Linear Switched Reluctance Motors

This chapter deals with linear switched reluctance machines (LSRMs). Linear switched reluctance machines are the counterpart of the rotary switched reluctance machine (SRM), and now they have aroused great interest in the field of electrical machines and drives. In this chapter, first, a mathematical model is presented, and then a procedure for the design of this kind of machines is proposed. Next, a linear switched reluctance force actuator, based on the before designed procedure, is simulated. In addition, experimental proofs of the goodness of the design process and of the accuracy of the simulation of the linear switched reluctance force actuator are given

Influence of Manufacturing and Assembly Defects and the Quality of Materials on the Performance of an Axial-Flux Switched Reluctance Machine

This paper investigated the influence of manufacturing and assembly defects and the quality of materials on the performance of an axial-flux switched reluctance machine (AFSRM). An AFSRM drive was designed and built for the in-wheel propulsion of an electric scooter. The motor was tested according to the standard IEC 60349-Part 1, but the obtained results were below the expected result. The causes of the discrepancy between the simulated and experimental results were analyzed. After an exhaustive study, manufacturing and assembly deficiencies and the quality of materials were identified as the main causes of the mentioned discrepancies. Static torque was used to assess the impact of the different causes in these discrepancies. Finally, some recommendations are proposed to improve the construction of this kind of machine

Evolució dels plans d'estudi d'electricitat a l'Escola Universitària Politècnica de Vilanova i la Geltrú

Molt a prop de la celebració del centenari de l’Escola Universitària Politècnica de Vilanova i la Geltrú, originalment Escuela Superior de Industrias de Villanueva y Geltrú, els autors volen fer en aquesta comunicació una anàlisi crítica dels Plans d’Estudis d’Enginyeria Tècnica en Electricitat que hi ha hagut al llarg dels darrers cent anys. Considerant tant l’evolució dels seus objectius i aspectes organitzatius com la dels seus continguts

Accionamientos de Reluctancia Autoconmutados para Vehículos Eléctricos

En este artículo se presentan las especificaciones requeridas por el accionamiento de un vehículo eléctrico con unas prestaciones similares a las de un vehículo con motor de gasolina de 1600 y 1800 cm3. Se comparan las diferentes alternativas de accionamientos eléctricos, en base a criterios objetivos, quedando de manifiesto las ventajas de los accionamientos de reluctancia autoconmutados. Luego se plantea una guía básica de diseño para los accionamientos de reluctancia autoconmutados, proponiéndose, además, el dimensionamiento de un accionamiento de este tipo que verifique las especificaciones del caso en estudio. Por último se procede a la simulación del motor, utilizando elementos finitos, y del accionamiento completo, mediante Matlab-Simulink. Los resultados obtenidos por simulación confirman a los accionamientos de reluctancia autoconmutados como una de las mejores alternativas para el grupo tractor de los vehículos eléctricos

Design of a Novel Modular Axial-Flux Double Rotor Switched Reluctance Drive

Nowadays, there is a renewed interest in switched reluctance machines and especially in axial-flux switched reluctance machines (AFSRM). This paper presents a comprehensive design procedure for modular AFSRM with an inner stator and two exterior rotors that have a new distribution of the stator and rotor poles, resulting in short magnetic paths with no flux reversal. After a description of the proposed machine, the output torque equation is derived from a simplified non-linear energy conversion loop and guidelines for its design are given. Once the preliminary sizing has been carried out the different modules of the AFSRM, the magnetically active parts made with SMC, are reshaped or refined using 3D printing and 3D electromagnetic finite element analysis until they reach their definitive shape and dimensions. Finally, an AFSRM has been built following the proposed design procedure and has been validated by experimental measurements