVES IN AEROSPACE AND SPACE > EPE 2003 - Topic 10d: Actuators, Generators and Drives
	[return to parent folder]

	The impact of the matrix converter on motor choice for an integrated flight control surface actuation drive system By P.A. Robson; K.J. Bradley; P.W. Wheeler; J.C. Clare; L. de Lillo; C. Gerada; S.J. Pickering; D. Lampard; C.K.Goh; G. Towers; C.Whitley	[View] [Download]
Abstract: This paper describes research related to producing integrated electric motor driven flight control surface actuation systems, for a More Electric Aircraft. The main requirements and motor options are discussed. The advantage of the Matrix Converter in terms of compactness, due to removal of energy storage elements, is highlighted. However, this advantage is shown to bring with it problems when motors which have switched voltage and current waveforms are employed. The resulting discontinuities in power flow during current commutations are reflected at the input terminals to the drive as supply current harmonics.

	A matrix converter motor drive for an aircraft actuation system By P.Wheeler; L. Empringham; M. Apap; L. de Lilo; J. Clare ; K. Bradley; C. Whitley; G. Towers	[View] [Download]
Abstract: This paper describes the design, construction and testing of a Matrix Converter Permanent Magnet Motor Drive for an Electro- Hydrostatic Aircraft Actuator (EHA). The converter has been built using a 35Amp Eupec Matrix Converter module with closed loop vector control. The commutation time has been minimized to avoid any unnecessary waveform distortion. Practical results of the converter operating as an actuator position controller are presented.

	Driving and control electronic of Piezoelectric actuators for space application By O. Sosnicki	[View] [Download]
Abstract: Piezoelectric mechanisms are more and more used in space applications requiring precise positioning functions for scientific payloads or optical functions. Indeed, piezoelectric actuators are generally deemed of being good candidates for driving and control compact mechanisms. They offer advantages like: · fine precision, · low power consumption, · fast time response, · and easier implementation. For the application of these new components, an adapted electronic must be used to obtain the command of the actuators. The use of an unsuited driver can ruin the accuracy of the mechanism. To comply with the space applications needs, the “FB-LA75 SPACE” has to comply with many requirements besides the functional ones: space environment in terms of vibration, radiation and thermal vacuum, but also in terms of quality of design and reliability. After a brief recall about the original “Amplified Piezo Actuators” family and the qualified actuators designed by Cedrat Technologies, a high accuracy driving electronic development is proposed in order to obtain the full characteristics of the mechanism. The study and the accuracy budget are also described: phase stability, thermal stability, noise budget. The paper will conclude with: · a discussion of these new performances, · estimated capabilities for the future, · application perspectives.

	Development of a brushless DC motor sensorless control technique for high-altitude solar-electric airplanes propulsion drives By R. Bojoi; F. Farina; G. Griva; F. Profumo; A. Tenconi	[View] [Download]
Abstract: In the paper a sensorless control solution for Brushless DC motors is proposed for a High-Altitude Solar-Electric Airplane Propulsion Drive. The proposed technique is able to bring the motor from stand-still to the maximum speed by using back EMFs estimation to obtain the rotor position and speed. The complete drive system has been simulated, showing its robustness to detuned parameter conditions over the whole required speed range.