http://hdl.handle.net/2117/3279 2013-05-20T15:23:32Z http://hdl.handle.net/2117/17051 Title: Minimization of torque ripple in switched reluctance motor drives using direct instantaneous torque control Authors: Castro Soriano, Javier; Andrada Gascón, Pedro; Blanqué Molina, Balduino Abstract: Torque ripple is an inherent characteristic of switched reluctance motor drives due to its double salient geometry and it is a serious drawback in applications that require smooth torque and high dynamic performances. This paper presents some contributions to the minimization of torque ripple in SRM using direct instantaneous torque control (DITC). Direct torque controller is simulated using Matlab/Simulink and then implemented in a DSPACE ACE kit 1006 CLP that includes a processor board with an AMD OpteronTM running at 2.6 GHz. Finally, experimental results are shown and they are compared with those obtained using conventional angle control. 2012-11-29T12:55:05Z http://hdl.handle.net/2117/17022 Title: New hybrid reluctance motor drive Authors: Andrada Gascón, Pedro; Blanqué Molina, Balduino; Martínez Piera, Eusebio; Torrent Burgués, Marcel Abstract: In this paper a new type of hybrid reluctance motor drive is presented. This new motor is characterized by a stator formed by the combination of independent magnetic structures composed of an electromagnet, the magnetic core with one or several coils wound on it, associated with a permanent magnet disposed between their poles. The rotor has the same configuration of a switched reluctance motor without coils, without magnets and without squirrel cages. A particular case of this hybrid reluctance motor is studied in which the stator consists of three electromagnets with permanent magnets, constituting each one of them one phase of the motor, and the rotor is formed by five salient poles. Then an analysis and simulation of the motor is carried out. Finally, experimental results and a comparison of this type of motor drive with respect switched reluctance motor drives of the same size are shown. 2012-11-26T15:39:49Z http://hdl.handle.net/2117/17006 Title: Minimization of torque ripple in switched reluctance motor drives using an enhanced direct instantaneous control Authors: Castro Soriano, Javier; Andrada Gascón, Pedro; Blanqué Molina, Balduino Abstract: Torque ripple is an inherent characteristic of switched reluctance motor drives due to its double salient geometry and it is a serious drawback in applications that require smooth torque and high dynamic performances. This paper presents new contributions to the minimization of torque ripple in SRM using an enhanced direct instantaneous torque control. Torque ripple is reduced by adding a PI controller before the instantaneous torque controller and a change in the commutation zones. The PI direct instantaneous torque controller (PI+DITC) is simulated using Matlab/Simulink and then implemented in a DSPACE ACE kit 1006 CLP. Finally, experimental results are shown and they are compared with those obtained using conventional direct instantaneous torque control. 2012-11-23T09:29:06Z http://hdl.handle.net/2117/15567 Title: Experimental determination of magnetic characteristics of electrical machines Authors: Andrada Gascón, Pedro; Martínez Piera, Eusebio; Perat Benavides, Josep Ignasi; Sánchez López, José Antonio; Torrent Burgués, Marcel Abstract: A test equipment for determination of magnetic characteristics of different kinds of electrical machines is presented. Experimental determination of magnetic characteristics of electrical machines should be understood, according to the machine studied, as determination of their corresponding inductances or as determination of their magnetization curves (flux-linkage versus current for different rotor positions). The test equipment is based on a method of measurement of inductance by means of D.C. current, proposed by C.V. Jones, in which a bridge arrangement is used in order to eliminate the resistance effects. This equipment is able to obtain armature inductance in DCM (direct current motor), d-axis and q-axis inductance in SPSM (salient-pole synchronous machine) or SYNCREL (synchronous reluctance motor) and magnetization curves of SRM with a good accuracy and in an automatic way. The main advantage of this setup is that it is an automatic system controlled by PC, that allows magnetic characteristics of almost any electrical machine to be obtained, reducing measurement time and manual errors and providing easy and user friendly presentation of the test results. Several examples of experimental determination of magnetic characteristics using the proposed equipment are shown proving their test capabilities. 2012-03-14T11:46:26Z http://hdl.handle.net/2117/13609 Title: Simulation of linear Switched Reluctance Motor drives Authors: Garcia Amoros, Jordi; Blanqué Molina, Balduino; Andrada Gascón, Pedro Abstract: This paper presents a simulation model of linear switched reluctance motor drives. A Matlab-Simulink environment coupled with finite element analysis is used to perform the simulations. Experimental and simulation results for a double sided linear switched motor drive prototype are reported and compared to verify the simulation model. 