EPE Association: EPE 2005 - Topic 14-5d - DS: Variable speed generators

EPE 2005 - Topic 14-5d - DS: Variable speed generators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 14: POWER ELECTRONICS IN ELECTRICAL ENERGY GENERATING SYSTEMS > EPE 2005 - Topic 14-5d - DS: Variable speed generators

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   Demonstration of wearable power generator
By DUFFY Maeve; CARROLL Damien [View]
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Abstract: As wearable electronics becomes more and more a common part of everyday life, the window for portable generators to power these devices increases. Batteries are alone the main source of power, but they have their limitations. The design of an electromagnetic generator that can be integrated within shoe soles is described. In this way, parasitic energy expended by a person when walking can be tapped and used to power portable electronic equipment. Designs are based on discrete permanent magnets and copper wire coils. The overall system of induced generator AC voltage, DC conversion and proposed applications is described.

   EXCITATION CONTROL OF A SYNCHRONOUS GENERATOR USING FUZZY LOGIC STABILIZING CONTROLLER
By ERCEG Gorislav; IDZOTIC Tomislav; SUMINA Damir [View]
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Abstract: This article is focused on the implementation of simple fuzzy logic excitation control of a synchronous generator. A simple fuzzy logic control scheme for voltage control and generator stabilization is tested on the real laboratory model that includes digital system for excitation control (based on four DSPs) and synchronous generator connected to an AC system through transformer and two parallel transmission lines. The behaviour of the excitation system with fuzzy logic stabilizing controller is compared with excitation system based on the PI voltage controller and conventional power system stabilizer.

   Integrated Inverter/Induction Machine Design Based on Operating Conditions for Electrical Generation
By CARVALHO Adriano; SOARES Orlando; GONCALVES Henrique; ARAUJO Armando [View]
[Download]

Abstract: New applications, like electrical power generation, present new challenges in designing induction machines due to specific operation conditions. Wind generation demands the machine for operating doubly fed, requiring an electrical installation based on long cable lengths connecting the converter to the generator. What results in rotor and stator circuits operate under high voltage with high gradients and damped high frequencies which further stresses the motor insulation. To satisfy these application demands well-defined nonstandard machines are required. A component approach does not allow an optimal solution. The success is a function of the collective understanding of the various elements concerning specification, design, application, and integration of the system. The proposed methodology gives a fundamental contribution to the effective inverter/machine high performance and low cost package design based on operating conditions of the inverter drive and alternative machine design, describing the system as a whole.

EPE 2005 - Topic 14-5d - DS: Variable speed generators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 14: POWER ELECTRONICS IN ELECTRICAL ENERGY GENERATING SYSTEMS > EPE 2005 - Topic 14-5d - DS: Variable speed generators
	[return to parent folder]

	Demonstration of wearable power generator By DUFFY Maeve; CARROLL Damien	[View] [Download]
Abstract: As wearable electronics becomes more and more a common part of everyday life, the window for portable generators to power these devices increases. Batteries are alone the main source of power, but they have their limitations. The design of an electromagnetic generator that can be integrated within shoe soles is described. In this way, parasitic energy expended by a person when walking can be tapped and used to power portable electronic equipment. Designs are based on discrete permanent magnets and copper wire coils. The overall system of induced generator AC voltage, DC conversion and proposed applications is described.

	EXCITATION CONTROL OF A SYNCHRONOUS GENERATOR USING FUZZY LOGIC STABILIZING CONTROLLER By ERCEG Gorislav; IDZOTIC Tomislav; SUMINA Damir	[View] [Download]
Abstract: This article is focused on the implementation of simple fuzzy logic excitation control of a synchronous generator. A simple fuzzy logic control scheme for voltage control and generator stabilization is tested on the real laboratory model that includes digital system for excitation control (based on four DSPs) and synchronous generator connected to an AC system through transformer and two parallel transmission lines. The behaviour of the excitation system with fuzzy logic stabilizing controller is compared with excitation system based on the PI voltage controller and conventional power system stabilizer.

	Integrated Inverter/Induction Machine Design Based on Operating Conditions for Electrical Generation By CARVALHO Adriano; SOARES Orlando; GONCALVES Henrique; ARAUJO Armando	[View] [Download]
Abstract: New applications, like electrical power generation, present new challenges in designing induction machines due to specific operation conditions. Wind generation demands the machine for operating doubly fed, requiring an electrical installation based on long cable lengths connecting the converter to the generator. What results in rotor and stator circuits operate under high voltage with high gradients and damped high frequencies which further stresses the motor insulation. To satisfy these application demands well-defined nonstandard machines are required. A component approach does not allow an optimal solution. The success is a function of the collective understanding of the various elements concerning specification, design, application, and integration of the system. The proposed methodology gives a fundamental contribution to the effective inverter/machine high performance and low cost package design based on operating conditions of the inverter drive and alternative machine design, describing the system as a whole.