The structural parameters of an equal amplitude modulated magnetic pole is limited by the length air-gap. When modulation ratio or carrier small, spacing permanent magnets too large, which will lead to a worse cogging effect, and then torque optimization effect not satisfying. In order improve operation stability bearingless magnet synchronous motor (bearingless PMSM), unequal structure propose...

A modified genetic algorithm is proposed for optimization of low-dimensional systems of mathematical models described by partial differential equations. The paper explains its principle, benefits and illustrates its utilization for the simple size optimization of the plunger of a bearingless electromagnetic actuator, whose goal is to maximize the force acting on the plunger during its operation...

Bearingless permanent magnet synchronous motors (BPMSMs), with all advantages of permanent magnet motors (PMSMs) and magnetic bearings, have become an important research direction in the bearingless motor field. To realize a stable suspension for the BPMSM, accurate decoupling control between the electromagnetic torque and radial suspension force is indispensable. In this paper, a concise and r...

Abstract Bearingless motorized spindle is a kind of structure that combines bearingless motor with spindle. It has the advantages and motor, which can further improve speed machine tool However, its complex electromechanical coupling relationship between subsystems make it difficult to control operation process accurately. In this paper, voltage decoupling method used decouple torque suspension...