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Full-bridge half-controlled rectifier (FHR) of a 4-phase wound-field doubly salient generator (WFDSG) equipped with serial compensation capacitors (SCC) is researched in this paper. FHR can help to improve the power density of a WFDSG to a certain extent, however it augments the voltage regulation factor. To further enhance the power density and optimize external characteristic of the generating system,...
A 4-phase wound-field doubly salient generator is researched in this paper. The no-load situation is analyzed ideally and simulated by finite element method. The average inductance of the phase winding, which reaches over 50mH, causes low power factor and decreases the output power. To improve the output power, the capacitors are introduced to compensate the inductive current. For the no-load situation,...
This paper summarizes the basis structure and fundamental theory of doubly salient electro-magnetic motor (DSEM). A 12/8-pole prototype was built for exemplification. Advanced angle control mode (AACM) was adopted at medium and high speeds to increase the motor output torque. Moreover, finite element analysis of this motor is carried out to investigate the armature current and torque ripple at different...
This paper proposes a novel doubly salient machine. The topology of the machine is described. The flux within the air gap of the novel doubly salient machine is excited by both permanent magnets and field coils. The current of the field coils can be regulated to strengthen or weaken the flux level in the air gap. Therefore, the output voltage of the machine can be controlled easily. The method of...
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