2011-10-21T10:02:36Z http://hdl.handle.net/2117/11194 Title: An analytical approach to the thermal design of a doubled sided linear switched reluctance motor Authors: Garcia Amoros, Jordi; Andrada Gascón, Pedro; Blanqué Molina, Balduino Abstract: The purpose of this paper is to provide an analytical approach to the thermal behavior of a longitudinal flux flat linear switched reluctance motor (LSRM) suitable for the early stages of motor design. The approach uses a thermal model based on lumped parameters and adapted to the particularities of LSRMs. The thermal network is solved using the widely recognized Matlab-Simulink software. The proposed analytical approach was verified by means of experimental measurements and thermographic analysis. 2011-01-25T12:13:35Z http://hdl.handle.net/2117/9756 Title: Magnetic circuit znalysis of a linear switched reluctance motor Authors: Amoros, J.G.; Andrada Gascón, Pedro Abstract: In this paper a magnetic circuit analysis has been developed to obtain flux linkage/current characteristics in aligned and unaligned positions for a Linear Switched Reluctance Motor. The model is based on lumped parameters and it takes into account the leakage pole flux and the end effects. The lumped parameter magnetic analysis proposed can be a useful tool for designing Linear Switched Reluctance Machines. The procedure has been verified using two dimensional finite element analysis and experimental measurements. 2010-10-18T09:18:33Z http://hdl.handle.net/2117/9323 Title: Study of end effects on the performance of the linear switched reluctance motor Authors: Amoros, J.G.; Andrada Gascón, Pedro Abstract: The purpose of this paper is to study the end effects in a double-sided linear switched reluctance motor (LSRM). Switched reluctance motors (SRM) and by extension their linear counterpart, LSRM, have been widely studied using two-dimensional finite element analysis (2D FEA). End effects are not included in 2D FEA, even though these effects considerably increase unaligned inductance. This paper describes a procedure that takes into account the end effects in flux linkage, inductance and force profiles on LSRM. It is based on 2D FEA corrected by the inclusion of end-winding inductance and several empirical coefficients. The results of this approach closely coincide with experimental measurements. 2010-10-05T09:56:14Z http://hdl.handle.net/2117/8248 Title: Comparison of Environmental and Life Cycle Impact of a Switched Reluctance Motor Drive and Inverter-fed induction Motor Drives Authors: Andrada Gascón, Pedro; Blanqué Molina, Balduino; Martínez Piera, Eusebio; Perat Benavides, Josep Ignasi; Sánchez López, José Antonio; Torrent Burgués, Marcel Abstract: This paper compares the environmental and life cycle impact of one switched reluctance motor (SRM) drive and two inverter-fed induction motor (IM) drives. The study was carried out according to the Directive on the Ecodesign of Energy-Using Products (EuP 2005/32/EC) and following the Methodology for the Ecodesign of Energy-Using Products (MEEUP). The following base-case models were used: an IM (Eff3), an IM (Eff1) and an 8/6 SRM. All of these base-case models are rated at 1.5 kW of output power and are considered to be representative of the low-power range. The analysis shows that SRM drive has a lower environmental impact than the IM drives and offers a high savings potential, comparable to, or even greater than that of the IM (Eff1) in the use phase. 2010-07-19T12:24:29Z http://hdl.handle.net/2117/8246 Title: Switched Reluctance Motor Drive for 42V Electric Power Steering Authors: Andrada Gascón, Pedro; Blanqué Molina, Balduino; Martínez Piera, Eusebio; Perat Benavides, Josep Ignasi; Sánchez López, José Antonio; Torrent Burgués, Marcel Abstract: In this paper, switched reluctance motors (SRM) are proposed as an alternative for electric power assisted steering (EPAS) applications. The new 42 V power voltage system is a very attractive design for a steering electric motor, both from a cost and size perspective. A four-phase 8/6 SRM drive is designed for a rack type EPAS which should provide a maximum force of 10 kN. Two-dimension finite element analysis is used to validate the design. 2010-07-19T12:08:35Z http://hdl.handle.net/2117/8242 Title: Switched Reluctance Motor for Electric Power-Assited Steering Authors: Andrada Gascón, Pedro; Blanqué Molina, Balduino; Martínez Piera, Eusebio; Perat Benavides, Josep Ignasi; Sánchez López, José Antonio; Torrent Burgués, Marcel Abstract: In this paper, switched reluctance motors (SRM) are proposed as an alternative for electric power assisted steering (EPAS) applications. The new 42 V power voltage system is a very attractive design for a steering electric motor, both from a cost and size perspective. A four-phase 8/6 SRM drive is designed for a rack type EPAS which should provide a maximum force of 10 kN. Two-dimension finite element analysis is used to validate the design. 2010-07-19T11:43:13Z http://hdl.handle.net/2117/7787 Title: Torque ripple minimization for a Switched Reluctance Motor Authors: Blanqué Molina, Balduino; Dòria Cerezo, Arnau Abstract: This paper presents the desired current references in order to minimize the torque ripple for a Switched Reluctance Motor. From the torque equation, and using switch on and switch off angles, the desired current waveforms are obtained. Simulations validates the study and are compared with the constant current references case 2010-06-22T09:24:39Z