Influence of the Electrical Steel Grade on the Performance of the Direct-Drive and Single Stage Gearbox Permanent-Magnet Machine for Wind Energy Generation, Based on an Analytical Model

Conceptual Framework of Antecedents to Trends on Permanent Magnet Synchronous Generators for Wind Energy Conversion System

“…Damian Kowal, et al, (2011) analyzed an analytical model for PMSG, which has been validated by FEM and is proven for its efficacy over the analysis of the impact of the electrical steel grade used with respect to the annual efficacy. In terms of optimized generator's annual efficiency and optimal pole pair number (frequency), the material M235-35A is greater when compared with M800-65A.…”

“…A notable difference in the efficiency was observed between the two systems -Direct Drive PMSG Wind Turbine and Single Stage Planetary Behaviour PMSG Wind Turbine, which was due to the behaviour losses in a drive train of the latter. In spite of a lower efficiency, the latter could serve as an alternative model to the direct drive solution due to the considerable decrease in the generator's size [129].…”

Incorporation of Finite-Element Analysis Into Annual Energy Loss Estimation for Permanent-Magnet Wind Turbine Generators

“…Several examples can be noted, in which the losses at partial load have been considered and used in producing an estimate of, or at least similar to, the cost of energy [7]. Commonly, the iron loss information from a manufacturer of laminations is used, while multiplying by an enhancement factor to account for the variation between the loss measurement conditions and the expected application conditions [8], [9], [10], [11]. The effect of the variation of frequency is thereby captured, but the local variation in flux density due to armature currents is disregarded, as is the effect of the flux density vector rotating in some regions of the iron rather than just pulsating.…”

Incorporation of finite element analysis into annual energy loss estimation for permanent magnet wind turbine generators

“…Several examples can be noted, in which the losses at partial load have been considered and used in producing an estimate of, or at least similar to, the cost of energy [7]. Commonly, the iron loss information from a manufacturer of laminations is used, while multiplying by an enhancement factor to account for the variation between the loss measurement conditions and the expected application conditions [8], [9], [10], [11]. The effect of the variation of frequency is thereby captured, but the local variation in flux density due to armature currents is disregarded, as is the effect of the flux density vector rotating in some regions of the iron rather than just pulsating.…”