Polyphase drive systems configuration aiming EMI mitigation

Topologies of motor drive systems are studied, aiming the reduction of common-mode (CM) currents. Initially, the aspects concerning the CM currents circulation are analysed. The reason of common-mode voltages generation, the circulating paths for the resulting CM currents and their effects are discussed. Then, a non-conventional drive system configuration is proposed in order to reduce the CM currents and their effects. This configuration comprehends a non-conventional inverter module wired to a motor with an unusual connection. The cables arrangement differs from the standard solution, too. The proposed topology is compared with other ones, like the active circuit for common-mode voltages compensation. The contribution of the configuration to the reduction of CM voltages and currents and their related interferences are evaluated, based on numerical simulations. Some results are presented and discussed regarding the suitability of the proposed configuration as a potential solution to reduce the CM currents effects, when the state of art and implementation cost of drives are taken into account.

Solemne acto de investidura de doctores : 26 enero 2008

Apertura de acto Dr. D, José Regidor García; Lectura de la memoria de investigación del curso 2006-2007; D. José Joaquín Hernández Brito; Conferencia Dr. D. Francisco José Marcellán Español; Reconocimiento al Dr. Antonio J. Fernández Rodríguez por su trayectoria universitaria.

Morbimortalidad en recién nacidos con edad gestacional igual o inferior a 26 semanas: estudio de los límites de viabilidad en nuestro medio

Centro de Ciencias de la Salud. Hospital Universitario Materno Infantil de Canarias, Servicio de Neonatología, Servicio de Ginecología y Obstetricia. Programa de doctorado: Avances en pediatría.