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The aim of this paper is to present a three-phase 6×4 switched reluctance generator load voltage control. The showed strategy uses a PI controller to vary the magnetization level of the phases during the magnetization period using a PWM signal. This strategy was simulated and than tested in a bench. Results of both simulations and experimental tests are presented here. It was used a low cost fixed-point...
This article present a switched reluctance motor/generator drive. The half-bridge electronic converter topology is used to attain motor operation mode. To change from motor operational mode to generation mode the electronic converter structure is strategically modified through a relay switch, allowing the flux of power go to the load. Simulation and experimental results obtained for a 6×4 switched...
The switched reluctance starter/generator has been concerned for its wide speed range, high efficiency and firm structure. In order to meet all kinds of equipments' request, the voltage performance generating by switched reluctance starter/generator needs to been advanced. The paper has designed the switched reluctance starter/generator system using internal model-PID control. And the simulation works...
This paper deals with the comparison of the modeling and performances of a 12/8 dual channel switched reluctance generator (DCSRG) including mutual coupling under different operation modes. Firstly, the flux patterns of DCSRG under different excitation modes are illustrated and compared. Then the dynamic models are described for DCSRG operating under single channel mode and dual channel mode in which...
When switched reluctance generator (SRG) is operating below its rated speed, the back electromotive force(EMF) may be lower than the excitation voltage, as a result, the phase current will decrease after turn-off angles and reduce the conversion efficiency of the system. To solve this problem, a power converter topology which can change generation voltage is present in this paper, and applied to wind...
This paper presents a simulation study on the performance of a four-phase 8/6 switched reluctance generator (SRG) for variable-speed applications using a non-linear model based on the magnetization curves which can be obtained from experimental data or calculated data using finite-element method. The generator performance, including output power, torque ripple and copper losses, is determined in terms...
This article treats the switched reluctance motor/generator drive for general purpose. A typical half-bridge converter topology is used to attain the motor operation mode. Although, the converter topology is strategically modified to make possible the generator operation mode. It is achieved automatically through a relay and so the phase demagnetization generates power to the load. Also the switching...
The output equation of the switched reluctance linear generator is educed. The turn numbers of per phase winding is also educed. The primary election of those structure parameters could be determined based on the output equation and the equation of the turn numbers of per phase winding. The proofing performance data could be based on the magnetic paths calculation of the Switched Reluctance linear...
The scheme of the developed Switched Reluctance linear generator system is presented, which is made up of the three-phase 6/4 structure simple side Switched Reluctance linear generator and the three-phase asymmetric bridge power converter. The structure of the Switched Reluctance linear generator is described with the side elevation and the sectional drawing. The three-phase asymmetric bridge power...
This paper describes aspects of the power electronics control of wave energy conversion. The objective of the power converter is to drive a switched reluctance linear machine which works as direct-drive power take off (DDPTO) system for a point absorber. FEM analysis and simulations of the electrical machine were taken into account in the design of the converter control strategy. Finally, laboratory...
The switched reluctance motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper introduces a new configuration for a two phase unidirectional switched reluctance motor/field assisted generator. The proposed novel motor/generator consists of two magnetically independent stator and rotor sets (layers), where...
The exigencies created by the shortage of energy supplies and the ever-growing air pollution stress the need for an alternative solution to the on-board power generation. The purpose of this paper is to develop a novel switched reluctance wind power generator (SRWPG) system for electric vehicles (EVs), which can convert the wind power into electric power so as to charge a battery or support other...
Using of the wind energy has become increasingly important as a renewable energy source and therefore is an increasing interest in exploiting it using a switched reluctance machine as a generator and optimize its characteristics in this domain. This work analyzes the generator mode of the switched reluctance machine in the direct coupling to the turbine shaft and coupled to the shaft through a gearbox.
The paper presents a developed switched reluctance wind power generator system. The block diagram and the elements of the system, such as generator, rotor position detector, excitation power converter and controller are described. The transient phase current analysis and the energy analysis of the switched reluctance generator are evaluated. The rotor position and the peak value of the phase current...
The developed switched reluctance starter/generator system in low voltage is presented, which is made up of the three-phase 12/8 structure double salient reluctance machine, three-phase asymmetric bridge single polarity power converter and the controller. The three-phase 12/8 structure double salient reluctance machine, the three-phase asymmetric bridge single polarity power converter and the control...
This paper proposes an electronic controller using PWM technique for compensation of a highly reactive machine suitable for variable speed application. The generator is a flux-switching machine derived from an inductor alternator and the switched reluctance machine. Using an 8/4 configuration of this machine the electrical characteristics of this generator was determined from the open-circuit, short...
This paper deals with the optimal excitation angles of switched reluctance generator (SRG) in order to minimize the losses or to maximize the efficiency. The proposed SRG operates at relatively high speed in the single-pulse mode operation. In this regime, the turn-on and turn-off angles are the only control parameters that may be used to optimize the performance of the SRG. Previous work on the optimal...
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