EPE Association: EPE 2005 - Topic 10-1 - LS: Adjustable speed drive systems

EPE 2005 - Topic 10-1 - LS: Adjustable speed drive systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 10: ADJUSTABLE SPEED DRIVES > EPE 2005 - Topic 10-1 - LS: Adjustable speed drive systems

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   Influence of Power Electronics on Design of Switched Reluctance Machines
By WICHERT Torsten; KUss Hans [View]
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Abstract: An adjustable speed drive using a doubly salient Switched Reluctance Machine (SRM), because of its ability to operate efficiently from unidirectional winding currents, enables the number of main switching devices in the inverter to be halved, yielding a very economical brushless drive. In general, the SRM is a robust, reliable and almost maintenance free electric drive. The high level performance expected from an adjustable speed drive is not easy to meet, as it is required to accommodate a large number of system nonlinearities in the case of a SRM. Approaches using machine construction aspects making influence on the machine performance becoming more equivalently to efforts at torque control. In this context modern design methods - analytical design by a self-prepared design program and simulation of the whole drive system - are presented which allow the examination of essential machine parameters in advance. Target is to find optimal construction parameters of the machine by investigation of single appearances like saturation effects which considerable influence the inverter voltampere requirement. The calculation results show that the SRM can be an attractive alternative to a.c. and d.c. variable speed drives under the condition that the entire drive system is optimally designed and coordinated.

   Multi-Machine modeling of two series connected 5-phase synchronous machines: effect of harmonics on control.
By SEMAIL Eric; LEVI Emil; BOUSCAYROL Alain; KESTELYN Xavier [View]
[Download]

Abstract: This paper deals with the series connection of two 5-phase synchronous machines supplied by a single 5-leg voltage source inverter. Using a specific modelling tool, design constraints on both machines are defined in order to control them independently. The effects of harmonics of back-electromotive force are then examined and improved control is deduced.

   Reduction of vibrations in an induction machine supplied by high power PWM inverter
By SIALA Sami; LELEU Emmanuel; MIRAOUI Abdellatif; ESPANET Christophe [View]
[Download]

Abstract: This paper describes a study concerning the reduction of the vibrations of an induction machine,supplied by a high power PWM inverter. First, we introduce the vibration sources in electricalmachines. Then we present two methods to modelize the vibrations, specially in consideration with thecurrent and voltage supply. The noise and vibrations measurements, realized on marine electricalpropulsion induction machine, show several interactions between vibrations and power supplywaveforms. This point explain that some PWM supply configurations are optimum considering avibration level criterion. We conclude by presenting an optimal PWM strategy, and clarifying the maindrive vibration sources.

EPE 2005 - Topic 10-1 - LS: Adjustable speed drive systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 10: ADJUSTABLE SPEED DRIVES > EPE 2005 - Topic 10-1 - LS: Adjustable speed drive systems
	[return to parent folder]

	Influence of Power Electronics on Design of Switched Reluctance Machines By WICHERT Torsten; KUss Hans	[View] [Download]
Abstract: An adjustable speed drive using a doubly salient Switched Reluctance Machine (SRM), because of its ability to operate efficiently from unidirectional winding currents, enables the number of main switching devices in the inverter to be halved, yielding a very economical brushless drive. In general, the SRM is a robust, reliable and almost maintenance free electric drive. The high level performance expected from an adjustable speed drive is not easy to meet, as it is required to accommodate a large number of system nonlinearities in the case of a SRM. Approaches using machine construction aspects making influence on the machine performance becoming more equivalently to efforts at torque control. In this context modern design methods - analytical design by a self-prepared design program and simulation of the whole drive system - are presented which allow the examination of essential machine parameters in advance. Target is to find optimal construction parameters of the machine by investigation of single appearances like saturation effects which considerable influence the inverter voltampere requirement. The calculation results show that the SRM can be an attractive alternative to a.c. and d.c. variable speed drives under the condition that the entire drive system is optimally designed and coordinated.

	Multi-Machine modeling of two series connected 5-phase synchronous machines: effect of harmonics on control. By SEMAIL Eric; LEVI Emil; BOUSCAYROL Alain; KESTELYN Xavier	[View] [Download]
Abstract: This paper deals with the series connection of two 5-phase synchronous machines supplied by a single 5-leg voltage source inverter. Using a specific modelling tool, design constraints on both machines are defined in order to control them independently. The effects of harmonics of back-electromotive force are then examined and improved control is deduced.

	Reduction of vibrations in an induction machine supplied by high power PWM inverter By SIALA Sami; LELEU Emmanuel; MIRAOUI Abdellatif; ESPANET Christophe	[View] [Download]
Abstract: This paper describes a study concerning the reduction of the vibrations of an induction machine,supplied by a high power PWM inverter. First, we introduce the vibration sources in electricalmachines. Then we present two methods to modelize the vibrations, specially in consideration with thecurrent and voltage supply. The noise and vibrations measurements, realized on marine electricalpropulsion induction machine, show several interactions between vibrations and power supplywaveforms. This point explain that some PWM supply configurations are optimum considering avibration level criterion. We conclude by presenting an optimal PWM strategy, and clarifying the maindrive vibration sources.