This paper presents the design and an analysis of a surface PM vernier generator (SPMVG) for MW-scale direct-drive (DD) wind turbine application. An SPMVG has advantage higher torque density; however, especially at power ratings with increased electrical loadings, factor worsens there are some serious concerns including magnetic saturation cores demagnetization. These issues directly related to...

This paper presents a comprehensive study on the fractional slot concentrated winding (FSCW) interior permanent magnet synchronous motors (IPMSMs) with different pole combination for application of electric vehicle (EV) and hybrid (HEV). Three same dimension constraint rated parameters are designed optimized. With optimized motors, factors magnetomotive force (MMF), inductances, torque capacity...

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...

A superconducting slot antenna combined with a bandpass filter composed of coplanar waveguide meanderline resonators has been designed and tested. Based on a new design theory for broadband impedance matching circuits, we designed a slot antenna with a small radiation resistance of 1 X impedance matched to a three-pole Chebyshev bandpass filter with 10 GHz center frequency and 0.35% fractional ...

Maxwell pressure is the cause of stator deflection at the origin of acoustic noise radiated by stator. That is why precise determination of air-gap radial flux density Bg is of prime importance. It could be obtained by finite element method, semi numerical or totally analytic method with computation of magneto motive force and permeance. Slot number, pole pair number and PWM affecting acoustic ...

The early inter-turn short-circuit fault of field winding (ISFF) occurs between adjacent strands in a single rotor slot, which is significant safety hazard the transient operation large-capacity synchronous condenser. To realize high-precision detection ISFF, this paper proposes characteristics analysis method ISFF with strand as minimum unit. This combines novel stator asymmetric branch connec...