A Novel Dual-Stator Hybrid Excited Synchronous Wind Generator

This paper presents a novel dual-stator hybrid excited synchronous wind generator (DSHESG). The structure characteristics are presented and no-load magnetic field is computed by 3-D finite element method. Static characteristics including magnetic flux density, EMF, inductances are analyzed. A closed-loop control system for field windings using PWM method is built on the basis of mathematical model of DSHESG. Thanks to the field windings the air-gap magnetic flux can be easily controlled, and the output voltage of DSHESG can be kept at a constant value with the speed or load varying. The dual-stator machine can increase output voltage effectively as well. Tests are performed on the prototype machines to validate analysis results, and an excellent agreement is obtained.