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 EPE-PEMC 2004 - Topic 07-4: Energy efficient drives 
 You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 07: MOTION CONTROL, ROBOTICS AND ADJUSTABLE SPEED DRIVES > EPE-PEMC 2004 - Topic 07-4: Energy efficient drives 
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   Energy Saving Control Of Induction Motor Driven By PWM IGBT AC Chopper Based On Instantaneous Power Theory (IPT) 
 By Bilal Saracoglu, Murat Kale, Engin Ozdemir 
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Abstract: This paper presents a new technique for the energy saving control of three-phase induction motor fed by voltage controller based on the concept of instantaneous power theory. The realization technique that optimizes the flux level to improve the efficiency and power-factor of the induction motor is discussed. This technique, called instantaneous power control (IPC), allows decoupled control of real and imaginary instantaneous powers and also their components in the motor. It contains very easy and short mathematical operations to calculate power components, power-factor and has a basic control algorithm. In this study; control algorithm of proposed method, circuit diagram and mathematical dynamic model of the motor that includes iron losses, experimental and simulation results are presented.

 
   Improving Of The Energy Efficiency Of AC Motor Electrical Drives 
 By A. A. Khashimov, A. U. Mirisaev, M. F. Shamiyev 
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Abstract: In this article we tried to solve a problem to improve of energy efficiency for ac drive system on the base of induction motors widespread in industry and agricultural sector. The physical base principles of energy saving mode, the structure of energy saving system, experimental data has given.

 
   Input Power Factor Corrected Switched Reluctance Motor Based Variable Speed Drive System 
 By A. M. Al-Kandari, T. H. Abdelhamid 
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Abstract: This paper presents input PFC of SRM based variable speed drive system. The four-phase SRM is fed from a singleswitch per phase converter topology with an energy recovery storage capacitor. Input PFC is achieved by a single-switch boost converter which is ideal for appliance drives within the power levels of 1kW and mostly operates from a single-phase utility input. The proposed converter exhibits some advantages like; single-switch per phase, common return point of phase switches, snubberless operation, and four-quadrant operation simply by changing phase firing sequence and position. A PWM controller is used to generate the switching signals of the appropriate phases according to the rotor position information. A position sensing encoder is used to provide information to an EPROM that is programmed to decide the firing sequence and generates the appropriate firing signals. The principle of operation is presented and the different modes of operation are illustrated. Analytical derivations are carried out for each identified mode of operation. Simulation and experimental results have been provided to verify theoretical results.

 
   The Asynchronous Electric Drive With Frontal Part Winding 
 By Viesturs Brazis, Alexander Gasparian, Janis Greivulis 
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Abstract: There is made the asynchronous drive with frontal part extension windings, which consists of current controlled sources at motor phases, rectifier and net inverter. The article shows the induction motor equivalent circuit calculation. There are taken the experimental results of transient process characterising values.