نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار دانشگاه صنعتی مالک اشتر
2 کارشناسی ارشد دانشگاه صنعتی مالک اشتر
چکیده
کلیدواژهها
عنوان مقاله [English]
Today, the permanent magnet motors are widely used in various industries especially military applications due
to such characteristics as high efficiency, low weight and high energy dens ity. Torque ripple is an inherent
characteristic of this type of motors. Time and space harmonics produced by the motor drive and the motor
structure itself give rise to torque ri pples in these motors. Geometric structure of the magnets and stator slots
lead to cogging torque (one of the ca uses of torque ripple) in these motors. This unwanted torque component
causes noise, vibration and motor starting issues. It also creates bubbles in the application of these motors as
the submarines' propulsion. It shoul d be noted that bubbles could lead to submarine detection which is
undesirable in military application. This paper provides analytical formulations and validation by three-
dimensional finite element analysis to redu ce this unwanted torque. This is an important step in achieving the
goals of the country's marine industries organization.
کلیدواژهها [English]