EPE Association: EPE 1997 – 68: Dialogue Session DS5j: ENERGY EFFICIENT DRIVES

EPE 1997 – 68: Dialogue Session DS5j: ENERGY EFFICIENT DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 – 68: Dialogue Session DS5j: ENERGY EFFICIENT DRIVES

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   INDUCTION MOTOR DRIVES ENERGY OPTIMIZATION IN STEADY AND TRANSIENT STATES: A NEW APPROACH
By J.M. Moreno-Eguilaz; M. Cipolla; J. Peracaula [View]
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Abstract: A review of different optimum flux search algorithms for loss minimization in a vector-controlled induction motor drive is presented. A fuzzy logic controller, actuating as a supervisor, is proposed to work, with reduced flux levels, during transients, to optimize efficiency also in dynamic mode. Experimental results demonstrate the validity of the proposed methods.

   MODEL BASED ENERGY OPTIMISER FOR VECTOR CONTROLLED INDUCTION MOTOR DRIVES
By K. S. Rasmussen; P. Thogersen [View]
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Abstract: This paper describes a new method for energy optimisation of vector controlled induction motors. The scheme is based on a simple parametric loss-model for the motor. The energy optimiser is validated in steady state as well as for dynamical behavior respectively.

   ANALYSIS OF STABILITY IN LOW-COST ENERGY OPTIMAL CONTROLLED PWM-VSI FED INDUCTION MOTOR DRIVE
By Flemming Abrahamsen; Frede Blaabjerg; John K. Pedersen [View]
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Abstract: The stability aspect of induction motor drives with respect to energy optimisation has only been treated superficially in previously published papers. It may, however, be a problem and especially in slow response low-cost drives. In this paper, the stability is analyzed using a standard 2.2 kW squirrel-cage induction motor as a ease. Steady-state calculations show that problems with load disturbances arise by energy optimization at low speed and low load. It is suggested to run the motor with an air-gab flux slightly above the energy optimal flux level. An experimentally verified dynamic motor model is used to analyze stability with a sudden load change. It is shown that it does not matter whether the load change is slow or fast. This means the stability can always be analyzed with the steady-state model. It is also shown that oscillations are not a problem in small drives. Only in large drives, the series resonance in induction machines may cause problems. If the load is low, energy optimization can increase the series resonance damping and reduce the oscillation problem.

   COMPARISON OF TWO LOW-COST SMALL INDUCTION MOTOR DRIVE CONFIGURATIONS
By B.M. Gordon; R.A. McMahon [View]
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Abstract: This paper compares two low-cost induction motor drive configurations against a standard delta-connected inverter fed induction motor drive. Experimental results are presented detailing losses and drive efficiency when operating with different control strategies. Both topologies have great potential for use in cost-conscious applications, such as domestic appliances.

   APPLICATION OF THE INDUCTION MOTOR TOOLBOXES FOR THE DESIGN STRATEGY OF ENERGY SAVING DRIVERS FOR SUPPLYING COMMUTER TRAINS
By J.B. Klaassens; J.F. Dekkers; E.A. Lomonova; S.R. Miziurin; S.I. Volsky [View]
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Abstract: The purpose of this paper is to describe the theoretical and practical approach to the investigation and design of the universal block-oriented mathematical models of the energy efficient induction motor drive systems for the supplying commuter trains. The particular emphasis is given to the elaborated library in the form of the Simulink Toolboxes for the asynchronous motor drive systems. The mathematical models are based on the classic scalar and vector orientation schemes and control systems.

EPE 1997 – 68: Dialogue Session DS5j: ENERGY EFFICIENT DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 – 68: Dialogue Session DS5j: ENERGY EFFICIENT DRIVES
	[return to parent folder]

	INDUCTION MOTOR DRIVES ENERGY OPTIMIZATION IN STEADY AND TRANSIENT STATES: A NEW APPROACH By J.M. Moreno-Eguilaz; M. Cipolla; J. Peracaula	[View] [Download]
Abstract: A review of different optimum flux search algorithms for loss minimization in a vector-controlled induction motor drive is presented. A fuzzy logic controller, actuating as a supervisor, is proposed to work, with reduced flux levels, during transients, to optimize efficiency also in dynamic mode. Experimental results demonstrate the validity of the proposed methods.

	MODEL BASED ENERGY OPTIMISER FOR VECTOR CONTROLLED INDUCTION MOTOR DRIVES By K. S. Rasmussen; P. Thogersen	[View] [Download]
Abstract: This paper describes a new method for energy optimisation of vector controlled induction motors. The scheme is based on a simple parametric loss-model for the motor. The energy optimiser is validated in steady state as well as for dynamical behavior respectively.

	ANALYSIS OF STABILITY IN LOW-COST ENERGY OPTIMAL CONTROLLED PWM-VSI FED INDUCTION MOTOR DRIVE By Flemming Abrahamsen; Frede Blaabjerg; John K. Pedersen	[View] [Download]
Abstract: The stability aspect of induction motor drives with respect to energy optimisation has only been treated superficially in previously published papers. It may, however, be a problem and especially in slow response low-cost drives. In this paper, the stability is analyzed using a standard 2.2 kW squirrel-cage induction motor as a ease. Steady-state calculations show that problems with load disturbances arise by energy optimization at low speed and low load. It is suggested to run the motor with an air-gab flux slightly above the energy optimal flux level. An experimentally verified dynamic motor model is used to analyze stability with a sudden load change. It is shown that it does not matter whether the load change is slow or fast. This means the stability can always be analyzed with the steady-state model. It is also shown that oscillations are not a problem in small drives. Only in large drives, the series resonance in induction machines may cause problems. If the load is low, energy optimization can increase the series resonance damping and reduce the oscillation problem.

	COMPARISON OF TWO LOW-COST SMALL INDUCTION MOTOR DRIVE CONFIGURATIONS By B.M. Gordon; R.A. McMahon	[View] [Download]
Abstract: This paper compares two low-cost induction motor drive configurations against a standard delta-connected inverter fed induction motor drive. Experimental results are presented detailing losses and drive efficiency when operating with different control strategies. Both topologies have great potential for use in cost-conscious applications, such as domestic appliances.

	APPLICATION OF THE INDUCTION MOTOR TOOLBOXES FOR THE DESIGN STRATEGY OF ENERGY SAVING DRIVERS FOR SUPPLYING COMMUTER TRAINS By J.B. Klaassens; J.F. Dekkers; E.A. Lomonova; S.R. Miziurin; S.I. Volsky	[View] [Download]
Abstract: The purpose of this paper is to describe the theoretical and practical approach to the investigation and design of the universal block-oriented mathematical models of the energy efficient induction motor drive systems for the supplying commuter trains. The particular emphasis is given to the elaborated library in the form of the Simulink Toolboxes for the asynchronous motor drive systems. The mathematical models are based on the classic scalar and vector orientation schemes and control systems.