Offshore wind energy is an important part of clean energy, and the adoption to generate electricity will contribute implementation carbon peaking neutrality goals. The combination fractional frequency transmission system (FFTS) direct-drive turbine generator be beneficial development offshore power industry. use in FFTS electrical but it also lead increase volume weight generator, which unfavor...

Permanent magnet generators for renewable energy application have been subject of research during last two decades. Several kinds of rotating electrical generators exist for several applications, including synchronous, induction and DC machines. Doubly Fed Induction Generator is proposed as an alternative solution with respect to the cost of such a system. However, a bigger emphasis in the repo...

This paper presents a new method to optimize, from working cycle defined by torque and speed profiles, both the design control strategy of permanent magnet synchronous generators (PMSGs). The case 10 MW direct-drive generator for an Offshore wind turbine was chosen illustrate this method, which is based on d–q axis equivalent circuit model. It allows with reduced computation time, design, consi...

ermanent Magnet Brushless DC Motor (PMBLDC) is one of the best electrical drives that have increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. Due to the increasing demand for compact & reliable motors and the evolution of low cost power semiconductor switches and permanent magnet (PM) materials, brushless DC motors become popular in...

Both the cogging and electromagnetic torques depends on the shape of the flux density distribution in the airgap region. A two-dimensional (2-D) analytical method for predicting the open- circuit airgap field distribution in brushless permanent magnet motors, considering the direction of magnetization, i.e., radial or parallel, and the effect of real shape of stator slot-openings is presented i...

this paper presents a novel salient pole synchronous generator i.e. permanentmagnet-assisted salient-pole synchronous generator (pma-sgs). due to saturationof conventional synchronous generators (sgs), permanent-magnet-assisted salientpolesynchronous generators (pma-sgs) are presented. pma-sgs are a new type ofsalient-pole synchronous machines with extra permanent magnets (pms) betweenthe adjac...

This article presents a vibration diagnostic method designed for Permanent Magnets (PM) electrical machines–traction motors and generators. Those machines are commonly used in traction drives of electrical vehicles and small wind or water systems. The described method is very innovative and unique. Specific structural properties of machines excited by permanent magnets are used in this method e...

Permanent Magnet Synchronous Motor (PMSM) variable-speed drive is widely used in the industry because of its particularly high mechanical power density, simplicity and cost effectiveness. Eliminating the mechanical sensor mounted on the shaft of the motors gives further improvement. These drives are referred to as “sensorless” electrical drives. In this paper a novel sensorless algorithm is pro...

Abstract Wind power turbines have increasingly attracted attention as a renewable energy source. Gearboxes in wind reduce their efficiency, require periodic maintenance, and result gearbox failure. Consequently, direct-driven generators with high torque density emerged an alternative because they transmit the of turbine directly. Permanent-magnet vernier machines (PMVMs) possess simple robust s...