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Permanent Magnet Linear Motors (PMLMs) are widely applied in xy-positioning stages such as laser cutters, pick & place systems or vision inspection devices [1].
Offshore wind farms are gaining more attention in the development of new renewable energy sources at the expense of onshore wind farms. The higher energy yield of an offshore wind farm is the main advantage [1]. The reliability and efficiency of the wind turbine is of great significance as the capital costs for installation and maintenance as well as the repair time are increased over onshore wind...
Magnets in free space can be modeled using the surface charge model [1]. This model assumes that a magnet can be represented as a layer of positive charges on the top surface of the magnet and a layer of negative charges on the bottom of the magnet. In case of cuboidal magnets this results in analytical field and force [2], [3] equations.
Magnetic field in permanent magnet (PM) synchronous machines is usually analyzed using harmonic modeling (HM) approach [1]. It is a fast and precise tool and therefore is widely used. This modeling technique imposes sources of the magnetic field expressed in terms of current density and magnetization of hard magnetic materials, while the current density corresponds to the armature current. However,...
Flux-switching machines are attracting interest among researchers over the last decade due to the increased importance of energy efficient systems. Among this class of machines, the rotary flux-switching PM machines (FSPM) with high power density are mostly analyzed by magnetic equivalent circuit (MEC) and finite element methods (FEM). In addition to those analysis techniques, this paper introduces...
This paper describes the effects of changing the magnet shape of permanent magnets (PMs) in a Halbach array applied in a slotless tubular actuator. More specifically, the square shaped magnets are replaced by trapezoidal shaped magnets. A semi-analytical magnetic field solution of regular square shaped magnets is presented and used to approximate the airgap field produced by the trapezoidal shaped...
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